/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 10:35:29,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 10:35:29,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 10:35:29,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 10:35:29,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 10:35:29,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 10:35:29,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 10:35:29,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 10:35:29,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 10:35:29,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 10:35:29,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 10:35:29,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 10:35:29,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 10:35:29,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 10:35:29,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 10:35:29,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 10:35:29,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 10:35:29,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 10:35:29,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 10:35:29,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 10:35:29,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 10:35:29,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 10:35:29,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 10:35:29,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 10:35:29,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 10:35:29,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 10:35:29,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 10:35:29,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 10:35:29,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 10:35:29,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 10:35:29,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 10:35:29,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 10:35:29,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 10:35:29,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 10:35:29,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 10:35:29,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 10:35:29,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 10:35:29,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 10:35:29,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 10:35:29,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 10:35:29,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 10:35:29,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 10:35:29,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 10:35:29,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 10:35:29,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 10:35:29,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 10:35:29,455 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 10:35:29,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 10:35:29,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 10:35:29,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 10:35:29,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 10:35:29,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 10:35:29,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 10:35:29,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 10:35:29,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 10:35:29,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 10:35:29,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 10:35:29,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 10:35:29,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 10:35:29,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 10:35:29,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 10:35:29,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 10:35:29,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 10:35:29,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 10:35:29,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 10:35:29,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 10:35:29,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 10:35:29,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 10:35:29,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 10:35:29,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 10:35:29,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 10:35:29,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 10:35:29,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 10:35:29,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 10:35:29,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 10:35:29,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 10:35:29,796 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 10:35:29,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-09 10:35:29,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca0eafc7/70eee725e9aa47dca140a0fd542ba093/FLAG40e9c4c52 [2020-10-09 10:35:30,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 10:35:30,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-09 10:35:30,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca0eafc7/70eee725e9aa47dca140a0fd542ba093/FLAG40e9c4c52 [2020-10-09 10:35:30,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca0eafc7/70eee725e9aa47dca140a0fd542ba093 [2020-10-09 10:35:30,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 10:35:30,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 10:35:30,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 10:35:30,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 10:35:30,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 10:35:30,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 10:35:30" (1/1) ... [2020-10-09 10:35:30,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9bb26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:30, skipping insertion in model container [2020-10-09 10:35:30,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 10:35:30" (1/1) ... [2020-10-09 10:35:30,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 10:35:30,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 10:35:31,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 10:35:31,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 10:35:31,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 10:35:31,297 INFO L208 MainTranslator]: Completed translation [2020-10-09 10:35:31,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31 WrapperNode [2020-10-09 10:35:31,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 10:35:31,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 10:35:31,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 10:35:31,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 10:35:31,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 10:35:31,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 10:35:31,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 10:35:31,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 10:35:31,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... [2020-10-09 10:35:31,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 10:35:31,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 10:35:31,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 10:35:31,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 10:35:31,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 10:35:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-09 10:35:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-09 10:35:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-09 10:35:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-09 10:35:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 10:35:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 10:35:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 10:35:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 10:35:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 10:35:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 10:35:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 10:35:31,467 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 10:35:31,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 10:35:31,908 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 10:35:31,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 10:35:31 BoogieIcfgContainer [2020-10-09 10:35:31,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 10:35:31,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 10:35:31,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 10:35:31,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 10:35:31,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 10:35:30" (1/3) ... [2020-10-09 10:35:31,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778afa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 10:35:31, skipping insertion in model container [2020-10-09 10:35:31,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:31" (2/3) ... [2020-10-09 10:35:31,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778afa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 10:35:31, skipping insertion in model container [2020-10-09 10:35:31,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 10:35:31" (3/3) ... [2020-10-09 10:35:31,920 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2020-10-09 10:35:31,932 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 10:35:31,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 10:35:31,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 10:35:31,941 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 10:35:31,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,967 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,967 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,967 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,968 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,968 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,968 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,968 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,969 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,969 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,971 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,971 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,972 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,972 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,976 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,984 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,984 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,984 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,985 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,985 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:31,985 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:32,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 10:35:32,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 10:35:32,021 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 10:35:32,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 10:35:32,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 10:35:32,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 10:35:32,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 10:35:32,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 10:35:32,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 10:35:32,034 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 10:35:32,036 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:32,039 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:32,041 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:32,076 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-09 10:35:32,077 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 10:35:32,082 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-09 10:35:32,084 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-09 10:35:33,323 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-09 10:35:33,444 INFO L132 LiptonReduction]: Checked pairs total: 1052 [2020-10-09 10:35:33,444 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-09 10:35:33,451 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-09 10:35:33,463 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-09 10:35:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-09 10:35:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-09 10:35:33,472 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:33,473 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-09 10:35:33,473 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:33,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1563716626, now seen corresponding path program 1 times [2020-10-09 10:35:33,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:33,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12596273] [2020-10-09 10:35:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:33,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12596273] [2020-10-09 10:35:33,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:33,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 10:35:33,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474362649] [2020-10-09 10:35:33,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 10:35:33,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 10:35:33,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 10:35:33,794 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-09 10:35:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:33,868 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-09 10:35:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 10:35:33,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-09 10:35:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:33,882 INFO L225 Difference]: With dead ends: 83 [2020-10-09 10:35:33,882 INFO L226 Difference]: Without dead ends: 54 [2020-10-09 10:35:33,884 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-09 10:35:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-09 10:35:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-09 10:35:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-09 10:35:33,923 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-09 10:35:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:33,924 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-09 10:35:33,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 10:35:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-09 10:35:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:33,925 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:33,925 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:33,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 10:35:33,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash 956938306, now seen corresponding path program 1 times [2020-10-09 10:35:33,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:33,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052217785] [2020-10-09 10:35:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052217785] [2020-10-09 10:35:34,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:34,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:34,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390878223] [2020-10-09 10:35:34,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:34,020 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-09 10:35:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,084 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-09 10:35:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:34,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,086 INFO L225 Difference]: With dead ends: 80 [2020-10-09 10:35:34,086 INFO L226 Difference]: Without dead ends: 75 [2020-10-09 10:35:34,087 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:34,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-09 10:35:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-09 10:35:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-09 10:35:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-09 10:35:34,097 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-09 10:35:34,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,099 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-09 10:35:34,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-09 10:35:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:34,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,100 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:34,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 10:35:34,101 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 507192011, now seen corresponding path program 1 times [2020-10-09 10:35:34,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:34,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020946837] [2020-10-09 10:35:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020946837] [2020-10-09 10:35:34,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:34,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:34,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082879280] [2020-10-09 10:35:34,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:34,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:34,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:34,195 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-09 10:35:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,228 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-09 10:35:34,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 10:35:34,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,230 INFO L225 Difference]: With dead ends: 73 [2020-10-09 10:35:34,230 INFO L226 Difference]: Without dead ends: 70 [2020-10-09 10:35:34,231 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-09 10:35:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-09 10:35:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-09 10:35:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-09 10:35:34,243 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-09 10:35:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,244 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-09 10:35:34,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-09 10:35:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:34,245 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,246 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:34,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 10:35:34,246 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:34,247 INFO L82 PathProgramCache]: Analyzing trace with hash 507214331, now seen corresponding path program 2 times [2020-10-09 10:35:34,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:34,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137419891] [2020-10-09 10:35:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137419891] [2020-10-09 10:35:34,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:34,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:34,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499865087] [2020-10-09 10:35:34,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:34,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:34,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:34,314 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-09 10:35:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,381 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-09 10:35:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:34,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,383 INFO L225 Difference]: With dead ends: 86 [2020-10-09 10:35:34,383 INFO L226 Difference]: Without dead ends: 80 [2020-10-09 10:35:34,384 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-09 10:35:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-09 10:35:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-09 10:35:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-09 10:35:34,393 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-09 10:35:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,394 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-09 10:35:34,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-09 10:35:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:34,395 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,395 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:34,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 10:35:34,396 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash -399661872, now seen corresponding path program 2 times [2020-10-09 10:35:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:34,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031747768] [2020-10-09 10:35:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031747768] [2020-10-09 10:35:34,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894418405] [2020-10-09 10:35:34,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:34,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:34,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:34,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:34,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:34,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:34,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-09 10:35:34,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327671103] [2020-10-09 10:35:34,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 10:35:34,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 10:35:34,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-09 10:35:34,698 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-09 10:35:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,783 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-09 10:35:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:34,784 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-09 10:35:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,785 INFO L225 Difference]: With dead ends: 101 [2020-10-09 10:35:34,785 INFO L226 Difference]: Without dead ends: 96 [2020-10-09 10:35:34,785 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-09 10:35:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-09 10:35:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-09 10:35:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-09 10:35:34,794 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-09 10:35:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,794 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-09 10:35:34,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 10:35:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-09 10:35:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:34,796 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,796 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:35,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:35,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1456916488, now seen corresponding path program 3 times [2020-10-09 10:35:35,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:35,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908409739] [2020-10-09 10:35:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908409739] [2020-10-09 10:35:35,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229760789] [2020-10-09 10:35:35,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:35,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:35,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:35,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:35,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713808774] [2020-10-09 10:35:35,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:35,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:35,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:35,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:35,218 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-09 10:35:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:35,254 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-09 10:35:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 10:35:35,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:35,256 INFO L225 Difference]: With dead ends: 84 [2020-10-09 10:35:35,256 INFO L226 Difference]: Without dead ends: 81 [2020-10-09 10:35:35,257 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-09 10:35:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-09 10:35:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-09 10:35:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-09 10:35:35,272 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-09 10:35:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:35,275 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-09 10:35:35,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-09 10:35:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:35,276 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:35,276 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:35,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,477 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:35,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1456224568, now seen corresponding path program 4 times [2020-10-09 10:35:35,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:35,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560084577] [2020-10-09 10:35:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560084577] [2020-10-09 10:35:35,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423822598] [2020-10-09 10:35:35,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:35,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:35,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:35,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:35,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:35,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955449752] [2020-10-09 10:35:35,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:35,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:35,679 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-09 10:35:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:35,740 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-09 10:35:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:35,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:35,742 INFO L225 Difference]: With dead ends: 90 [2020-10-09 10:35:35,742 INFO L226 Difference]: Without dead ends: 87 [2020-10-09 10:35:35,742 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-09 10:35:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-09 10:35:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-09 10:35:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-09 10:35:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-09 10:35:35,760 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-09 10:35:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:35,763 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-09 10:35:35,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-09 10:35:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:35,765 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:35,765 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:35,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,980 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1456202248, now seen corresponding path program 5 times [2020-10-09 10:35:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:35,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981517007] [2020-10-09 10:35:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981517007] [2020-10-09 10:35:36,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670200584] [2020-10-09 10:35:36,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:36,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:36,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:36,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:36,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:36,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:36,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:36,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420899961] [2020-10-09 10:35:36,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:36,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:36,160 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-09 10:35:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:36,284 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-09 10:35:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:36,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:36,285 INFO L225 Difference]: With dead ends: 99 [2020-10-09 10:35:36,285 INFO L226 Difference]: Without dead ends: 93 [2020-10-09 10:35:36,286 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-09 10:35:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-09 10:35:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-09 10:35:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-09 10:35:36,301 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-09 10:35:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:36,304 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-09 10:35:36,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-09 10:35:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:36,308 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:36,308 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:36,509 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash 483638869, now seen corresponding path program 1 times [2020-10-09 10:35:36,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190628502] [2020-10-09 10:35:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190628502] [2020-10-09 10:35:36,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:36,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:36,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879844984] [2020-10-09 10:35:36,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:36,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:36,625 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-09 10:35:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:36,666 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-09 10:35:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 10:35:36,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:36,667 INFO L225 Difference]: With dead ends: 92 [2020-10-09 10:35:36,668 INFO L226 Difference]: Without dead ends: 90 [2020-10-09 10:35:36,668 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-09 10:35:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-09 10:35:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-09 10:35:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-09 10:35:36,673 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-09 10:35:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:36,674 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-09 10:35:36,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-09 10:35:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:36,675 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:36,675 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 10:35:36,676 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,676 INFO L82 PathProgramCache]: Analyzing trace with hash 484301959, now seen corresponding path program 2 times [2020-10-09 10:35:36,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316869670] [2020-10-09 10:35:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316869670] [2020-10-09 10:35:36,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:36,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:36,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003767366] [2020-10-09 10:35:36,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:36,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:36,751 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-09 10:35:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:36,799 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-09 10:35:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:36,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:36,801 INFO L225 Difference]: With dead ends: 100 [2020-10-09 10:35:36,801 INFO L226 Difference]: Without dead ends: 98 [2020-10-09 10:35:36,802 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-09 10:35:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-09 10:35:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-09 10:35:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-09 10:35:36,807 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-09 10:35:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:36,807 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-09 10:35:36,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-09 10:35:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:36,808 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:36,808 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 10:35:36,809 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash 484324279, now seen corresponding path program 3 times [2020-10-09 10:35:36,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778392072] [2020-10-09 10:35:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778392072] [2020-10-09 10:35:36,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:36,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:36,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561591032] [2020-10-09 10:35:36,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:36,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:36,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:36,873 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-09 10:35:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:36,948 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-09 10:35:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:36,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:36,949 INFO L225 Difference]: With dead ends: 105 [2020-10-09 10:35:36,949 INFO L226 Difference]: Without dead ends: 100 [2020-10-09 10:35:36,950 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-09 10:35:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-09 10:35:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 10:35:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-09 10:35:36,954 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-09 10:35:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:36,955 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-09 10:35:36,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-09 10:35:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:36,955 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:36,956 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 10:35:36,956 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,956 INFO L82 PathProgramCache]: Analyzing trace with hash 484353109, now seen corresponding path program 4 times [2020-10-09 10:35:36,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74642301] [2020-10-09 10:35:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74642301] [2020-10-09 10:35:37,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:37,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:37,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190427305] [2020-10-09 10:35:37,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:37,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:37,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:37,011 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-09 10:35:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:37,086 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-09 10:35:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:37,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:37,088 INFO L225 Difference]: With dead ends: 105 [2020-10-09 10:35:37,088 INFO L226 Difference]: Without dead ends: 100 [2020-10-09 10:35:37,088 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-09 10:35:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-09 10:35:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 10:35:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-09 10:35:37,093 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-09 10:35:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:37,093 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-09 10:35:37,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-09 10:35:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:37,094 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:37,094 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:37,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 10:35:37,095 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash 495405570, now seen corresponding path program 3 times [2020-10-09 10:35:37,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:37,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268197540] [2020-10-09 10:35:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268197540] [2020-10-09 10:35:37,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478096214] [2020-10-09 10:35:37,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:37,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:37,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:37,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:37,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:37,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 10:35:37,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534262003] [2020-10-09 10:35:37,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 10:35:37,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 10:35:37,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:37,322 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-09 10:35:37,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:37,420 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-09 10:35:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:37,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-09 10:35:37,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:37,422 INFO L225 Difference]: With dead ends: 122 [2020-10-09 10:35:37,422 INFO L226 Difference]: Without dead ends: 117 [2020-10-09 10:35:37,422 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-09 10:35:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-09 10:35:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-09 10:35:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-09 10:35:37,427 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-09 10:35:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:37,427 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-09 10:35:37,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 10:35:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-09 10:35:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:37,428 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:37,428 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:37,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-09 10:35:37,641 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:37,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2080229483, now seen corresponding path program 6 times [2020-10-09 10:35:37,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:37,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993924242] [2020-10-09 10:35:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993924242] [2020-10-09 10:35:37,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180893875] [2020-10-09 10:35:37,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:37,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:37,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:37,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:37,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:37,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:37,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458654453] [2020-10-09 10:35:37,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:37,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:37,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:37,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:37,884 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-09 10:35:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:37,930 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-09 10:35:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:37,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:37,937 INFO L225 Difference]: With dead ends: 108 [2020-10-09 10:35:37,937 INFO L226 Difference]: Without dead ends: 105 [2020-10-09 10:35:37,937 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-09 10:35:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-09 10:35:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-09 10:35:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-09 10:35:37,942 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-09 10:35:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:37,942 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-09 10:35:37,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-09 10:35:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:37,943 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:37,943 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:38,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,153 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:38,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2101679003, now seen corresponding path program 7 times [2020-10-09 10:35:38,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:38,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457751603] [2020-10-09 10:35:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457751603] [2020-10-09 10:35:38,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491410762] [2020-10-09 10:35:38,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:38,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:38,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:38,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477500362] [2020-10-09 10:35:38,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:38,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:38,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:38,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:38,381 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-09 10:35:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:38,457 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-09 10:35:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:38,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:38,459 INFO L225 Difference]: With dead ends: 116 [2020-10-09 10:35:38,459 INFO L226 Difference]: Without dead ends: 113 [2020-10-09 10:35:38,460 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-09 10:35:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-09 10:35:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-09 10:35:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-09 10:35:38,464 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-09 10:35:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:38,464 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-09 10:35:38,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-09 10:35:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:38,465 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:38,465 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:38,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-09 10:35:38,670 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:38,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2102370923, now seen corresponding path program 8 times [2020-10-09 10:35:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:38,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387867896] [2020-10-09 10:35:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387867896] [2020-10-09 10:35:38,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933405196] [2020-10-09 10:35:38,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:38,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:38,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:38,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:38,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856331609] [2020-10-09 10:35:38,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:38,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:38,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:38,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:38,907 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-09 10:35:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:39,006 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-09 10:35:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:39,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:39,007 INFO L225 Difference]: With dead ends: 115 [2020-10-09 10:35:39,007 INFO L226 Difference]: Without dead ends: 112 [2020-10-09 10:35:39,008 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-09 10:35:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-09 10:35:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-09 10:35:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-09 10:35:39,013 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-09 10:35:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:39,013 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-09 10:35:39,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-09 10:35:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:39,014 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:39,015 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:39,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-09 10:35:39,226 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2102393243, now seen corresponding path program 9 times [2020-10-09 10:35:39,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:39,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459964736] [2020-10-09 10:35:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459964736] [2020-10-09 10:35:39,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903976274] [2020-10-09 10:35:39,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:39,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:39,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:39,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:39,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:39,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:39,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:39,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194483719] [2020-10-09 10:35:39,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:39,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:39,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:39,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:39,418 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-09 10:35:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:39,559 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-09 10:35:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:39,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:39,560 INFO L225 Difference]: With dead ends: 124 [2020-10-09 10:35:39,561 INFO L226 Difference]: Without dead ends: 118 [2020-10-09 10:35:39,561 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-09 10:35:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-09 10:35:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-09 10:35:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-09 10:35:39,566 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-09 10:35:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:39,566 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-09 10:35:39,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-09 10:35:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:39,567 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:39,567 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:39,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-09 10:35:39,768 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2107902445, now seen corresponding path program 5 times [2020-10-09 10:35:39,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:39,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939408385] [2020-10-09 10:35:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939408385] [2020-10-09 10:35:39,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459432606] [2020-10-09 10:35:39,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:39,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:39,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:39,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:39,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:39,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:39,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625500961] [2020-10-09 10:35:39,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:39,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:39,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:39,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:39,987 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-09 10:35:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:40,035 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-09 10:35:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:40,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:40,036 INFO L225 Difference]: With dead ends: 113 [2020-10-09 10:35:40,037 INFO L226 Difference]: Without dead ends: 111 [2020-10-09 10:35:40,037 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-09 10:35:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-09 10:35:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-09 10:35:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-09 10:35:40,041 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-09 10:35:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:40,041 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-09 10:35:40,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-09 10:35:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:40,042 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:40,042 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:40,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-09 10:35:40,244 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2107903406, now seen corresponding path program 6 times [2020-10-09 10:35:40,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:40,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371652746] [2020-10-09 10:35:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371652746] [2020-10-09 10:35:40,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91804140] [2020-10-09 10:35:40,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:40,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:40,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:40,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:40,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:40,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:40,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672928034] [2020-10-09 10:35:40,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:40,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:40,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:40,448 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-09 10:35:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:40,521 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-09 10:35:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:40,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:40,523 INFO L225 Difference]: With dead ends: 118 [2020-10-09 10:35:40,523 INFO L226 Difference]: Without dead ends: 116 [2020-10-09 10:35:40,523 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-09 10:35:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-09 10:35:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-09 10:35:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-09 10:35:40,528 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-09 10:35:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:40,528 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-09 10:35:40,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-09 10:35:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:40,529 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:40,529 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:40,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:40,730 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:40,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:40,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2107932236, now seen corresponding path program 7 times [2020-10-09 10:35:40,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:40,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480980945] [2020-10-09 10:35:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480980945] [2020-10-09 10:35:40,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678310970] [2020-10-09 10:35:40,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:40,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:40,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:40,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:40,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862356117] [2020-10-09 10:35:40,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:40,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:40,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:40,973 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-09 10:35:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:41,057 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-09 10:35:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:41,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:41,059 INFO L225 Difference]: With dead ends: 119 [2020-10-09 10:35:41,059 INFO L226 Difference]: Without dead ends: 117 [2020-10-09 10:35:41,060 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-09 10:35:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-09 10:35:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-09 10:35:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-09 10:35:41,064 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-09 10:35:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:41,064 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-09 10:35:41,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-09 10:35:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:41,065 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:41,065 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:41,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:41,278 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2128458235, now seen corresponding path program 8 times [2020-10-09 10:35:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:41,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553996022] [2020-10-09 10:35:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553996022] [2020-10-09 10:35:41,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130345574] [2020-10-09 10:35:41,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:41,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:41,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:41,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:41,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:41,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:41,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985764272] [2020-10-09 10:35:41,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:41,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:41,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:41,562 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-09 10:35:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:41,622 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-09 10:35:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:41,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:41,624 INFO L225 Difference]: With dead ends: 122 [2020-10-09 10:35:41,624 INFO L226 Difference]: Without dead ends: 120 [2020-10-09 10:35:41,624 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:41,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-09 10:35:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-09 10:35:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-09 10:35:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-09 10:35:41,629 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-09 10:35:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:41,629 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-09 10:35:41,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-09 10:35:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:41,630 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:41,630 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:41,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-09 10:35:41,841 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459196, now seen corresponding path program 9 times [2020-10-09 10:35:41,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:41,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573424177] [2020-10-09 10:35:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573424177] [2020-10-09 10:35:41,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357054980] [2020-10-09 10:35:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:41,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:41,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:41,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:42,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:42,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844276504] [2020-10-09 10:35:42,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:42,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:42,023 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:42,120 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-09 10:35:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:42,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:42,121 INFO L225 Difference]: With dead ends: 123 [2020-10-09 10:35:42,121 INFO L226 Difference]: Without dead ends: 121 [2020-10-09 10:35:42,122 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-09 10:35:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-09 10:35:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-09 10:35:42,125 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-09 10:35:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:42,126 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-09 10:35:42,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:42,126 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-09 10:35:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:42,126 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:42,127 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:42,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:42,335 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:42,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2129121325, now seen corresponding path program 10 times [2020-10-09 10:35:42,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:42,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816449256] [2020-10-09 10:35:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816449256] [2020-10-09 10:35:42,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681675090] [2020-10-09 10:35:42,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:42,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:42,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:42,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:42,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:42,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:42,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344473605] [2020-10-09 10:35:42,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:42,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:42,536 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-09 10:35:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:42,622 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-09 10:35:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:42,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:42,624 INFO L225 Difference]: With dead ends: 123 [2020-10-09 10:35:42,624 INFO L226 Difference]: Without dead ends: 121 [2020-10-09 10:35:42,624 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-09 10:35:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-09 10:35:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-09 10:35:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-09 10:35:42,629 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-09 10:35:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:42,630 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-09 10:35:42,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-09 10:35:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:42,632 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:42,632 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:42,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-09 10:35:42,842 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2129143645, now seen corresponding path program 11 times [2020-10-09 10:35:42,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:42,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492010406] [2020-10-09 10:35:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492010406] [2020-10-09 10:35:42,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705181038] [2020-10-09 10:35:42,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:42,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:42,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:42,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:42,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:43,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:43,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:43,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286525088] [2020-10-09 10:35:43,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:43,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:43,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:43,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:43,119 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-09 10:35:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:43,356 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-09 10:35:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:43,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:43,358 INFO L225 Difference]: With dead ends: 133 [2020-10-09 10:35:43,359 INFO L226 Difference]: Without dead ends: 128 [2020-10-09 10:35:43,359 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-09 10:35:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-09 10:35:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-09 10:35:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-09 10:35:43,364 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-09 10:35:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:43,364 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-09 10:35:43,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-09 10:35:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:43,365 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:43,366 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:43,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:43,578 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2129151116, now seen corresponding path program 12 times [2020-10-09 10:35:43,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558154504] [2020-10-09 10:35:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558154504] [2020-10-09 10:35:43,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035685761] [2020-10-09 10:35:43,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:43,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:43,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:43,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:43,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:43,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902354695] [2020-10-09 10:35:43,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:43,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:43,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:43,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:43,798 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:43,924 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-09 10:35:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:43,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:43,927 INFO L225 Difference]: With dead ends: 127 [2020-10-09 10:35:43,927 INFO L226 Difference]: Without dead ends: 125 [2020-10-09 10:35:43,927 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-09 10:35:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-09 10:35:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-09 10:35:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-09 10:35:43,932 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-09 10:35:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:43,932 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-09 10:35:43,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-09 10:35:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:43,933 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:43,933 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:44,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-09 10:35:44,144 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2129172475, now seen corresponding path program 13 times [2020-10-09 10:35:44,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:44,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432611207] [2020-10-09 10:35:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432611207] [2020-10-09 10:35:44,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673733602] [2020-10-09 10:35:44,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:44,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:44,313 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:44,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:44,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914128052] [2020-10-09 10:35:44,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:44,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:44,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:44,333 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-09 10:35:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:44,558 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-09 10:35:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:35:44,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:44,560 INFO L225 Difference]: With dead ends: 141 [2020-10-09 10:35:44,560 INFO L226 Difference]: Without dead ends: 136 [2020-10-09 10:35:44,561 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-09 10:35:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-09 10:35:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-09 10:35:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-09 10:35:44,566 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-09 10:35:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:44,566 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-09 10:35:44,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-09 10:35:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:44,567 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:44,567 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:44,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-09 10:35:44,780 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2129173436, now seen corresponding path program 14 times [2020-10-09 10:35:44,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:44,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350122617] [2020-10-09 10:35:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350122617] [2020-10-09 10:35:44,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79689598] [2020-10-09 10:35:44,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:44,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:44,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:44,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:44,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:44,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:44,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:44,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57002081] [2020-10-09 10:35:44,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:44,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:44,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:44,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:44,973 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-09 10:35:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:45,144 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-09 10:35:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:45,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:45,146 INFO L225 Difference]: With dead ends: 136 [2020-10-09 10:35:45,146 INFO L226 Difference]: Without dead ends: 131 [2020-10-09 10:35:45,147 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-09 10:35:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-09 10:35:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-09 10:35:45,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-09 10:35:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:45,151 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-09 10:35:45,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-09 10:35:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:45,151 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:45,152 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:45,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-09 10:35:45,363 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2129381756, now seen corresponding path program 15 times [2020-10-09 10:35:45,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:45,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109222735] [2020-10-09 10:35:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109222735] [2020-10-09 10:35:45,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884475409] [2020-10-09 10:35:45,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:45,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:45,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:45,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:45,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:45,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:45,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069829642] [2020-10-09 10:35:45,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:45,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:45,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:45,568 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-09 10:35:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:45,674 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-09 10:35:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:45,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:45,676 INFO L225 Difference]: With dead ends: 130 [2020-10-09 10:35:45,676 INFO L226 Difference]: Without dead ends: 128 [2020-10-09 10:35:45,677 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-09 10:35:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-09 10:35:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-09 10:35:45,680 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-09 10:35:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:45,680 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-09 10:35:45,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-09 10:35:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:45,681 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:45,681 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:45,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-09 10:35:45,892 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2130044846, now seen corresponding path program 16 times [2020-10-09 10:35:45,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:45,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548210988] [2020-10-09 10:35:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548210988] [2020-10-09 10:35:45,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635349548] [2020-10-09 10:35:45,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:45,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:45,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:45,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:46,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:46,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995472710] [2020-10-09 10:35:46,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:46,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:46,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:46,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:46,099 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-09 10:35:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:46,239 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-09 10:35:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:46,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:46,240 INFO L225 Difference]: With dead ends: 131 [2020-10-09 10:35:46,241 INFO L226 Difference]: Without dead ends: 129 [2020-10-09 10:35:46,241 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-09 10:35:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-09 10:35:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-09 10:35:46,247 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-09 10:35:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:46,248 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-09 10:35:46,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-09 10:35:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:46,248 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:46,249 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:46,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-09 10:35:46,459 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2130066205, now seen corresponding path program 17 times [2020-10-09 10:35:46,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:46,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701637141] [2020-10-09 10:35:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701637141] [2020-10-09 10:35:46,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095659179] [2020-10-09 10:35:46,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:46,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:46,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:46,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:46,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:46,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:46,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:46,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823891544] [2020-10-09 10:35:46,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:46,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:46,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:46,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:46,635 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:46,776 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-09 10:35:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:46,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:46,778 INFO L225 Difference]: With dead ends: 131 [2020-10-09 10:35:46,778 INFO L226 Difference]: Without dead ends: 126 [2020-10-09 10:35:46,779 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-09 10:35:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-09 10:35:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-09 10:35:46,783 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-09 10:35:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:46,783 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-09 10:35:46,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-09 10:35:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:46,784 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:46,784 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:46,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:46,996 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2130067166, now seen corresponding path program 18 times [2020-10-09 10:35:46,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:46,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582232984] [2020-10-09 10:35:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582232984] [2020-10-09 10:35:47,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325202619] [2020-10-09 10:35:47,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:47,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:47,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:47,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:47,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:47,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:47,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:47,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141061213] [2020-10-09 10:35:47,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:47,167 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:47,402 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-09 10:35:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:35:47,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:47,405 INFO L225 Difference]: With dead ends: 145 [2020-10-09 10:35:47,405 INFO L226 Difference]: Without dead ends: 140 [2020-10-09 10:35:47,405 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-09 10:35:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-09 10:35:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-09 10:35:47,409 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-09 10:35:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:47,409 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-09 10:35:47,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-09 10:35:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:47,410 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:47,410 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:47,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-09 10:35:47,620 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:47,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2130095996, now seen corresponding path program 19 times [2020-10-09 10:35:47,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:47,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718031367] [2020-10-09 10:35:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718031367] [2020-10-09 10:35:47,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966228087] [2020-10-09 10:35:47,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:47,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:47,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:47,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:47,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710936838] [2020-10-09 10:35:47,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:47,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:47,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:47,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:47,796 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-09 10:35:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:47,988 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-09 10:35:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:47,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:47,990 INFO L225 Difference]: With dead ends: 135 [2020-10-09 10:35:47,990 INFO L226 Difference]: Without dead ends: 130 [2020-10-09 10:35:47,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-09 10:35:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-09 10:35:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-09 10:35:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-09 10:35:47,994 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-09 10:35:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:47,995 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-09 10:35:47,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-09 10:35:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:47,995 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:47,995 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:48,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,202 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:48,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:48,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1822274800, now seen corresponding path program 4 times [2020-10-09 10:35:48,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:48,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000586779] [2020-10-09 10:35:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000586779] [2020-10-09 10:35:48,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33793772] [2020-10-09 10:35:48,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:48,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:48,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:48,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:48,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:48,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-09 10:35:48,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525964338] [2020-10-09 10:35:48,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 10:35:48,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 10:35:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:48,451 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-09 10:35:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:48,570 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-09 10:35:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:48,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-09 10:35:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:48,571 INFO L225 Difference]: With dead ends: 143 [2020-10-09 10:35:48,571 INFO L226 Difference]: Without dead ends: 138 [2020-10-09 10:35:48,572 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:35:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-09 10:35:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-09 10:35:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-09 10:35:48,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-09 10:35:48,576 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-09 10:35:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:48,576 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-09 10:35:48,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 10:35:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-09 10:35:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:48,577 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:48,577 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:48,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-09 10:35:48,782 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash 62604888, now seen corresponding path program 10 times [2020-10-09 10:35:48,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:48,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133750895] [2020-10-09 10:35:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133750895] [2020-10-09 10:35:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128267076] [2020-10-09 10:35:48,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:48,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:48,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:48,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:49,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:49,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808746829] [2020-10-09 10:35:49,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:49,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:49,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:49,050 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-09 10:35:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:49,096 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-09 10:35:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:49,097 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:49,098 INFO L225 Difference]: With dead ends: 132 [2020-10-09 10:35:49,098 INFO L226 Difference]: Without dead ends: 129 [2020-10-09 10:35:49,098 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-09 10:35:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-09 10:35:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 10:35:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-09 10:35:49,104 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-09 10:35:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:49,104 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-09 10:35:49,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-09 10:35:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:49,105 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:49,105 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:49,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-09 10:35:49,317 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash 727540008, now seen corresponding path program 11 times [2020-10-09 10:35:49,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:49,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377540880] [2020-10-09 10:35:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377540880] [2020-10-09 10:35:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077145002] [2020-10-09 10:35:49,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:49,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:35:49,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:49,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:49,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:49,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:49,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173670892] [2020-10-09 10:35:49,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:49,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:49,619 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-09 10:35:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:49,711 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-09 10:35:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:49,712 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:49,714 INFO L225 Difference]: With dead ends: 143 [2020-10-09 10:35:49,714 INFO L226 Difference]: Without dead ends: 140 [2020-10-09 10:35:49,715 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-09 10:35:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-09 10:35:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 10:35:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-09 10:35:49,720 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-09 10:35:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:49,721 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-09 10:35:49,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-09 10:35:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:49,722 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:49,722 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:49,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-09 10:35:49,935 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:49,936 INFO L82 PathProgramCache]: Analyzing trace with hash 748989528, now seen corresponding path program 12 times [2020-10-09 10:35:49,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:49,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518060569] [2020-10-09 10:35:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518060569] [2020-10-09 10:35:50,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242623936] [2020-10-09 10:35:50,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:50,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:35:50,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:50,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:50,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:50,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:50,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725449269] [2020-10-09 10:35:50,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:50,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:50,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:50,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:50,180 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-09 10:35:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:50,263 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-09 10:35:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:50,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:50,265 INFO L225 Difference]: With dead ends: 142 [2020-10-09 10:35:50,265 INFO L226 Difference]: Without dead ends: 139 [2020-10-09 10:35:50,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-09 10:35:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-09 10:35:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-09 10:35:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-09 10:35:50,269 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-09 10:35:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:50,269 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-09 10:35:50,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-09 10:35:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:50,270 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:50,270 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:50,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-09 10:35:50,478 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:50,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:50,479 INFO L82 PathProgramCache]: Analyzing trace with hash 749681448, now seen corresponding path program 13 times [2020-10-09 10:35:50,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:50,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240557637] [2020-10-09 10:35:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240557637] [2020-10-09 10:35:50,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437165945] [2020-10-09 10:35:50,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:50,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:50,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:50,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325082556] [2020-10-09 10:35:50,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:50,720 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-09 10:35:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:50,819 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-09 10:35:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:50,819 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:50,820 INFO L225 Difference]: With dead ends: 141 [2020-10-09 10:35:50,821 INFO L226 Difference]: Without dead ends: 138 [2020-10-09 10:35:50,821 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-09 10:35:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-09 10:35:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-09 10:35:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-09 10:35:50,825 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-09 10:35:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:50,825 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-09 10:35:50,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-09 10:35:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:50,826 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:50,827 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:51,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-09 10:35:51,036 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash 749703768, now seen corresponding path program 14 times [2020-10-09 10:35:51,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:51,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342391698] [2020-10-09 10:35:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342391698] [2020-10-09 10:35:51,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845168857] [2020-10-09 10:35:51,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:51,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:51,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:51,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:51,242 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:51,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861465450] [2020-10-09 10:35:51,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:51,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:51,254 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-09 10:35:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:51,422 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-09 10:35:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:51,428 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:51,429 INFO L225 Difference]: With dead ends: 150 [2020-10-09 10:35:51,429 INFO L226 Difference]: Without dead ends: 144 [2020-10-09 10:35:51,430 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-09 10:35:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-09 10:35:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-09 10:35:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-09 10:35:51,433 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-09 10:35:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:51,434 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-09 10:35:51,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-09 10:35:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:51,435 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:51,435 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:51,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,644 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 920465749, now seen corresponding path program 20 times [2020-10-09 10:35:51,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:51,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975469528] [2020-10-09 10:35:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975469528] [2020-10-09 10:35:51,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530863879] [2020-10-09 10:35:51,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:51,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:51,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:51,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:51,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:51,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387454672] [2020-10-09 10:35:51,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:51,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:51,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:51,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:51,974 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-09 10:35:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:52,059 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-09 10:35:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:52,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:52,061 INFO L225 Difference]: With dead ends: 138 [2020-10-09 10:35:52,061 INFO L226 Difference]: Without dead ends: 136 [2020-10-09 10:35:52,062 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-09 10:35:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-09 10:35:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-09 10:35:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-09 10:35:52,067 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-09 10:35:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:52,067 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-09 10:35:52,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-09 10:35:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:52,069 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:52,069 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:52,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-09 10:35:52,283 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash 920466710, now seen corresponding path program 21 times [2020-10-09 10:35:52,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:52,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46258851] [2020-10-09 10:35:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:52,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46258851] [2020-10-09 10:35:52,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896252393] [2020-10-09 10:35:52,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:52,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:52,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:52,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:52,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:52,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:52,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:52,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032380359] [2020-10-09 10:35:52,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:52,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:52,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:52,681 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-09 10:35:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:52,815 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-09 10:35:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:52,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:52,817 INFO L225 Difference]: With dead ends: 145 [2020-10-09 10:35:52,817 INFO L226 Difference]: Without dead ends: 143 [2020-10-09 10:35:52,817 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-09 10:35:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-09 10:35:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-09 10:35:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-09 10:35:52,821 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-09 10:35:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:52,821 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-09 10:35:52,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:52,821 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-09 10:35:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:52,822 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:52,822 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:53,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-09 10:35:53,031 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash 920495540, now seen corresponding path program 22 times [2020-10-09 10:35:53,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:53,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753835979] [2020-10-09 10:35:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753835979] [2020-10-09 10:35:53,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501612979] [2020-10-09 10:35:53,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:53,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:53,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:53,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:53,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172582662] [2020-10-09 10:35:53,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:53,272 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-09 10:35:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:53,421 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-09 10:35:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:53,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:53,423 INFO L225 Difference]: With dead ends: 150 [2020-10-09 10:35:53,424 INFO L226 Difference]: Without dead ends: 148 [2020-10-09 10:35:53,424 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-09 10:35:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-09 10:35:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-09 10:35:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-09 10:35:53,429 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-09 10:35:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:53,429 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-09 10:35:53,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-09 10:35:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:53,431 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:53,431 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:53,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,643 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:53,644 INFO L82 PathProgramCache]: Analyzing trace with hash 921389270, now seen corresponding path program 23 times [2020-10-09 10:35:53,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:53,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485370528] [2020-10-09 10:35:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485370528] [2020-10-09 10:35:53,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228208277] [2020-10-09 10:35:53,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:35:53,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:53,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:53,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:53,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:53,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844574422] [2020-10-09 10:35:53,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:53,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:53,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:53,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:53,890 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-09 10:35:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:54,004 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-09 10:35:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:54,004 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:54,005 INFO L225 Difference]: With dead ends: 148 [2020-10-09 10:35:54,005 INFO L226 Difference]: Without dead ends: 146 [2020-10-09 10:35:54,006 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-09 10:35:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-09 10:35:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-09 10:35:54,009 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-09 10:35:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:54,009 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-09 10:35:54,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-09 10:35:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:54,011 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:54,011 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:54,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-09 10:35:54,221 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:54,222 INFO L82 PathProgramCache]: Analyzing trace with hash 921390231, now seen corresponding path program 24 times [2020-10-09 10:35:54,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:54,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582189568] [2020-10-09 10:35:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:54,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582189568] [2020-10-09 10:35:54,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730185875] [2020-10-09 10:35:54,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:54,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:54,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:54,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:54,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:54,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:54,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:54,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492421579] [2020-10-09 10:35:54,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:54,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:54,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:54,452 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-09 10:35:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:54,598 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-09 10:35:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:54,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:54,600 INFO L225 Difference]: With dead ends: 149 [2020-10-09 10:35:54,600 INFO L226 Difference]: Without dead ends: 147 [2020-10-09 10:35:54,601 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-09 10:35:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-09 10:35:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-09 10:35:54,605 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-09 10:35:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:54,606 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-09 10:35:54,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-09 10:35:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:54,607 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:54,607 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:54,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:54,818 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:54,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1557695239, now seen corresponding path program 25 times [2020-10-09 10:35:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:54,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689394270] [2020-10-09 10:35:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:54,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689394270] [2020-10-09 10:35:54,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979673934] [2020-10-09 10:35:54,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:54,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:55,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:55,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029009311] [2020-10-09 10:35:55,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:55,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:55,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:55,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:55,083 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-09 10:35:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:55,149 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-09 10:35:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:55,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:55,151 INFO L225 Difference]: With dead ends: 152 [2020-10-09 10:35:55,151 INFO L226 Difference]: Without dead ends: 150 [2020-10-09 10:35:55,151 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-09 10:35:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-09 10:35:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:35:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-09 10:35:55,155 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-09 10:35:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:55,155 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-09 10:35:55,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-09 10:35:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:55,156 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:55,156 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:55,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-09 10:35:55,366 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1557696200, now seen corresponding path program 26 times [2020-10-09 10:35:55,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:55,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107193725] [2020-10-09 10:35:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107193725] [2020-10-09 10:35:55,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724089538] [2020-10-09 10:35:55,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:55,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:55,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:55,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:55,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910055788] [2020-10-09 10:35:55,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:55,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:55,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:55,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:55,613 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-09 10:35:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:55,761 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-09 10:35:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:55,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:55,763 INFO L225 Difference]: With dead ends: 153 [2020-10-09 10:35:55,763 INFO L226 Difference]: Without dead ends: 151 [2020-10-09 10:35:55,764 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-09 10:35:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-09 10:35:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-09 10:35:55,768 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-09 10:35:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:55,768 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-09 10:35:55,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-09 10:35:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:55,769 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:55,769 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:55,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-09 10:35:55,980 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725030, now seen corresponding path program 27 times [2020-10-09 10:35:55,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:55,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002083677] [2020-10-09 10:35:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002083677] [2020-10-09 10:35:56,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708622091] [2020-10-09 10:35:56,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:56,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:56,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:56,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:56,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:56,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265347298] [2020-10-09 10:35:56,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:56,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:56,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:56,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:56,208 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-09 10:35:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:56,369 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:35:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:56,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:56,371 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:35:56,371 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 10:35:56,372 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 10:35:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-09 10:35:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-09 10:35:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-09 10:35:56,375 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-09 10:35:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:56,376 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-09 10:35:56,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-09 10:35:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:56,376 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:56,377 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:56,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-09 10:35:56,588 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251029, now seen corresponding path program 28 times [2020-10-09 10:35:56,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:56,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190010145] [2020-10-09 10:35:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190010145] [2020-10-09 10:35:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366929089] [2020-10-09 10:35:56,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:56,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:56,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:56,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:56,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:56,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514921210] [2020-10-09 10:35:56,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:56,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:56,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:56,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:56,825 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-09 10:35:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:56,913 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-09 10:35:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:56,913 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:56,914 INFO L225 Difference]: With dead ends: 148 [2020-10-09 10:35:56,914 INFO L226 Difference]: Without dead ends: 146 [2020-10-09 10:35:56,915 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-09 10:35:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-09 10:35:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-09 10:35:56,918 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-09 10:35:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:56,918 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-09 10:35:56,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-09 10:35:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:56,919 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:56,919 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:57,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-09 10:35:57,120 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251990, now seen corresponding path program 29 times [2020-10-09 10:35:57,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:57,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806427349] [2020-10-09 10:35:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806427349] [2020-10-09 10:35:57,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361233789] [2020-10-09 10:35:57,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:57,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:57,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:57,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:57,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:57,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680181807] [2020-10-09 10:35:57,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:57,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:57,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:57,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:57,365 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-09 10:35:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:57,563 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-09 10:35:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:57,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:57,565 INFO L225 Difference]: With dead ends: 157 [2020-10-09 10:35:57,565 INFO L226 Difference]: Without dead ends: 155 [2020-10-09 10:35:57,566 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-09 10:35:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-09 10:35:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-09 10:35:57,569 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-09 10:35:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:57,569 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-09 10:35:57,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-09 10:35:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:57,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:57,570 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:57,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,779 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1578914119, now seen corresponding path program 30 times [2020-10-09 10:35:57,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:57,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936154055] [2020-10-09 10:35:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936154055] [2020-10-09 10:35:57,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127113784] [2020-10-09 10:35:57,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:57,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:57,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:35:57,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:57,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-09 10:35:57,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030666926] [2020-10-09 10:35:57,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:57,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:57,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:57,923 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-09 10:35:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:58,015 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-09 10:35:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:58,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-09 10:35:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:58,016 INFO L225 Difference]: With dead ends: 149 [2020-10-09 10:35:58,017 INFO L226 Difference]: Without dead ends: 147 [2020-10-09 10:35:58,017 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-09 10:35:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-09 10:35:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:35:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:35:58,021 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:35:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:58,021 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:35:58,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:35:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:58,022 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:58,022 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:58,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-09 10:35:58,229 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1578936439, now seen corresponding path program 31 times [2020-10-09 10:35:58,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:58,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036834226] [2020-10-09 10:35:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:58,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036834226] [2020-10-09 10:35:58,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059537566] [2020-10-09 10:35:58,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:58,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:58,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:58,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:58,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577657989] [2020-10-09 10:35:58,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:58,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:58,467 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:35:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:58,737 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-09 10:35:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:58,737 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:58,739 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:35:58,739 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:35:58,740 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:35:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:35:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-09 10:35:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:35:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-09 10:35:58,744 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-09 10:35:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:58,744 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-09 10:35:58,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-09 10:35:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:58,744 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:58,744 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:58,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-09 10:35:58,946 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1578943910, now seen corresponding path program 32 times [2020-10-09 10:35:58,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750370716] [2020-10-09 10:35:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750370716] [2020-10-09 10:35:59,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203439464] [2020-10-09 10:35:59,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:59,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:59,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:59,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:59,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:59,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762530260] [2020-10-09 10:35:59,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:59,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:59,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:59,188 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-09 10:35:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:59,378 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:35:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:59,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:59,380 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:35:59,380 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 10:35:59,381 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:35:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 10:35:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-09 10:35:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:35:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:35:59,384 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:35:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:59,384 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:35:59,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:35:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:59,385 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:59,385 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:59,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,586 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:59,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:59,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1578965269, now seen corresponding path program 33 times [2020-10-09 10:35:59,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:59,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972984606] [2020-10-09 10:35:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972984606] [2020-10-09 10:35:59,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382639656] [2020-10-09 10:35:59,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:59,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:59,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:59,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:59,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:59,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:59,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422758436] [2020-10-09 10:35:59,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:59,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:59,832 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:36:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:00,206 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-09 10:36:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:36:00,207 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:00,208 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:36:00,209 INFO L226 Difference]: Without dead ends: 171 [2020-10-09 10:36:00,209 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:36:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-09 10:36:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-09 10:36:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:36:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:36:00,212 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:36:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:00,213 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:36:00,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:36:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:00,213 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:00,214 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:00,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-09 10:36:00,424 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:00,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1578966230, now seen corresponding path program 34 times [2020-10-09 10:36:00,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:00,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920290983] [2020-10-09 10:36:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:00,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920290983] [2020-10-09 10:36:00,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406577688] [2020-10-09 10:36:00,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:00,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:00,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:00,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:00,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:00,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:00,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:00,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:00,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732366914] [2020-10-09 10:36:00,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:00,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:00,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:00,715 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:36:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:00,979 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-09 10:36:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:00,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:00,981 INFO L225 Difference]: With dead ends: 166 [2020-10-09 10:36:00,981 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:36:00,981 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:36:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-09 10:36:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:36:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-09 10:36:00,985 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-09 10:36:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:00,985 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-09 10:36:00,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-09 10:36:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:00,986 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:00,986 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:01,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:01,198 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1579174550, now seen corresponding path program 35 times [2020-10-09 10:36:01,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:01,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822915287] [2020-10-09 10:36:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:01,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822915287] [2020-10-09 10:36:01,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757733300] [2020-10-09 10:36:01,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:01,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:01,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:01,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:01,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:01,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:01,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595898187] [2020-10-09 10:36:01,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:01,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:01,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:01,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:01,474 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-09 10:36:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:01,745 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-09 10:36:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:01,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:01,747 INFO L225 Difference]: With dead ends: 163 [2020-10-09 10:36:01,747 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:36:01,747 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:36:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-09 10:36:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-09 10:36:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-09 10:36:01,752 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-09 10:36:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:01,752 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-09 10:36:01,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-09 10:36:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:01,753 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:01,754 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-09 10:36:01,954 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1579837640, now seen corresponding path program 36 times [2020-10-09 10:36:01,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:01,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608706173] [2020-10-09 10:36:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608706173] [2020-10-09 10:36:02,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928719915] [2020-10-09 10:36:02,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:02,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:02,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:02,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:02,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:02,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222343506] [2020-10-09 10:36:02,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:02,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:02,189 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-09 10:36:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:02,457 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-09 10:36:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:02,458 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:02,459 INFO L225 Difference]: With dead ends: 170 [2020-10-09 10:36:02,460 INFO L226 Difference]: Without dead ends: 168 [2020-10-09 10:36:02,460 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-09 10:36:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-09 10:36:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-09 10:36:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-09 10:36:02,463 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-09 10:36:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:02,463 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-09 10:36:02,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-09 10:36:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:02,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:02,464 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:02,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,665 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1579858999, now seen corresponding path program 37 times [2020-10-09 10:36:02,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:02,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897672937] [2020-10-09 10:36:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897672937] [2020-10-09 10:36:02,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548812510] [2020-10-09 10:36:02,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:02,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:02,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:02,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:02,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:02,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900115019] [2020-10-09 10:36:02,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:02,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:02,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:02,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:02,851 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-09 10:36:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:03,207 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-09 10:36:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:03,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:03,209 INFO L225 Difference]: With dead ends: 177 [2020-10-09 10:36:03,209 INFO L226 Difference]: Without dead ends: 172 [2020-10-09 10:36:03,210 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:36:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-09 10:36:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-09 10:36:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-09 10:36:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-09 10:36:03,213 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-09 10:36:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:03,214 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-09 10:36:03,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-09 10:36:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:03,214 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:03,214 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:03,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-09 10:36:03,424 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1579859960, now seen corresponding path program 38 times [2020-10-09 10:36:03,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:03,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408258085] [2020-10-09 10:36:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408258085] [2020-10-09 10:36:03,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446672173] [2020-10-09 10:36:03,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:03,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:03,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:03,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:03,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:03,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:03,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:03,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236495536] [2020-10-09 10:36:03,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:03,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:03,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:03,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:03,625 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-09 10:36:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:04,034 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-09 10:36:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:04,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:04,036 INFO L225 Difference]: With dead ends: 190 [2020-10-09 10:36:04,036 INFO L226 Difference]: Without dead ends: 182 [2020-10-09 10:36:04,037 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:36:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-09 10:36:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-09 10:36:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:36:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-09 10:36:04,041 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-09 10:36:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:04,041 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-09 10:36:04,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-09 10:36:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:04,041 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:04,041 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:04,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-09 10:36:04,242 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:04,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1579888790, now seen corresponding path program 39 times [2020-10-09 10:36:04,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:04,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516610363] [2020-10-09 10:36:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516610363] [2020-10-09 10:36:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219795059] [2020-10-09 10:36:04,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:04,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:04,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:04,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:04,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:04,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:04,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:04,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984947026] [2020-10-09 10:36:04,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:04,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:04,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:04,440 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-09 10:36:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:04,810 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-09 10:36:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:04,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:04,812 INFO L225 Difference]: With dead ends: 180 [2020-10-09 10:36:04,813 INFO L226 Difference]: Without dead ends: 175 [2020-10-09 10:36:04,813 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-09 10:36:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-09 10:36:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:36:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-09 10:36:04,816 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-09 10:36:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:04,816 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-09 10:36:04,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-09 10:36:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:04,816 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:04,817 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:05,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-09 10:36:05,017 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:05,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1586324390, now seen corresponding path program 40 times [2020-10-09 10:36:05,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:05,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196282176] [2020-10-09 10:36:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196282176] [2020-10-09 10:36:05,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107067102] [2020-10-09 10:36:05,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:05,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:05,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:05,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:05,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:05,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147252141] [2020-10-09 10:36:05,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:05,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:05,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:05,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:05,240 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-09 10:36:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:05,406 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-09 10:36:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:05,406 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:05,408 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:36:05,408 INFO L226 Difference]: Without dead ends: 162 [2020-10-09 10:36:05,408 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-09 10:36:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-09 10:36:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:36:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-09 10:36:05,412 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-09 10:36:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:05,412 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-09 10:36:05,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-09 10:36:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:05,412 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:05,413 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:05,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-09 10:36:05,616 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1586325351, now seen corresponding path program 41 times [2020-10-09 10:36:05,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:05,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458682601] [2020-10-09 10:36:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458682601] [2020-10-09 10:36:05,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487433245] [2020-10-09 10:36:05,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:05,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:05,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:05,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:05,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:05,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:05,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245573003] [2020-10-09 10:36:05,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:05,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:05,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:05,844 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-09 10:36:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:06,010 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-09 10:36:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:06,010 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:06,011 INFO L225 Difference]: With dead ends: 161 [2020-10-09 10:36:06,012 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:36:06,012 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:36:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-09 10:36:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:36:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-09 10:36:06,015 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-09 10:36:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-09 10:36:06,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-09 10:36:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:06,016 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:06,016 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:06,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-09 10:36:06,228 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880180, now seen corresponding path program 42 times [2020-10-09 10:36:06,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:06,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402426376] [2020-10-09 10:36:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402426376] [2020-10-09 10:36:06,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001537375] [2020-10-09 10:36:06,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:06,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:36:06,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:06,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:06,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:06,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950122664] [2020-10-09 10:36:06,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:06,442 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-09 10:36:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:06,666 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-09 10:36:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:06,670 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:06,671 INFO L225 Difference]: With dead ends: 165 [2020-10-09 10:36:06,671 INFO L226 Difference]: Without dead ends: 163 [2020-10-09 10:36:06,672 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-09 10:36:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-09 10:36:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:36:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-09 10:36:06,692 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-09 10:36:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:06,692 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-09 10:36:06,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-09 10:36:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:06,693 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:06,693 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:06,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-09 10:36:06,898 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1606881141, now seen corresponding path program 43 times [2020-10-09 10:36:06,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:06,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135417825] [2020-10-09 10:36:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135417825] [2020-10-09 10:36:06,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63184436] [2020-10-09 10:36:06,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:07,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:07,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:07,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:07,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:07,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780709807] [2020-10-09 10:36:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:07,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:07,110 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-09 10:36:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:07,346 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-09 10:36:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:07,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:07,348 INFO L225 Difference]: With dead ends: 167 [2020-10-09 10:36:07,348 INFO L226 Difference]: Without dead ends: 165 [2020-10-09 10:36:07,348 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-09 10:36:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-09 10:36:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:36:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-09 10:36:07,352 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-09 10:36:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:07,352 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-09 10:36:07,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-09 10:36:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:07,353 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:07,353 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:07,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:07,558 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:07,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1607543270, now seen corresponding path program 44 times [2020-10-09 10:36:07,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:07,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680072930] [2020-10-09 10:36:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:07,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680072930] [2020-10-09 10:36:07,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993675611] [2020-10-09 10:36:07,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:07,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:07,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:07,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:07,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:07,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:07,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:07,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142063545] [2020-10-09 10:36:07,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:07,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:07,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:07,778 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-09 10:36:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:08,065 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-09 10:36:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:36:08,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:08,067 INFO L225 Difference]: With dead ends: 168 [2020-10-09 10:36:08,067 INFO L226 Difference]: Without dead ends: 166 [2020-10-09 10:36:08,068 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-09 10:36:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-09 10:36:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:36:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-09 10:36:08,071 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-09 10:36:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:08,071 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-09 10:36:08,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-09 10:36:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:08,071 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:08,072 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:08,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:08,272 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:08,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1607564629, now seen corresponding path program 45 times [2020-10-09 10:36:08,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:08,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929342740] [2020-10-09 10:36:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929342740] [2020-10-09 10:36:08,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556528586] [2020-10-09 10:36:08,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:08,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:08,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:08,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:08,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:08,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:08,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:08,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931978447] [2020-10-09 10:36:08,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:08,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:08,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:08,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:08,464 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-09 10:36:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:08,672 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-09 10:36:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:08,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:08,674 INFO L225 Difference]: With dead ends: 160 [2020-10-09 10:36:08,674 INFO L226 Difference]: Without dead ends: 155 [2020-10-09 10:36:08,674 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-09 10:36:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-09 10:36:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:36:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-09 10:36:08,678 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-09 10:36:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:08,678 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-09 10:36:08,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-09 10:36:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:08,679 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:08,679 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:08,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:08,881 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:08,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1607565590, now seen corresponding path program 46 times [2020-10-09 10:36:08,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:08,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974194909] [2020-10-09 10:36:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974194909] [2020-10-09 10:36:08,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729956122] [2020-10-09 10:36:08,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:09,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:09,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:09,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:09,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:09,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969192340] [2020-10-09 10:36:09,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:09,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:09,133 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-09 10:36:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:09,501 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-09 10:36:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:09,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:09,503 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:36:09,503 INFO L226 Difference]: Without dead ends: 181 [2020-10-09 10:36:09,504 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-09 10:36:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-09 10:36:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:36:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-09 10:36:09,506 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-09 10:36:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:09,507 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-09 10:36:09,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-09 10:36:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:09,507 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:09,507 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:09,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:09,709 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1607573061, now seen corresponding path program 47 times [2020-10-09 10:36:09,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:09,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280723896] [2020-10-09 10:36:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280723896] [2020-10-09 10:36:09,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845022672] [2020-10-09 10:36:09,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:09,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:09,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:09,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:09,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:09,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:09,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6756568] [2020-10-09 10:36:09,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:09,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:09,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:09,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:09,932 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-09 10:36:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:10,212 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-09 10:36:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:36:10,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:10,214 INFO L225 Difference]: With dead ends: 169 [2020-10-09 10:36:10,214 INFO L226 Difference]: Without dead ends: 167 [2020-10-09 10:36:10,215 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-09 10:36:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-09 10:36:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:36:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-09 10:36:10,218 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-09 10:36:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:10,218 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-09 10:36:10,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-09 10:36:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:10,218 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:10,219 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:10,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-09 10:36:10,420 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1607594420, now seen corresponding path program 48 times [2020-10-09 10:36:10,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:10,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429023791] [2020-10-09 10:36:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:10,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429023791] [2020-10-09 10:36:10,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608035862] [2020-10-09 10:36:10,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:10,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:10,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:10,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:10,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:10,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:10,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:10,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3088429] [2020-10-09 10:36:10,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:10,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:10,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:10,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:10,626 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-09 10:36:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:11,006 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-09 10:36:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:11,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:11,008 INFO L225 Difference]: With dead ends: 192 [2020-10-09 10:36:11,008 INFO L226 Difference]: Without dead ends: 184 [2020-10-09 10:36:11,008 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:36:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-09 10:36:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-09 10:36:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-09 10:36:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-09 10:36:11,012 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-09 10:36:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:11,012 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-09 10:36:11,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-09 10:36:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:11,013 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:11,013 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:11,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:11,213 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1607595381, now seen corresponding path program 49 times [2020-10-09 10:36:11,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:11,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463979111] [2020-10-09 10:36:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:11,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463979111] [2020-10-09 10:36:11,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729095389] [2020-10-09 10:36:11,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:11,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:11,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:11,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:11,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:11,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727772655] [2020-10-09 10:36:11,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:11,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:11,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:11,412 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-09 10:36:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:11,786 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-09 10:36:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:11,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:11,788 INFO L225 Difference]: With dead ends: 180 [2020-10-09 10:36:11,789 INFO L226 Difference]: Without dead ends: 175 [2020-10-09 10:36:11,789 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:36:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-09 10:36:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-09 10:36:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-09 10:36:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-09 10:36:11,792 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-09 10:36:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:11,793 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-09 10:36:11,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-09 10:36:11,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:11,793 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:11,793 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:12,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-09 10:36:12,003 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:12,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:12,003 INFO L82 PathProgramCache]: Analyzing trace with hash -655922238, now seen corresponding path program 5 times [2020-10-09 10:36:12,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:12,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798243187] [2020-10-09 10:36:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798243187] [2020-10-09 10:36:12,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351430958] [2020-10-09 10:36:12,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:12,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:12,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:12,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:12,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:12,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 10:36:12,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058217047] [2020-10-09 10:36:12,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:36:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:12,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:36:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:12,282 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-09 10:36:12,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:12,450 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-09 10:36:12,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:12,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-09 10:36:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:12,452 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:36:12,452 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:36:12,452 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:36:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-09 10:36:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:36:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-09 10:36:12,455 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-09 10:36:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:12,455 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-09 10:36:12,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:36:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-09 10:36:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:12,456 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:12,456 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:12,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,657 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1940751883, now seen corresponding path program 15 times [2020-10-09 10:36:12,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:12,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603523777] [2020-10-09 10:36:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603523777] [2020-10-09 10:36:12,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089152189] [2020-10-09 10:36:12,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:12,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:12,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:12,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:12,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:12,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129637580] [2020-10-09 10:36:12,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:12,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:12,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:12,965 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-09 10:36:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:13,036 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:36:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:36:13,037 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:13,038 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:36:13,038 INFO L226 Difference]: Without dead ends: 153 [2020-10-09 10:36:13,038 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-09 10:36:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-09 10:36:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-09 10:36:13,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-09 10:36:13,044 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-09 10:36:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:13,044 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-09 10:36:13,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-09 10:36:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:13,045 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:13,045 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:13,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-09 10:36:13,256 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1078904123, now seen corresponding path program 16 times [2020-10-09 10:36:13,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:13,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419807199] [2020-10-09 10:36:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419807199] [2020-10-09 10:36:13,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474849767] [2020-10-09 10:36:13,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:13,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:13,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:13,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:13,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:13,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:13,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984461507] [2020-10-09 10:36:13,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:13,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:13,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:13,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:13,548 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-09 10:36:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:13,636 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-09 10:36:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:13,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:13,638 INFO L225 Difference]: With dead ends: 170 [2020-10-09 10:36:13,638 INFO L226 Difference]: Without dead ends: 167 [2020-10-09 10:36:13,639 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-09 10:36:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-09 10:36:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-09 10:36:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-09 10:36:13,642 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-09 10:36:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:13,643 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-09 10:36:13,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-09 10:36:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:13,644 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:13,645 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:13,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:13,845 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:13,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1743839243, now seen corresponding path program 17 times [2020-10-09 10:36:13,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:13,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037674389] [2020-10-09 10:36:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037674389] [2020-10-09 10:36:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600421265] [2020-10-09 10:36:13,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:14,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:14,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:14,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:14,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:14,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:14,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611844499] [2020-10-09 10:36:14,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:14,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:14,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:14,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:14,151 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-09 10:36:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:14,243 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-09 10:36:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:14,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:14,245 INFO L225 Difference]: With dead ends: 169 [2020-10-09 10:36:14,245 INFO L226 Difference]: Without dead ends: 166 [2020-10-09 10:36:14,246 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:36:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-09 10:36:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-09 10:36:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-09 10:36:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-09 10:36:14,248 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-09 10:36:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:14,249 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-09 10:36:14,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-09 10:36:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:14,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:14,249 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:14,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:14,454 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1765288763, now seen corresponding path program 18 times [2020-10-09 10:36:14,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:14,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349913891] [2020-10-09 10:36:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349913891] [2020-10-09 10:36:14,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947336923] [2020-10-09 10:36:14,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:14,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:36:14,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:14,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:14,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:14,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:14,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190838191] [2020-10-09 10:36:14,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:14,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:14,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:14,721 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-09 10:36:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:14,829 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-09 10:36:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:14,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:14,831 INFO L225 Difference]: With dead ends: 168 [2020-10-09 10:36:14,831 INFO L226 Difference]: Without dead ends: 165 [2020-10-09 10:36:14,831 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-09 10:36:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-09 10:36:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-09 10:36:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-09 10:36:14,836 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-09 10:36:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:14,836 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-09 10:36:14,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-09 10:36:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:14,837 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:14,837 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:15,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-09 10:36:15,046 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1765980683, now seen corresponding path program 19 times [2020-10-09 10:36:15,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:15,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891267714] [2020-10-09 10:36:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891267714] [2020-10-09 10:36:15,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925460369] [2020-10-09 10:36:15,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:15,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:15,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:15,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:15,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362754147] [2020-10-09 10:36:15,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:15,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:15,298 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-09 10:36:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:15,439 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-09 10:36:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:15,440 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:15,441 INFO L225 Difference]: With dead ends: 167 [2020-10-09 10:36:15,441 INFO L226 Difference]: Without dead ends: 164 [2020-10-09 10:36:15,442 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-09 10:36:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-09 10:36:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-09 10:36:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-09 10:36:15,445 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-09 10:36:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:15,445 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-09 10:36:15,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-09 10:36:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:15,446 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:15,446 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:15,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:15,647 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:15,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1766003003, now seen corresponding path program 20 times [2020-10-09 10:36:15,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:15,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17962594] [2020-10-09 10:36:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17962594] [2020-10-09 10:36:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396006690] [2020-10-09 10:36:15,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:15,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:15,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:15,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:15,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:15,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:15,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:15,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659468812] [2020-10-09 10:36:15,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:15,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:15,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:15,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:15,890 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-09 10:36:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:16,099 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-09 10:36:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:16,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:16,101 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:36:16,102 INFO L226 Difference]: Without dead ends: 170 [2020-10-09 10:36:16,102 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-09 10:36:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-09 10:36:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-09 10:36:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-09 10:36:16,105 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-09 10:36:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:16,106 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-09 10:36:16,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-09 10:36:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:16,106 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:16,106 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:16,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:16,317 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:16,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1530333459, now seen corresponding path program 50 times [2020-10-09 10:36:16,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:16,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362623471] [2020-10-09 10:36:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362623471] [2020-10-09 10:36:16,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648039938] [2020-10-09 10:36:16,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:16,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:16,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:16,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:16,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909719862] [2020-10-09 10:36:16,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:16,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:16,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:16,618 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-09 10:36:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:16,675 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-09 10:36:16,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:36:16,675 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:16,677 INFO L225 Difference]: With dead ends: 163 [2020-10-09 10:36:16,677 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:36:16,677 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:36:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-09 10:36:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-09 10:36:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-09 10:36:16,681 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-09 10:36:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:16,681 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-09 10:36:16,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-09 10:36:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:16,681 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:16,681 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:16,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-09 10:36:16,882 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1530332498, now seen corresponding path program 51 times [2020-10-09 10:36:16,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:16,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963477322] [2020-10-09 10:36:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963477322] [2020-10-09 10:36:16,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42534372] [2020-10-09 10:36:16,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:17,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:17,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:17,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:17,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:17,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:17,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382338738] [2020-10-09 10:36:17,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:17,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:17,151 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:17,304 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-09 10:36:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:17,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:17,306 INFO L225 Difference]: With dead ends: 172 [2020-10-09 10:36:17,306 INFO L226 Difference]: Without dead ends: 170 [2020-10-09 10:36:17,306 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-09 10:36:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-09 10:36:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-09 10:36:17,309 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-09 10:36:17,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:17,310 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-09 10:36:17,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-09 10:36:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:17,310 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:17,311 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:17,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:17,519 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1530303668, now seen corresponding path program 52 times [2020-10-09 10:36:17,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:17,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669567858] [2020-10-09 10:36:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:17,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669567858] [2020-10-09 10:36:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153084266] [2020-10-09 10:36:17,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:17,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:17,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:17,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:17,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:17,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:17,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:17,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917954690] [2020-10-09 10:36:17,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:17,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:17,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:17,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:17,892 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-09 10:36:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:18,099 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-09 10:36:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:18,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:18,102 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:18,102 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:18,102 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-09 10:36:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-09 10:36:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-09 10:36:18,105 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-09 10:36:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:18,105 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-09 10:36:18,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-09 10:36:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:18,105 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:18,106 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:18,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-09 10:36:18,312 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:18,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1529409938, now seen corresponding path program 53 times [2020-10-09 10:36:18,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:18,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095281323] [2020-10-09 10:36:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095281323] [2020-10-09 10:36:18,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182084287] [2020-10-09 10:36:18,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:18,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:18,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:18,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:18,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:18,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:18,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843133962] [2020-10-09 10:36:18,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:18,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:18,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:18,584 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-09 10:36:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:18,841 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-09 10:36:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:18,842 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:18,844 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:18,844 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:18,844 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-09 10:36:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-09 10:36:18,849 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-09 10:36:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:18,850 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-09 10:36:18,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-09 10:36:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:18,851 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:18,851 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:19,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-09 10:36:19,052 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:19,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1529408977, now seen corresponding path program 54 times [2020-10-09 10:36:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561689492] [2020-10-09 10:36:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:19,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561689492] [2020-10-09 10:36:19,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010084071] [2020-10-09 10:36:19,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:19,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:19,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:19,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:19,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:19,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:19,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:19,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864305607] [2020-10-09 10:36:19,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:19,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:19,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:19,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:19,474 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-09 10:36:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:19,802 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-09 10:36:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:19,802 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:19,804 INFO L225 Difference]: With dead ends: 184 [2020-10-09 10:36:19,804 INFO L226 Difference]: Without dead ends: 182 [2020-10-09 10:36:19,804 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-09 10:36:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-09 10:36:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-09 10:36:19,807 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-09 10:36:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:19,808 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-09 10:36:19,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-09 10:36:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:19,808 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:19,809 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:20,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-09 10:36:20,017 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:20,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1529380147, now seen corresponding path program 55 times [2020-10-09 10:36:20,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:20,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71267087] [2020-10-09 10:36:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71267087] [2020-10-09 10:36:20,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427125633] [2020-10-09 10:36:20,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:20,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:20,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:20,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838234999] [2020-10-09 10:36:20,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:20,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:20,290 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-09 10:36:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:20,533 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-09 10:36:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:20,533 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:20,535 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:20,535 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:20,535 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-09 10:36:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-09 10:36:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-09 10:36:20,538 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-09 10:36:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:20,538 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-09 10:36:20,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-09 10:36:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:20,539 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:20,539 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:20,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,747 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:20,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1501704308, now seen corresponding path program 56 times [2020-10-09 10:36:20,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:20,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457973896] [2020-10-09 10:36:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457973896] [2020-10-09 10:36:20,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074145371] [2020-10-09 10:36:20,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:20,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:20,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:20,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:21,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:21,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:21,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599109517] [2020-10-09 10:36:21,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:21,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:21,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:21,013 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-09 10:36:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:21,187 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-09 10:36:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:21,187 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:21,189 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:36:21,189 INFO L226 Difference]: Without dead ends: 174 [2020-10-09 10:36:21,189 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-09 10:36:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-09 10:36:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:36:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-09 10:36:21,192 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-09 10:36:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:21,192 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-09 10:36:21,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-09 10:36:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:21,193 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:21,193 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:21,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:21,394 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:21,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1501703347, now seen corresponding path program 57 times [2020-10-09 10:36:21,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:21,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942460590] [2020-10-09 10:36:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942460590] [2020-10-09 10:36:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780051705] [2020-10-09 10:36:21,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:21,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:21,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:21,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:21,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:21,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:21,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:21,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268895129] [2020-10-09 10:36:21,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:21,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:21,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:21,670 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:21,898 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-09 10:36:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:21,898 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:21,900 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:21,900 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:21,900 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-09 10:36:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-09 10:36:21,903 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-09 10:36:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:21,904 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-09 10:36:21,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-09 10:36:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:21,904 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:21,904 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:22,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:22,112 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1501674517, now seen corresponding path program 58 times [2020-10-09 10:36:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:22,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380358738] [2020-10-09 10:36:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:22,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380358738] [2020-10-09 10:36:22,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369573626] [2020-10-09 10:36:22,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:22,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:22,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:22,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:22,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:22,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:22,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569804850] [2020-10-09 10:36:22,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:22,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:22,401 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-09 10:36:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:22,618 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-09 10:36:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:22,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:22,620 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:22,620 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:22,621 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-09 10:36:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-09 10:36:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-09 10:36:22,624 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-09 10:36:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:22,625 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-09 10:36:22,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-09 10:36:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:22,625 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:22,625 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:22,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:22,826 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1043911547, now seen corresponding path program 59 times [2020-10-09 10:36:22,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:22,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604893202] [2020-10-09 10:36:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604893202] [2020-10-09 10:36:22,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895851132] [2020-10-09 10:36:22,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:23,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:23,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:23,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:23,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:23,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:23,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698952766] [2020-10-09 10:36:23,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:23,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:23,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:23,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:23,169 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-09 10:36:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:23,238 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-09 10:36:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:23,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:23,240 INFO L225 Difference]: With dead ends: 182 [2020-10-09 10:36:23,240 INFO L226 Difference]: Without dead ends: 180 [2020-10-09 10:36:23,240 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-09 10:36:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-09 10:36:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:36:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-09 10:36:23,244 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-09 10:36:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:23,244 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-09 10:36:23,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-09 10:36:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:23,245 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:23,245 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:23,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-09 10:36:23,446 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1043912508, now seen corresponding path program 60 times [2020-10-09 10:36:23,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:23,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020461404] [2020-10-09 10:36:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020461404] [2020-10-09 10:36:23,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554004279] [2020-10-09 10:36:23,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:23,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:23,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:23,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:23,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:23,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:23,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185436865] [2020-10-09 10:36:23,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:23,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:23,753 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-09 10:36:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:23,947 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-09 10:36:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:23,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:23,949 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:23,950 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:23,950 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-09 10:36:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-09 10:36:23,953 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-09 10:36:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:23,953 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-09 10:36:23,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-09 10:36:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:23,954 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:23,954 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:24,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:24,155 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:24,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1043941338, now seen corresponding path program 61 times [2020-10-09 10:36:24,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:24,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490296529] [2020-10-09 10:36:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:24,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490296529] [2020-10-09 10:36:24,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225425809] [2020-10-09 10:36:24,256 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:24,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:24,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:24,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:24,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225103967] [2020-10-09 10:36:24,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:24,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:24,947 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:25,198 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-09 10:36:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:25,199 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:25,200 INFO L225 Difference]: With dead ends: 191 [2020-10-09 10:36:25,201 INFO L226 Difference]: Without dead ends: 189 [2020-10-09 10:36:25,201 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-09 10:36:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-09 10:36:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-09 10:36:25,205 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-09 10:36:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:25,205 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-09 10:36:25,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-09 10:36:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:25,205 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:25,205 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:25,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:25,409 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1044835068, now seen corresponding path program 62 times [2020-10-09 10:36:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:25,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38195076] [2020-10-09 10:36:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:25,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38195076] [2020-10-09 10:36:25,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648548350] [2020-10-09 10:36:25,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:25,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:25,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:25,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:25,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:25,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:25,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:25,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78194809] [2020-10-09 10:36:25,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:25,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:25,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:25,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:25,674 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-09 10:36:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:25,931 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-09 10:36:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:25,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:25,934 INFO L225 Difference]: With dead ends: 187 [2020-10-09 10:36:25,934 INFO L226 Difference]: Without dead ends: 185 [2020-10-09 10:36:25,935 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-09 10:36:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-09 10:36:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-09 10:36:25,939 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-09 10:36:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:25,939 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-09 10:36:25,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-09 10:36:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:25,939 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:25,940 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:26,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-09 10:36:26,149 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:26,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1044836029, now seen corresponding path program 63 times [2020-10-09 10:36:26,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:26,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626223012] [2020-10-09 10:36:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:26,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626223012] [2020-10-09 10:36:26,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91415895] [2020-10-09 10:36:26,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:26,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:26,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:26,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:26,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:26,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:26,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:26,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674810827] [2020-10-09 10:36:26,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:26,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:26,450 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:26,735 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-09 10:36:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:26,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:26,738 INFO L225 Difference]: With dead ends: 198 [2020-10-09 10:36:26,738 INFO L226 Difference]: Without dead ends: 196 [2020-10-09 10:36:26,738 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-09 10:36:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-09 10:36:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-09 10:36:26,742 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-09 10:36:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:26,743 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-09 10:36:26,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-09 10:36:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:26,743 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:26,743 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:26,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:26,944 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864859, now seen corresponding path program 64 times [2020-10-09 10:36:26,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:26,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799390465] [2020-10-09 10:36:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:27,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799390465] [2020-10-09 10:36:27,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305214788] [2020-10-09 10:36:27,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:27,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:27,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:27,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:27,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:27,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:27,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867727080] [2020-10-09 10:36:27,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:27,244 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-09 10:36:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:27,549 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-09 10:36:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:27,550 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:27,552 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:36:27,552 INFO L226 Difference]: Without dead ends: 187 [2020-10-09 10:36:27,552 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-09 10:36:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-09 10:36:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:36:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-09 10:36:27,556 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-09 10:36:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:27,556 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-09 10:36:27,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-09 10:36:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:27,557 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:27,557 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:27,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-09 10:36:27,758 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:27,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141037, now seen corresponding path program 65 times [2020-10-09 10:36:27,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:27,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783671459] [2020-10-09 10:36:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:27,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783671459] [2020-10-09 10:36:27,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575441153] [2020-10-09 10:36:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:27,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:27,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:27,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:27,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:28,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:28,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:28,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249322022] [2020-10-09 10:36:28,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:28,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:28,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:28,061 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-09 10:36:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:28,168 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-09 10:36:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:28,168 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:28,170 INFO L225 Difference]: With dead ends: 178 [2020-10-09 10:36:28,170 INFO L226 Difference]: Without dead ends: 176 [2020-10-09 10:36:28,170 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:36:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-09 10:36:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-09 10:36:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-09 10:36:28,173 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-09 10:36:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:28,174 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-09 10:36:28,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-09 10:36:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:28,174 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:28,174 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:28,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:28,375 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141998, now seen corresponding path program 66 times [2020-10-09 10:36:28,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:28,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058005779] [2020-10-09 10:36:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:28,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058005779] [2020-10-09 10:36:28,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976158972] [2020-10-09 10:36:28,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:28,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:28,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:28,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:28,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:28,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:28,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24327912] [2020-10-09 10:36:28,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:28,671 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-09 10:36:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:28,893 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-09 10:36:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:28,894 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:28,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:28,896 INFO L225 Difference]: With dead ends: 193 [2020-10-09 10:36:28,896 INFO L226 Difference]: Without dead ends: 191 [2020-10-09 10:36:28,896 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-09 10:36:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-09 10:36:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-09 10:36:28,899 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-09 10:36:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:28,899 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-09 10:36:28,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-09 10:36:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:28,900 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:28,900 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:29,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-09 10:36:29,101 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1681170828, now seen corresponding path program 67 times [2020-10-09 10:36:29,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:29,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701952658] [2020-10-09 10:36:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:29,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701952658] [2020-10-09 10:36:29,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125188291] [2020-10-09 10:36:29,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:29,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:29,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:29,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:29,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:29,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910296053] [2020-10-09 10:36:29,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:29,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:29,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:29,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:29,437 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-09 10:36:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:29,731 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-09 10:36:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:29,732 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:29,733 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:36:29,733 INFO L226 Difference]: Without dead ends: 193 [2020-10-09 10:36:29,734 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-09 10:36:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-09 10:36:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-09 10:36:29,737 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-09 10:36:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:29,737 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-09 10:36:29,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-09 10:36:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:29,738 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:29,738 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:29,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:29,945 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1701696827, now seen corresponding path program 68 times [2020-10-09 10:36:29,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:29,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740328716] [2020-10-09 10:36:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740328716] [2020-10-09 10:36:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015528663] [2020-10-09 10:36:30,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:30,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:30,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:30,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:30,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:30,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:30,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:30,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113186507] [2020-10-09 10:36:30,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:30,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:30,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:30,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:30,242 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-09 10:36:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:30,376 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-09 10:36:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:30,376 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:30,378 INFO L225 Difference]: With dead ends: 174 [2020-10-09 10:36:30,378 INFO L226 Difference]: Without dead ends: 172 [2020-10-09 10:36:30,378 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-09 10:36:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-09 10:36:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-09 10:36:30,381 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-09 10:36:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:30,381 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-09 10:36:30,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-09 10:36:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:30,382 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:30,382 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:30,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-09 10:36:30,583 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:30,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1701697788, now seen corresponding path program 69 times [2020-10-09 10:36:30,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:30,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300713678] [2020-10-09 10:36:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:30,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300713678] [2020-10-09 10:36:30,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998894008] [2020-10-09 10:36:30,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:30,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:30,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:30,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:30,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:30,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:30,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:30,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204509798] [2020-10-09 10:36:30,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:30,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:30,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:30,874 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-09 10:36:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:31,141 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-09 10:36:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:31,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:31,144 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:36:31,144 INFO L226 Difference]: Without dead ends: 187 [2020-10-09 10:36:31,144 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-09 10:36:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-09 10:36:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-09 10:36:31,147 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-09 10:36:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:31,147 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-09 10:36:31,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-09 10:36:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:31,148 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:31,148 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:31,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:31,349 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1702359917, now seen corresponding path program 70 times [2020-10-09 10:36:31,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:31,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629101382] [2020-10-09 10:36:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:31,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629101382] [2020-10-09 10:36:31,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128267619] [2020-10-09 10:36:31,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:31,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:31,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:31,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:31,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:31,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:31,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:31,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304911162] [2020-10-09 10:36:31,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:31,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:31,624 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-09 10:36:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:31,780 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-09 10:36:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:31,781 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:31,782 INFO L225 Difference]: With dead ends: 175 [2020-10-09 10:36:31,782 INFO L226 Difference]: Without dead ends: 173 [2020-10-09 10:36:31,783 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-09 10:36:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-09 10:36:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:31,786 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:31,786 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:31,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:31,786 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:31,786 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:31,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:31,987 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:31,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1702382237, now seen corresponding path program 71 times [2020-10-09 10:36:31,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:31,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424914202] [2020-10-09 10:36:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:32,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424914202] [2020-10-09 10:36:32,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194692736] [2020-10-09 10:36:32,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:32,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:32,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:32,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:32,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:32,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:32,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:32,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:32,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192433076] [2020-10-09 10:36:32,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:32,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:32,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:32,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:32,270 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:32,655 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-09 10:36:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:32,656 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:32,658 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:36:32,658 INFO L226 Difference]: Without dead ends: 190 [2020-10-09 10:36:32,658 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:32,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-09 10:36:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-09 10:36:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-09 10:36:32,662 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-09 10:36:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:32,662 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-09 10:36:32,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-09 10:36:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:32,663 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:32,663 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:32,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:32,863 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1702389708, now seen corresponding path program 72 times [2020-10-09 10:36:32,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:32,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52529972] [2020-10-09 10:36:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:32,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52529972] [2020-10-09 10:36:32,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489729567] [2020-10-09 10:36:32,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:32,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:32,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:32,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:33,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:33,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:33,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384095497] [2020-10-09 10:36:33,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:33,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:33,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:33,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:33,153 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:33,443 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-09 10:36:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:33,444 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:33,446 INFO L225 Difference]: With dead ends: 187 [2020-10-09 10:36:33,446 INFO L226 Difference]: Without dead ends: 185 [2020-10-09 10:36:33,446 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-09 10:36:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-09 10:36:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:33,450 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:33,450 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:33,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:33,451 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:33,451 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:33,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:33,652 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1702411067, now seen corresponding path program 73 times [2020-10-09 10:36:33,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:33,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877973323] [2020-10-09 10:36:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:33,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877973323] [2020-10-09 10:36:33,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489087023] [2020-10-09 10:36:33,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:33,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:33,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:33,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:33,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:33,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:33,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961276835] [2020-10-09 10:36:33,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:33,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:33,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:33,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:33,950 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:34,457 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-09 10:36:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:34,458 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:34,460 INFO L225 Difference]: With dead ends: 212 [2020-10-09 10:36:34,460 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:36:34,460 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:36:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:36:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-09 10:36:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:34,463 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:34,463 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:34,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:34,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:34,464 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:34,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-09 10:36:34,676 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1702412028, now seen corresponding path program 74 times [2020-10-09 10:36:34,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:34,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341471567] [2020-10-09 10:36:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341471567] [2020-10-09 10:36:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896042836] [2020-10-09 10:36:34,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:34,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:34,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:34,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:34,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:34,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:34,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:34,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:34,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370830493] [2020-10-09 10:36:34,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:34,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:34,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:34,941 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:35,319 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-09 10:36:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:35,320 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:35,322 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:36:35,322 INFO L226 Difference]: Without dead ends: 197 [2020-10-09 10:36:35,322 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-09 10:36:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-09 10:36:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-09 10:36:35,325 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-09 10:36:35,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:35,325 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-09 10:36:35,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-09 10:36:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:35,326 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:35,326 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:35,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:35,526 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1702620348, now seen corresponding path program 75 times [2020-10-09 10:36:35,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:35,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341692674] [2020-10-09 10:36:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:35,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341692674] [2020-10-09 10:36:35,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673182101] [2020-10-09 10:36:35,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:35,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:35,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:35,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:35,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:35,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:35,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078836506] [2020-10-09 10:36:35,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:35,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:35,852 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-09 10:36:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:36,168 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-09 10:36:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:36,169 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:36,171 INFO L225 Difference]: With dead ends: 198 [2020-10-09 10:36:36,171 INFO L226 Difference]: Without dead ends: 196 [2020-10-09 10:36:36,171 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-09 10:36:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-09 10:36:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-09 10:36:36,175 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-09 10:36:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:36,175 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-09 10:36:36,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-09 10:36:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:36,176 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:36,176 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:36,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-09 10:36:36,385 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:36,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283438, now seen corresponding path program 76 times [2020-10-09 10:36:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:36,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376165495] [2020-10-09 10:36:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376165495] [2020-10-09 10:36:36,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238027093] [2020-10-09 10:36:36,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:36,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:36,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:36,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:36,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:36,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:36,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:36,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618767426] [2020-10-09 10:36:36,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:36,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:36,705 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:37,147 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-09 10:36:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:36:37,148 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:37,149 INFO L225 Difference]: With dead ends: 209 [2020-10-09 10:36:37,150 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:36:37,150 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:36:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:36:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-09 10:36:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:37,153 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:37,153 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:37,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:37,154 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:37,154 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:37,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-09 10:36:37,355 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:37,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1703304797, now seen corresponding path program 77 times [2020-10-09 10:36:37,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:37,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288066981] [2020-10-09 10:36:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:37,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288066981] [2020-10-09 10:36:37,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937333955] [2020-10-09 10:36:37,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:37,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:37,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:37,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:37,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:37,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:37,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:37,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:37,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966387727] [2020-10-09 10:36:37,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:37,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:37,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:37,652 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:38,230 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-09 10:36:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:38,231 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:38,232 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:36:38,233 INFO L226 Difference]: Without dead ends: 212 [2020-10-09 10:36:38,233 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:36:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-09 10:36:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-09 10:36:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-09 10:36:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-09 10:36:38,237 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-09 10:36:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:38,237 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-09 10:36:38,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-09 10:36:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:38,238 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:38,238 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:38,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-09 10:36:38,444 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1703305758, now seen corresponding path program 78 times [2020-10-09 10:36:38,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:38,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673632018] [2020-10-09 10:36:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:38,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673632018] [2020-10-09 10:36:38,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970288528] [2020-10-09 10:36:38,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:38,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:38,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:38,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:38,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:40,749 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:40,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:40,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:40,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894883752] [2020-10-09 10:36:40,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:40,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:40,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-09 10:36:40,793 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-09 10:36:45,116 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:36:49,337 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-09 10:36:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:49,802 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-09 10:36:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:36:49,803 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:49,803 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:36:49,804 INFO L226 Difference]: Without dead ends: 228 [2020-10-09 10:36:49,804 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-09 10:36:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-09 10:36:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-09 10:36:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-09 10:36:49,809 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-09 10:36:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:49,809 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-09 10:36:49,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-09 10:36:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:49,810 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:49,810 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:50,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-09 10:36:50,018 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1703334588, now seen corresponding path program 79 times [2020-10-09 10:36:50,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:50,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554504292] [2020-10-09 10:36:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:50,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554504292] [2020-10-09 10:36:50,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013513672] [2020-10-09 10:36:50,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:50,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:50,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:50,278 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:50,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:51,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:51,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 10:36:51,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983321834] [2020-10-09 10:36:51,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:36:51,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:51,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:36:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-10-09 10:36:51,406 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states. [2020-10-09 10:36:53,294 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 44 [2020-10-09 10:36:59,252 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 51 [2020-10-09 10:37:02,682 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-09 10:37:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:37,790 INFO L93 Difference]: Finished difference Result 236 states and 556 transitions. [2020-10-09 10:37:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:37:37,791 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-09 10:37:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:37,792 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:37:37,793 INFO L226 Difference]: Without dead ends: 231 [2020-10-09 10:37:37,793 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=311, Invalid=734, Unknown=11, NotChecked=0, Total=1056 [2020-10-09 10:37:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-09 10:37:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 140. [2020-10-09 10:37:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:37:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-09 10:37:37,797 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-09 10:37:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-09 10:37:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:37:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-09 10:37:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:37,798 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:37,798 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:37,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:37,998 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1709770188, now seen corresponding path program 80 times [2020-10-09 10:37:37,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:37,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097942997] [2020-10-09 10:37:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:38,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097942997] [2020-10-09 10:37:38,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146368845] [2020-10-09 10:37:38,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:38,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:37:38,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:38,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:38,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:38,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:38,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:38,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888181036] [2020-10-09 10:37:38,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:38,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:38,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:38,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:38,304 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-09 10:37:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:38,614 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-09 10:37:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:37:38,615 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:38,615 INFO L225 Difference]: With dead ends: 197 [2020-10-09 10:37:38,615 INFO L226 Difference]: Without dead ends: 195 [2020-10-09 10:37:38,616 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:37:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-09 10:37:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-09 10:37:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:37:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-09 10:37:38,621 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-09 10:37:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:38,621 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-09 10:37:38,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-09 10:37:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:38,624 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:38,624 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:38,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:38,834 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1709771149, now seen corresponding path program 81 times [2020-10-09 10:37:38,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:38,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341596587] [2020-10-09 10:37:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341596587] [2020-10-09 10:37:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047413652] [2020-10-09 10:37:38,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:38,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:37:38,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:38,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:38,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:39,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:39,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:39,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698242605] [2020-10-09 10:37:39,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:39,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:39,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:39,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:39,116 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-09 10:37:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:39,435 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-09 10:37:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:37:39,436 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:39,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:39,437 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:37:39,437 INFO L226 Difference]: Without dead ends: 200 [2020-10-09 10:37:39,437 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:37:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-09 10:37:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-09 10:37:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:37:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-09 10:37:39,440 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-09 10:37:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:39,441 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-09 10:37:39,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-09 10:37:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:39,441 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:39,441 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:39,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-09 10:37:39,644 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:39,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1709799979, now seen corresponding path program 82 times [2020-10-09 10:37:39,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:39,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562216774] [2020-10-09 10:37:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:39,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562216774] [2020-10-09 10:37:39,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904130577] [2020-10-09 10:37:39,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:39,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:37:39,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:39,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:39,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:39,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:39,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256187421] [2020-10-09 10:37:39,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:39,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:39,950 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-09 10:37:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:40,291 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-09 10:37:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:37:40,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:40,293 INFO L225 Difference]: With dead ends: 197 [2020-10-09 10:37:40,293 INFO L226 Difference]: Without dead ends: 195 [2020-10-09 10:37:40,293 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:37:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-09 10:37:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-09 10:37:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:37:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-09 10:37:40,296 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-09 10:37:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:40,296 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-09 10:37:40,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-09 10:37:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:40,296 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:40,297 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:40,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-09 10:37:40,497 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1730325978, now seen corresponding path program 83 times [2020-10-09 10:37:40,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:40,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241689038] [2020-10-09 10:37:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:40,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241689038] [2020-10-09 10:37:40,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821467635] [2020-10-09 10:37:40,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:40,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:37:40,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:40,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:40,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:40,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:40,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652729506] [2020-10-09 10:37:40,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:40,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:40,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:40,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:40,779 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-09 10:37:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:41,283 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-09 10:37:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:37:41,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:41,284 INFO L225 Difference]: With dead ends: 214 [2020-10-09 10:37:41,284 INFO L226 Difference]: Without dead ends: 212 [2020-10-09 10:37:41,285 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:37:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-09 10:37:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-09 10:37:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:37:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-09 10:37:41,289 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-09 10:37:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:41,289 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-09 10:37:41,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-09 10:37:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:41,290 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:41,290 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:41,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-09 10:37:41,494 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1730326939, now seen corresponding path program 84 times [2020-10-09 10:37:41,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:41,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509917914] [2020-10-09 10:37:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:41,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509917914] [2020-10-09 10:37:41,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264113019] [2020-10-09 10:37:41,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:41,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:37:41,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:41,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:41,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:41,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:41,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:41,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790097587] [2020-10-09 10:37:41,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:41,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:41,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:41,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:41,915 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-09 10:37:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:42,672 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-09 10:37:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:37:42,673 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:42,674 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:37:42,675 INFO L226 Difference]: Without dead ends: 215 [2020-10-09 10:37:42,675 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:37:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-09 10:37:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-09 10:37:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:37:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-09 10:37:42,681 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-09 10:37:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:42,681 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-09 10:37:42,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:42,682 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-09 10:37:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:42,683 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:42,683 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:42,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:42,896 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1730989068, now seen corresponding path program 85 times [2020-10-09 10:37:42,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:42,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867767138] [2020-10-09 10:37:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867767138] [2020-10-09 10:37:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340447959] [2020-10-09 10:37:43,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:43,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:43,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:43,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:43,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:43,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711979250] [2020-10-09 10:37:43,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:43,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:43,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:43,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:43,349 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-09 10:37:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:43,842 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-09 10:37:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:37:43,842 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:43,843 INFO L225 Difference]: With dead ends: 211 [2020-10-09 10:37:43,843 INFO L226 Difference]: Without dead ends: 209 [2020-10-09 10:37:43,844 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:37:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-09 10:37:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-09 10:37:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:37:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:37:43,847 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:37:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:43,847 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:37:43,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:37:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:43,850 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:43,851 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:44,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:44,060 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1731010427, now seen corresponding path program 86 times [2020-10-09 10:37:44,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:44,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012389693] [2020-10-09 10:37:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:44,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012389693] [2020-10-09 10:37:44,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338663642] [2020-10-09 10:37:44,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:44,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:37:44,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:44,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:44,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:44,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:37:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:44,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:44,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:44,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952931062] [2020-10-09 10:37:44,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:44,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:44,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:44,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:44,347 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:37:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:44,923 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-09 10:37:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:37:44,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:44,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:44,924 INFO L225 Difference]: With dead ends: 211 [2020-10-09 10:37:44,925 INFO L226 Difference]: Without dead ends: 206 [2020-10-09 10:37:44,925 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:37:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-09 10:37:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-09 10:37:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:37:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:37:44,928 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:37:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:44,928 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:37:44,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:37:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:44,929 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:44,929 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:45,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-09 10:37:45,130 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:45,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1731011388, now seen corresponding path program 87 times [2020-10-09 10:37:45,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:45,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831350877] [2020-10-09 10:37:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:45,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831350877] [2020-10-09 10:37:45,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463361941] [2020-10-09 10:37:45,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:45,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:37:45,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:45,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:45,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:37:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:45,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:45,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:45,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162370506] [2020-10-09 10:37:45,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:45,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:45,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:45,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:45,444 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:37:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:46,162 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-09 10:37:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:37:46,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:46,164 INFO L225 Difference]: With dead ends: 227 [2020-10-09 10:37:46,164 INFO L226 Difference]: Without dead ends: 222 [2020-10-09 10:37:46,165 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:37:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-09 10:37:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-09 10:37:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:37:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-09 10:37:46,169 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-09 10:37:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:46,169 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-09 10:37:46,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-09 10:37:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:46,170 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:46,170 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:46,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-09 10:37:46,371 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1731018859, now seen corresponding path program 88 times [2020-10-09 10:37:46,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:46,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077740792] [2020-10-09 10:37:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077740792] [2020-10-09 10:37:46,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688386354] [2020-10-09 10:37:46,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:46,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:37:46,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:46,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:46,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363783799] [2020-10-09 10:37:46,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:46,653 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-09 10:37:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:47,229 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-09 10:37:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:37:47,233 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:47,234 INFO L225 Difference]: With dead ends: 221 [2020-10-09 10:37:47,234 INFO L226 Difference]: Without dead ends: 219 [2020-10-09 10:37:47,234 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:37:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-09 10:37:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-09 10:37:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:37:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:37:47,237 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:37:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:47,237 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:37:47,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:37:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:47,237 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:47,237 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:47,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:47,442 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1731040218, now seen corresponding path program 89 times [2020-10-09 10:37:47,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:47,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753905240] [2020-10-09 10:37:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:47,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753905240] [2020-10-09 10:37:47,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211035431] [2020-10-09 10:37:47,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:47,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:37:47,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:47,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:47,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:47,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:37:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:47,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:47,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:47,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146408854] [2020-10-09 10:37:47,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:47,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:47,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:47,715 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:37:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:48,426 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-09 10:37:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:37:48,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:48,428 INFO L225 Difference]: With dead ends: 240 [2020-10-09 10:37:48,428 INFO L226 Difference]: Without dead ends: 232 [2020-10-09 10:37:48,429 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:37:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-09 10:37:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-09 10:37:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-09 10:37:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-09 10:37:48,432 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-09 10:37:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:48,432 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-09 10:37:48,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-09 10:37:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:48,432 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:48,432 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:48,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-09 10:37:48,633 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:48,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041179, now seen corresponding path program 90 times [2020-10-09 10:37:48,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:48,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581636145] [2020-10-09 10:37:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:48,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581636145] [2020-10-09 10:37:48,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051439454] [2020-10-09 10:37:48,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:48,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:37:48,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:48,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:48,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:48,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:37:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:48,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:48,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:48,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357284350] [2020-10-09 10:37:48,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:48,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:48,898 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-09 10:37:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:49,642 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-09 10:37:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:37:49,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:49,644 INFO L225 Difference]: With dead ends: 238 [2020-10-09 10:37:49,644 INFO L226 Difference]: Without dead ends: 230 [2020-10-09 10:37:49,644 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:37:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-09 10:37:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-09 10:37:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:37:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-09 10:37:49,648 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-09 10:37:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:49,648 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-09 10:37:49,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-09 10:37:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:49,649 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:49,649 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:49,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:49,858 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1731249499, now seen corresponding path program 91 times [2020-10-09 10:37:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:49,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026030055] [2020-10-09 10:37:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:49,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026030055] [2020-10-09 10:37:49,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717155352] [2020-10-09 10:37:49,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:50,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:50,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:50,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:50,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095051888] [2020-10-09 10:37:50,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:50,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:50,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:50,279 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-09 10:37:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:50,744 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-09 10:37:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:37:50,744 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:50,745 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:37:50,745 INFO L226 Difference]: Without dead ends: 193 [2020-10-09 10:37:50,746 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:37:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-09 10:37:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-09 10:37:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:37:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-09 10:37:50,750 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-09 10:37:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:50,751 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-09 10:37:50,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-09 10:37:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:50,752 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:50,752 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:50,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-09 10:37:50,964 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1731912589, now seen corresponding path program 92 times [2020-10-09 10:37:50,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:50,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302181545] [2020-10-09 10:37:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:51,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302181545] [2020-10-09 10:37:51,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541454963] [2020-10-09 10:37:51,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:51,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:37:51,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:51,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:51,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:37:51,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705712191] [2020-10-09 10:37:51,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:37:51,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:37:51,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:37:51,300 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-09 10:37:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:37:51,868 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-09 10:37:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:37:51,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:37:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:37:51,870 INFO L225 Difference]: With dead ends: 206 [2020-10-09 10:37:51,870 INFO L226 Difference]: Without dead ends: 204 [2020-10-09 10:37:51,870 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:37:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-09 10:37:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-09 10:37:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:37:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-09 10:37:51,873 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-09 10:37:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:37:51,873 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-09 10:37:51,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:37:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-09 10:37:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:37:51,874 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:37:51,874 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:37:52,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:52,075 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:37:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:37:52,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1731934909, now seen corresponding path program 93 times [2020-10-09 10:37:52,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:37:52,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47162542] [2020-10-09 10:37:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:37:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:37:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:52,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47162542] [2020-10-09 10:37:52,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698367992] [2020-10-09 10:37:52,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:37:52,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:37:52,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:37:52,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:37:52,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:37:52,398 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:37:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:37:53,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:37:53,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 10:37:53,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239699840] [2020-10-09 10:37:53,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:37:53,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:37:53,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:37:53,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-09 10:37:53,821 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-09 10:37:56,318 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-09 10:38:19,079 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-09 10:38:57,130 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-09 10:39:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:14,677 INFO L93 Difference]: Finished difference Result 260 states and 609 transitions. [2020-10-09 10:39:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:39:14,678 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-09 10:39:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:14,680 INFO L225 Difference]: With dead ends: 260 [2020-10-09 10:39:14,680 INFO L226 Difference]: Without dead ends: 255 [2020-10-09 10:39:14,681 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=388, Invalid=934, Unknown=10, NotChecked=0, Total=1332 [2020-10-09 10:39:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-09 10:39:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 139. [2020-10-09 10:39:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:39:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-09 10:39:14,684 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-09 10:39:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:14,685 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-09 10:39:14,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:39:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-09 10:39:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:14,685 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:14,685 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:14,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-09 10:39:14,898 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:14,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1931415228, now seen corresponding path program 94 times [2020-10-09 10:39:14,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:14,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685276865] [2020-10-09 10:39:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685276865] [2020-10-09 10:39:15,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321671317] [2020-10-09 10:39:15,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:15,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:15,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:15,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:15,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:15,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901557221] [2020-10-09 10:39:15,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:15,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:15,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:15,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:15,204 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-09 10:39:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:15,460 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-09 10:39:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:15,461 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:15,462 INFO L225 Difference]: With dead ends: 194 [2020-10-09 10:39:15,462 INFO L226 Difference]: Without dead ends: 192 [2020-10-09 10:39:15,462 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:39:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-09 10:39:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-09 10:39:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:39:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-09 10:39:15,465 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-09 10:39:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:15,465 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-09 10:39:15,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-09 10:39:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:15,465 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:15,465 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:15,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:15,666 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:15,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1931416189, now seen corresponding path program 95 times [2020-10-09 10:39:15,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:15,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966877474] [2020-10-09 10:39:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966877474] [2020-10-09 10:39:15,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892927625] [2020-10-09 10:39:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:15,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:15,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:15,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:15,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:15,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:15,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304573499] [2020-10-09 10:39:15,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:15,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:15,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:15,981 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-09 10:39:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:16,351 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-09 10:39:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:39:16,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:16,353 INFO L225 Difference]: With dead ends: 205 [2020-10-09 10:39:16,353 INFO L226 Difference]: Without dead ends: 203 [2020-10-09 10:39:16,353 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:39:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-09 10:39:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-09 10:39:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:39:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-09 10:39:16,357 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-09 10:39:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:16,357 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-09 10:39:16,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-09 10:39:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:16,358 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:16,358 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:16,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:16,567 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1931445019, now seen corresponding path program 96 times [2020-10-09 10:39:16,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:16,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420924850] [2020-10-09 10:39:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:16,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420924850] [2020-10-09 10:39:16,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432795642] [2020-10-09 10:39:16,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:16,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:16,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:16,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:16,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:16,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:16,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:16,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270335843] [2020-10-09 10:39:16,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:16,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:16,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:16,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:16,889 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-09 10:39:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:17,249 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-09 10:39:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:39:17,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:17,251 INFO L225 Difference]: With dead ends: 201 [2020-10-09 10:39:17,251 INFO L226 Difference]: Without dead ends: 199 [2020-10-09 10:39:17,251 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:39:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-09 10:39:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-09 10:39:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:39:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-09 10:39:17,254 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-09 10:39:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:17,254 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-09 10:39:17,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-09 10:39:17,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:17,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:17,255 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:17,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:17,456 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1726322578, now seen corresponding path program 97 times [2020-10-09 10:39:17,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:17,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478135465] [2020-10-09 10:39:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:17,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478135465] [2020-10-09 10:39:17,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336858280] [2020-10-09 10:39:17,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:17,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:17,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:17,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:17,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:17,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632623609] [2020-10-09 10:39:17,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:17,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:17,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:17,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:17,799 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-09 10:39:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:18,086 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-09 10:39:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:18,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:18,087 INFO L225 Difference]: With dead ends: 194 [2020-10-09 10:39:18,087 INFO L226 Difference]: Without dead ends: 192 [2020-10-09 10:39:18,088 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:39:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-09 10:39:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-09 10:39:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:39:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-09 10:39:18,090 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-09 10:39:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:18,090 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-09 10:39:18,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-09 10:39:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:18,091 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:18,091 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:18,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-09 10:39:18,293 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1726321617, now seen corresponding path program 98 times [2020-10-09 10:39:18,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:18,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299124973] [2020-10-09 10:39:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299124973] [2020-10-09 10:39:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997953096] [2020-10-09 10:39:18,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:18,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:18,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:18,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:18,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:18,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:18,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445171215] [2020-10-09 10:39:18,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:18,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:18,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:18,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:18,700 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-09 10:39:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:19,122 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-09 10:39:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:39:19,123 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:19,124 INFO L225 Difference]: With dead ends: 209 [2020-10-09 10:39:19,124 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:39:19,124 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:39:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-09 10:39:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:39:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-09 10:39:19,128 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-09 10:39:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:19,128 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-09 10:39:19,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-09 10:39:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:19,129 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:19,129 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:19,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:19,330 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1726292787, now seen corresponding path program 99 times [2020-10-09 10:39:19,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:19,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157670569] [2020-10-09 10:39:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:19,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157670569] [2020-10-09 10:39:19,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249334126] [2020-10-09 10:39:19,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:19,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:19,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:19,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:19,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:19,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:19,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:19,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693425405] [2020-10-09 10:39:19,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:19,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:19,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:19,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:19,651 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-09 10:39:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:20,038 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-09 10:39:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:39:20,039 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:20,040 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:39:20,040 INFO L226 Difference]: Without dead ends: 200 [2020-10-09 10:39:20,041 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-09 10:39:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-09 10:39:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:39:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-09 10:39:20,044 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-09 10:39:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:20,044 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-09 10:39:20,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-09 10:39:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:20,044 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:20,044 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:20,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-09 10:39:20,245 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:20,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1705766788, now seen corresponding path program 100 times [2020-10-09 10:39:20,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:20,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355791792] [2020-10-09 10:39:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:20,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355791792] [2020-10-09 10:39:20,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762311918] [2020-10-09 10:39:20,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:20,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:20,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:20,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:20,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:20,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:20,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:20,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90386161] [2020-10-09 10:39:20,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:20,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:20,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:20,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:20,555 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-09 10:39:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:20,928 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-09 10:39:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:20,929 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:20,929 INFO L225 Difference]: With dead ends: 201 [2020-10-09 10:39:20,929 INFO L226 Difference]: Without dead ends: 199 [2020-10-09 10:39:20,930 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:20,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-09 10:39:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-09 10:39:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:39:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-09 10:39:20,933 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-09 10:39:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:20,933 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-09 10:39:20,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-09 10:39:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:20,934 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:20,934 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:21,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-09 10:39:21,136 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:21,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1705765827, now seen corresponding path program 101 times [2020-10-09 10:39:21,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:21,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264144831] [2020-10-09 10:39:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:21,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264144831] [2020-10-09 10:39:21,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715800281] [2020-10-09 10:39:21,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:21,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:21,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:21,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:21,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:21,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:21,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:21,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154946291] [2020-10-09 10:39:21,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:21,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:21,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:21,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:21,451 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-09 10:39:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:21,980 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-09 10:39:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:39:21,981 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:21,982 INFO L225 Difference]: With dead ends: 215 [2020-10-09 10:39:21,982 INFO L226 Difference]: Without dead ends: 213 [2020-10-09 10:39:21,983 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:39:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-09 10:39:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-09 10:39:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:39:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-09 10:39:21,985 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-09 10:39:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:21,985 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-09 10:39:21,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-09 10:39:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:21,988 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:21,988 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:22,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:22,191 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:22,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1705103698, now seen corresponding path program 102 times [2020-10-09 10:39:22,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:22,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791730979] [2020-10-09 10:39:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:22,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791730979] [2020-10-09 10:39:22,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298080921] [2020-10-09 10:39:22,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:22,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:22,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:22,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:22,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:22,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:22,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028913371] [2020-10-09 10:39:22,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:22,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:22,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:22,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:22,480 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-09 10:39:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:22,904 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-09 10:39:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:22,904 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:22,905 INFO L225 Difference]: With dead ends: 196 [2020-10-09 10:39:22,905 INFO L226 Difference]: Without dead ends: 194 [2020-10-09 10:39:22,906 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-09 10:39:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-09 10:39:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:39:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:39:22,909 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:39:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:22,909 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:39:22,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:39:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:22,910 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:22,910 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:23,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:23,119 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1705082339, now seen corresponding path program 103 times [2020-10-09 10:39:23,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:23,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78834854] [2020-10-09 10:39:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:23,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78834854] [2020-10-09 10:39:23,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656501032] [2020-10-09 10:39:23,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:23,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:23,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:23,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:23,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:23,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:23,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668803241] [2020-10-09 10:39:23,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:23,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:23,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:23,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:23,404 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:39:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:23,748 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-09 10:39:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:23,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:23,750 INFO L225 Difference]: With dead ends: 191 [2020-10-09 10:39:23,750 INFO L226 Difference]: Without dead ends: 186 [2020-10-09 10:39:23,750 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-09 10:39:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-09 10:39:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:39:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:39:23,754 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:39:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:23,754 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:39:23,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:39:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:23,754 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:23,755 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:23,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-09 10:39:23,958 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:23,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1705081378, now seen corresponding path program 104 times [2020-10-09 10:39:23,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:23,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106234470] [2020-10-09 10:39:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:24,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106234470] [2020-10-09 10:39:24,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701099272] [2020-10-09 10:39:24,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:24,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:24,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:24,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:24,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:24,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:24,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:24,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:24,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446433264] [2020-10-09 10:39:24,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:24,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:24,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:24,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:24,283 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:39:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:24,939 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-09 10:39:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:39:24,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:24,941 INFO L225 Difference]: With dead ends: 232 [2020-10-09 10:39:24,941 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:39:24,942 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:39:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:39:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-09 10:39:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:39:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-09 10:39:24,945 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-09 10:39:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:24,945 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-09 10:39:24,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-09 10:39:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:24,946 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:24,946 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:25,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:25,157 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1705073907, now seen corresponding path program 105 times [2020-10-09 10:39:25,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:25,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278947117] [2020-10-09 10:39:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:25,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278947117] [2020-10-09 10:39:25,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889294130] [2020-10-09 10:39:25,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:25,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:25,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:25,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:25,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:25,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:25,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:25,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587374820] [2020-10-09 10:39:25,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:25,457 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-09 10:39:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:26,135 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-09 10:39:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:39:26,136 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:26,137 INFO L225 Difference]: With dead ends: 222 [2020-10-09 10:39:26,137 INFO L226 Difference]: Without dead ends: 220 [2020-10-09 10:39:26,137 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:39:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-09 10:39:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-09 10:39:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:39:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:39:26,140 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:39:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:26,141 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:39:26,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:39:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:26,141 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:26,141 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:26,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:26,342 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1705052548, now seen corresponding path program 106 times [2020-10-09 10:39:26,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:26,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277581489] [2020-10-09 10:39:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277581489] [2020-10-09 10:39:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590369174] [2020-10-09 10:39:26,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:26,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:26,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:26,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:26,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:26,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:26,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:26,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050452564] [2020-10-09 10:39:26,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:26,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:26,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:26,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:26,664 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:39:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:27,552 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-09 10:39:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:39:27,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:27,553 INFO L225 Difference]: With dead ends: 254 [2020-10-09 10:39:27,553 INFO L226 Difference]: Without dead ends: 246 [2020-10-09 10:39:27,554 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:39:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-09 10:39:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-09 10:39:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-09 10:39:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-09 10:39:27,558 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-09 10:39:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:27,558 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-09 10:39:27,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-09 10:39:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:27,558 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:27,558 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:27,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:27,764 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1705051587, now seen corresponding path program 107 times [2020-10-09 10:39:27,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:27,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776667660] [2020-10-09 10:39:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:27,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776667660] [2020-10-09 10:39:27,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507231592] [2020-10-09 10:39:27,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:27,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:27,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:27,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:27,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:28,047 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:28,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:28,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:28,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242942] [2020-10-09 10:39:28,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:28,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:28,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:28,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:28,077 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-09 10:39:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:28,941 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-09 10:39:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:39:28,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:28,944 INFO L225 Difference]: With dead ends: 246 [2020-10-09 10:39:28,944 INFO L226 Difference]: Without dead ends: 238 [2020-10-09 10:39:28,944 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:39:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-09 10:39:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-09 10:39:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:39:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-09 10:39:28,948 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-09 10:39:28,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:28,948 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-09 10:39:28,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-09 10:39:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:28,949 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:28,949 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:29,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-09 10:39:29,160 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1704843267, now seen corresponding path program 108 times [2020-10-09 10:39:29,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:29,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075720933] [2020-10-09 10:39:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:29,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075720933] [2020-10-09 10:39:29,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832418459] [2020-10-09 10:39:29,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:29,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:29,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:29,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:29,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:29,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707076518] [2020-10-09 10:39:29,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:29,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:29,462 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-09 10:39:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:29,922 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-09 10:39:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:39:29,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:29,923 INFO L225 Difference]: With dead ends: 208 [2020-10-09 10:39:29,923 INFO L226 Difference]: Without dead ends: 206 [2020-10-09 10:39:29,924 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-09 10:39:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-09 10:39:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:39:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-09 10:39:29,926 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-09 10:39:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:29,926 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-09 10:39:29,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-09 10:39:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:29,927 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:29,927 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:30,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-09 10:39:30,130 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1704180177, now seen corresponding path program 109 times [2020-10-09 10:39:30,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:30,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33050912] [2020-10-09 10:39:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:30,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33050912] [2020-10-09 10:39:30,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759417961] [2020-10-09 10:39:30,227 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:30,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:30,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:30,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:30,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478291059] [2020-10-09 10:39:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:30,425 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-09 10:39:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:31,014 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-09 10:39:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:39:31,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:31,016 INFO L225 Difference]: With dead ends: 215 [2020-10-09 10:39:31,016 INFO L226 Difference]: Without dead ends: 213 [2020-10-09 10:39:31,016 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:39:31,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-09 10:39:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-09 10:39:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:39:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-09 10:39:31,020 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-09 10:39:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:31,020 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-09 10:39:31,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-09 10:39:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:31,020 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:31,020 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:31,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-09 10:39:31,221 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1704158818, now seen corresponding path program 110 times [2020-10-09 10:39:31,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:31,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118472628] [2020-10-09 10:39:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:31,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118472628] [2020-10-09 10:39:31,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599722288] [2020-10-09 10:39:31,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:31,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:31,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:31,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:31,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:31,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:31,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:31,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279116872] [2020-10-09 10:39:31,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:31,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:31,504 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-09 10:39:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:32,177 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-09 10:39:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:39:32,178 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:32,178 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:39:32,179 INFO L226 Difference]: Without dead ends: 228 [2020-10-09 10:39:32,179 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:39:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-09 10:39:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-09 10:39:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:39:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-09 10:39:32,182 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-09 10:39:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:32,182 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-09 10:39:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-09 10:39:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:32,182 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:32,182 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:32,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-09 10:39:32,383 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1704157857, now seen corresponding path program 111 times [2020-10-09 10:39:32,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:32,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979244374] [2020-10-09 10:39:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:32,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979244374] [2020-10-09 10:39:32,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116742788] [2020-10-09 10:39:32,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:32,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:32,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:32,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:32,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:32,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:32,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:32,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:32,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659941645] [2020-10-09 10:39:32,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:32,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:32,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:32,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:32,677 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-09 10:39:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:33,412 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-09 10:39:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:39:33,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:33,413 INFO L225 Difference]: With dead ends: 241 [2020-10-09 10:39:33,413 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:39:33,414 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:39:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:39:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-09 10:39:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-09 10:39:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-09 10:39:33,416 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-09 10:39:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:33,417 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-09 10:39:33,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-09 10:39:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:33,418 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:33,418 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:33,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-09 10:39:33,619 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1704129027, now seen corresponding path program 112 times [2020-10-09 10:39:33,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:33,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973752560] [2020-10-09 10:39:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973752560] [2020-10-09 10:39:33,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439427994] [2020-10-09 10:39:33,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:33,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:33,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:39:33,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:33,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:33,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:33,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:39:33,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383488861] [2020-10-09 10:39:33,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:39:33,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:33,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:39:33,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:39:33,914 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-09 10:39:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:34,642 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-09 10:39:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:39:34,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:39:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:34,644 INFO L225 Difference]: With dead ends: 232 [2020-10-09 10:39:34,644 INFO L226 Difference]: Without dead ends: 224 [2020-10-09 10:39:34,645 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:39:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-09 10:39:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-09 10:39:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-09 10:39:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-09 10:39:34,648 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-09 10:39:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:34,648 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-09 10:39:34,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:39:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-09 10:39:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:34,649 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:34,649 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:34,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:34,860 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:34,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1141268816, now seen corresponding path program 6 times [2020-10-09 10:39:34,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:34,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079079116] [2020-10-09 10:39:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:34,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079079116] [2020-10-09 10:39:34,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908453439] [2020-10-09 10:39:34,991 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:35,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:39:35,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:35,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:35,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:35,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:35,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:35,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:39:35,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163442221] [2020-10-09 10:39:35,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:39:35,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:35,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:39:35,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:39:35,332 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-09 10:39:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:35,704 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-09 10:39:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:35,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-09 10:39:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:35,706 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:39:35,707 INFO L226 Difference]: Without dead ends: 180 [2020-10-09 10:39:35,707 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-09 10:39:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-09 10:39:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:39:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-09 10:39:35,711 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-09 10:39:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:35,712 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-09 10:39:35,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:39:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-09 10:39:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:35,713 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:35,713 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:35,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-09 10:39:35,923 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash 33766584, now seen corresponding path program 21 times [2020-10-09 10:39:35,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:35,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599385449] [2020-10-09 10:39:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:36,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599385449] [2020-10-09 10:39:36,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141812965] [2020-10-09 10:39:36,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:36,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:39:36,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:36,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:36,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:36,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:36,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:36,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663415518] [2020-10-09 10:39:36,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:36,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:36,393 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-09 10:39:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:36,470 INFO L93 Difference]: Finished difference Result 180 states and 423 transitions. [2020-10-09 10:39:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:39:36,471 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:36,472 INFO L225 Difference]: With dead ends: 180 [2020-10-09 10:39:36,472 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:39:36,473 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:36,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:39:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-09 10:39:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-09 10:39:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-09 10:39:36,477 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-09 10:39:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:36,477 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-09 10:39:36,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-09 10:39:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:36,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:36,478 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:36,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-09 10:39:36,678 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash -913710200, now seen corresponding path program 22 times [2020-10-09 10:39:36,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:36,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708332429] [2020-10-09 10:39:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:36,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708332429] [2020-10-09 10:39:36,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480681121] [2020-10-09 10:39:36,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:36,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:36,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:36,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:36,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:37,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:37,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:37,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866117824] [2020-10-09 10:39:37,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:37,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:37,121 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-09 10:39:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:37,216 INFO L93 Difference]: Finished difference Result 197 states and 456 transitions. [2020-10-09 10:39:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:39:37,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:37,217 INFO L225 Difference]: With dead ends: 197 [2020-10-09 10:39:37,217 INFO L226 Difference]: Without dead ends: 194 [2020-10-09 10:39:37,218 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:39:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-09 10:39:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2020-10-09 10:39:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-09 10:39:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-09 10:39:37,221 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-09 10:39:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:37,221 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-09 10:39:37,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-09 10:39:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:37,222 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:37,222 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:37,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:37,431 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1775557960, now seen corresponding path program 23 times [2020-10-09 10:39:37,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:37,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208773907] [2020-10-09 10:39:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:37,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208773907] [2020-10-09 10:39:37,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926886249] [2020-10-09 10:39:37,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:37,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 10:39:37,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:37,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:37,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:37,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:37,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:37,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312171562] [2020-10-09 10:39:37,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:37,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:37,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:37,927 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-09 10:39:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:38,054 INFO L93 Difference]: Finished difference Result 196 states and 456 transitions. [2020-10-09 10:39:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:39:38,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:38,056 INFO L225 Difference]: With dead ends: 196 [2020-10-09 10:39:38,056 INFO L226 Difference]: Without dead ends: 193 [2020-10-09 10:39:38,056 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:39:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-09 10:39:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-09 10:39:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-09 10:39:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-09 10:39:38,058 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-09 10:39:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:38,059 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-09 10:39:38,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-09 10:39:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:38,060 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:38,060 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:38,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:38,260 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:38,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1110622840, now seen corresponding path program 24 times [2020-10-09 10:39:38,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:38,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156335474] [2020-10-09 10:39:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:38,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156335474] [2020-10-09 10:39:38,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447040970] [2020-10-09 10:39:38,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:38,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:39:38,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:38,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:38,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:38,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:38,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398283846] [2020-10-09 10:39:38,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:38,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:38,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:38,666 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-09 10:39:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:38,823 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-09 10:39:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:39:38,824 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:38,825 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:39:38,825 INFO L226 Difference]: Without dead ends: 192 [2020-10-09 10:39:38,825 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:39:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-09 10:39:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2020-10-09 10:39:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-09 10:39:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-09 10:39:38,828 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-09 10:39:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:38,828 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-09 10:39:38,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-09 10:39:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:38,828 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:38,828 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:39,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:39,029 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:39,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1089173320, now seen corresponding path program 25 times [2020-10-09 10:39:39,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:39,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351513663] [2020-10-09 10:39:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:39,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351513663] [2020-10-09 10:39:39,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259595324] [2020-10-09 10:39:39,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:39,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:39,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:39,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:39,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:39,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056933433] [2020-10-09 10:39:39,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:39,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:39,414 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-09 10:39:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:39,620 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-09 10:39:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:39:39,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:39,622 INFO L225 Difference]: With dead ends: 194 [2020-10-09 10:39:39,622 INFO L226 Difference]: Without dead ends: 191 [2020-10-09 10:39:39,622 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:39:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-09 10:39:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2020-10-09 10:39:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-09 10:39:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-09 10:39:39,626 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-09 10:39:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:39,627 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-09 10:39:39,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-09 10:39:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:39,627 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:39,627 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:39,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:39,837 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1088481400, now seen corresponding path program 26 times [2020-10-09 10:39:39,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:39,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133879372] [2020-10-09 10:39:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:39,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133879372] [2020-10-09 10:39:39,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405680197] [2020-10-09 10:39:39,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:40,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:40,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:40,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:40,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:40,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:40,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:40,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370401440] [2020-10-09 10:39:40,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:40,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:40,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:40,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:40,259 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-09 10:39:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:40,518 INFO L93 Difference]: Finished difference Result 193 states and 456 transitions. [2020-10-09 10:39:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:40,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:40,520 INFO L225 Difference]: With dead ends: 193 [2020-10-09 10:39:40,520 INFO L226 Difference]: Without dead ends: 190 [2020-10-09 10:39:40,520 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:39:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-09 10:39:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-10-09 10:39:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-09 10:39:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-09 10:39:40,523 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-09 10:39:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:40,523 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-09 10:39:40,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-09 10:39:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:39:40,523 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:40,523 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:40,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-09 10:39:40,724 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1088459080, now seen corresponding path program 27 times [2020-10-09 10:39:40,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:40,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094062980] [2020-10-09 10:39:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:40,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094062980] [2020-10-09 10:39:40,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555549532] [2020-10-09 10:39:40,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:40,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:39:40,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:40,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:40,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:41,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:41,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:41,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:41,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759874835] [2020-10-09 10:39:41,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:41,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:41,093 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-09 10:39:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:41,389 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-09 10:39:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:41,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:39:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:41,390 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:39:41,390 INFO L226 Difference]: Without dead ends: 196 [2020-10-09 10:39:41,390 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-09 10:39:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-09 10:39:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-09 10:39:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-09 10:39:41,394 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-09 10:39:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:41,395 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-09 10:39:41,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-09 10:39:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:41,395 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:41,396 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:41,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-09 10:39:41,603 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:41,604 INFO L82 PathProgramCache]: Analyzing trace with hash -195697579, now seen corresponding path program 113 times [2020-10-09 10:39:41,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:41,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491190060] [2020-10-09 10:39:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:41,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491190060] [2020-10-09 10:39:41,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463709764] [2020-10-09 10:39:41,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:41,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:41,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:42,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:42,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:42,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252547628] [2020-10-09 10:39:42,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:42,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:42,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:42,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:42,007 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-09 10:39:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:42,085 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-09 10:39:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:39:42,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:42,087 INFO L225 Difference]: With dead ends: 188 [2020-10-09 10:39:42,087 INFO L226 Difference]: Without dead ends: 186 [2020-10-09 10:39:42,087 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-09 10:39:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-09 10:39:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 10:39:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-09 10:39:42,090 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-09 10:39:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:42,090 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-09 10:39:42,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-09 10:39:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:42,090 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:42,090 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:42,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-09 10:39:42,291 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:42,292 INFO L82 PathProgramCache]: Analyzing trace with hash -195696618, now seen corresponding path program 114 times [2020-10-09 10:39:42,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:42,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653791388] [2020-10-09 10:39:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:42,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653791388] [2020-10-09 10:39:42,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868802613] [2020-10-09 10:39:42,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:42,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:42,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:42,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:42,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:42,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:42,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:42,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985395874] [2020-10-09 10:39:42,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:42,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:42,722 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-09 10:39:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:42,987 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-09 10:39:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:39:42,988 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:42,989 INFO L225 Difference]: With dead ends: 199 [2020-10-09 10:39:42,989 INFO L226 Difference]: Without dead ends: 197 [2020-10-09 10:39:42,989 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:39:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-09 10:39:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-09 10:39:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-09 10:39:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-09 10:39:42,992 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-09 10:39:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:42,992 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-09 10:39:42,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-09 10:39:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:42,993 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:42,993 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:43,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-09 10:39:43,194 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:43,195 INFO L82 PathProgramCache]: Analyzing trace with hash -195667788, now seen corresponding path program 115 times [2020-10-09 10:39:43,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:43,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190637731] [2020-10-09 10:39:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:43,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190637731] [2020-10-09 10:39:43,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946055347] [2020-10-09 10:39:43,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:43,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:43,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:43,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:43,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:43,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927683056] [2020-10-09 10:39:43,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:43,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:43,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:43,655 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-09 10:39:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:44,000 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-09 10:39:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:39:44,001 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:44,001 INFO L225 Difference]: With dead ends: 210 [2020-10-09 10:39:44,001 INFO L226 Difference]: Without dead ends: 208 [2020-10-09 10:39:44,002 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:39:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-09 10:39:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-09 10:39:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-09 10:39:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-09 10:39:44,004 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-09 10:39:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:44,004 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-09 10:39:44,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-09 10:39:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:44,004 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:44,004 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:44,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-09 10:39:44,205 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:44,206 INFO L82 PathProgramCache]: Analyzing trace with hash -194774058, now seen corresponding path program 116 times [2020-10-09 10:39:44,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:44,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407356993] [2020-10-09 10:39:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:44,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407356993] [2020-10-09 10:39:44,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070535914] [2020-10-09 10:39:44,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:44,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:44,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:44,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:44,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:44,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702772119] [2020-10-09 10:39:44,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:44,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:44,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:44,695 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-09 10:39:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:45,093 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-09 10:39:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:39:45,094 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:45,095 INFO L225 Difference]: With dead ends: 210 [2020-10-09 10:39:45,095 INFO L226 Difference]: Without dead ends: 208 [2020-10-09 10:39:45,095 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-09 10:39:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-09 10:39:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-09 10:39:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-09 10:39:45,099 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-09 10:39:45,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:45,099 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-09 10:39:45,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-09 10:39:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:45,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:45,100 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:45,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-09 10:39:45,304 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:45,304 INFO L82 PathProgramCache]: Analyzing trace with hash -194773097, now seen corresponding path program 117 times [2020-10-09 10:39:45,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:45,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847483091] [2020-10-09 10:39:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:45,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847483091] [2020-10-09 10:39:45,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412490622] [2020-10-09 10:39:45,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:45,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:39:45,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:45,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:45,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:49,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:49,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:49,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924053378] [2020-10-09 10:39:49,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:49,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:49,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:49,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:39:49,466 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-09 10:39:53,700 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:39:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:53,998 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-09 10:39:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:39:53,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:54,001 INFO L225 Difference]: With dead ends: 218 [2020-10-09 10:39:54,001 INFO L226 Difference]: Without dead ends: 216 [2020-10-09 10:39:54,002 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-09 10:39:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-09 10:39:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-09 10:39:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 10:39:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-09 10:39:54,006 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-09 10:39:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:54,006 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-09 10:39:54,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-09 10:39:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:54,007 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:54,007 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:54,208 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash -194744267, now seen corresponding path program 118 times [2020-10-09 10:39:54,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:54,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333621640] [2020-10-09 10:39:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333621640] [2020-10-09 10:39:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124812002] [2020-10-09 10:39:54,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:54,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:54,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:54,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:54,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:54,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:54,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:54,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448029664] [2020-10-09 10:39:54,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:54,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:54,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:54,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:54,988 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-09 10:39:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:55,786 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-09 10:39:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:39:55,788 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:55,789 INFO L225 Difference]: With dead ends: 212 [2020-10-09 10:39:55,790 INFO L226 Difference]: Without dead ends: 210 [2020-10-09 10:39:55,790 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-09 10:39:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-09 10:39:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-09 10:39:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-09 10:39:55,794 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-09 10:39:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:55,795 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-09 10:39:55,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-09 10:39:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:55,796 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:55,796 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:56,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:56,008 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash -167068428, now seen corresponding path program 119 times [2020-10-09 10:39:56,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:56,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989376967] [2020-10-09 10:39:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:56,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989376967] [2020-10-09 10:39:56,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847078103] [2020-10-09 10:39:56,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:56,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:56,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:56,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:56,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:56,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:56,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803261398] [2020-10-09 10:39:56,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:56,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:56,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:56,474 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-09 10:39:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:56,905 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-09 10:39:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:56,906 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:56,907 INFO L225 Difference]: With dead ends: 212 [2020-10-09 10:39:56,907 INFO L226 Difference]: Without dead ends: 210 [2020-10-09 10:39:56,907 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:39:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-09 10:39:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-09 10:39:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 10:39:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-09 10:39:56,911 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-09 10:39:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:56,911 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-09 10:39:56,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-09 10:39:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:56,911 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:56,912 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:57,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:57,112 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash -167067467, now seen corresponding path program 120 times [2020-10-09 10:39:57,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:57,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996940942] [2020-10-09 10:39:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:57,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996940942] [2020-10-09 10:39:57,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405136844] [2020-10-09 10:39:57,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:57,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:39:57,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:57,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:57,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:57,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:57,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325002925] [2020-10-09 10:39:57,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:57,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:57,518 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-09 10:39:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:57,955 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-09 10:39:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:39:57,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:57,957 INFO L225 Difference]: With dead ends: 224 [2020-10-09 10:39:57,957 INFO L226 Difference]: Without dead ends: 222 [2020-10-09 10:39:57,958 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:39:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-09 10:39:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-09 10:39:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 10:39:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-09 10:39:57,960 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-09 10:39:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:57,960 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-09 10:39:57,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-09 10:39:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:57,961 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:57,961 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:58,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:58,163 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash -167038637, now seen corresponding path program 121 times [2020-10-09 10:39:58,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:58,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508033837] [2020-10-09 10:39:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:58,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508033837] [2020-10-09 10:39:58,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9412707] [2020-10-09 10:39:58,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:58,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:58,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:58,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:58,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046376222] [2020-10-09 10:39:58,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:58,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:58,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:58,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:58,563 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-09 10:39:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:58,955 INFO L93 Difference]: Finished difference Result 218 states and 519 transitions. [2020-10-09 10:39:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:39:58,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:58,957 INFO L225 Difference]: With dead ends: 218 [2020-10-09 10:39:58,957 INFO L226 Difference]: Without dead ends: 216 [2020-10-09 10:39:58,957 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-09 10:39:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-09 10:39:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 10:39:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-09 10:39:58,960 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-09 10:39:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-09 10:39:58,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-09 10:39:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:58,961 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:58,961 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:59,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:59,164 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:59,164 INFO L82 PathProgramCache]: Analyzing trace with hash -166114155, now seen corresponding path program 122 times [2020-10-09 10:39:59,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:59,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418591422] [2020-10-09 10:39:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:59,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418591422] [2020-10-09 10:39:59,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948129721] [2020-10-09 10:39:59,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:59,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:59,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:59,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:59,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:59,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:59,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384567594] [2020-10-09 10:39:59,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:59,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:59,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:59,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:59,554 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-09 10:39:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:59,878 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-09 10:39:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:39:59,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:59,879 INFO L225 Difference]: With dead ends: 206 [2020-10-09 10:39:59,879 INFO L226 Difference]: Without dead ends: 204 [2020-10-09 10:39:59,880 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-09 10:39:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154. [2020-10-09 10:39:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-09 10:39:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-09 10:39:59,883 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-09 10:39:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:59,883 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-09 10:39:59,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-09 10:39:59,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:59,883 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:59,883 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:00,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-09 10:40:00,084 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:00,085 INFO L82 PathProgramCache]: Analyzing trace with hash 691806102, now seen corresponding path program 123 times [2020-10-09 10:40:00,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:00,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855776720] [2020-10-09 10:40:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:00,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855776720] [2020-10-09 10:40:00,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775779764] [2020-10-09 10:40:00,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:00,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:40:00,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:00,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:00,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:00,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187030857] [2020-10-09 10:40:00,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:00,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:00,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:00,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:00,468 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states. [2020-10-09 10:40:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:00,816 INFO L93 Difference]: Finished difference Result 207 states and 495 transitions. [2020-10-09 10:40:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:40:00,817 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:00,818 INFO L225 Difference]: With dead ends: 207 [2020-10-09 10:40:00,818 INFO L226 Difference]: Without dead ends: 205 [2020-10-09 10:40:00,818 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:40:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-09 10:40:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2020-10-09 10:40:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 10:40:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2020-10-09 10:40:00,822 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14 [2020-10-09 10:40:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:00,822 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2020-10-09 10:40:00,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2020-10-09 10:40:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:00,823 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:00,823 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:01,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-09 10:40:01,027 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:01,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:01,027 INFO L82 PathProgramCache]: Analyzing trace with hash 691807063, now seen corresponding path program 124 times [2020-10-09 10:40:01,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:01,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835746939] [2020-10-09 10:40:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:01,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835746939] [2020-10-09 10:40:01,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962409262] [2020-10-09 10:40:01,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:01,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:01,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:01,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:01,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:01,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:01,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:01,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954280317] [2020-10-09 10:40:01,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:01,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:01,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:01,464 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states. [2020-10-09 10:40:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:01,845 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-10-09 10:40:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:40:01,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:01,847 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:40:01,847 INFO L226 Difference]: Without dead ends: 215 [2020-10-09 10:40:01,848 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:40:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-09 10:40:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-09 10:40:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-09 10:40:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions. [2020-10-09 10:40:01,852 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14 [2020-10-09 10:40:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:01,852 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 400 transitions. [2020-10-09 10:40:01,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions. [2020-10-09 10:40:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:01,853 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:01,853 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:02,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-09 10:40:02,063 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash 691835893, now seen corresponding path program 125 times [2020-10-09 10:40:02,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:02,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076854344] [2020-10-09 10:40:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:02,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076854344] [2020-10-09 10:40:02,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637173780] [2020-10-09 10:40:02,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:02,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:02,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:02,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:02,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:02,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:02,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:02,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098423847] [2020-10-09 10:40:02,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:02,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:02,576 INFO L87 Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states. [2020-10-09 10:40:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:03,048 INFO L93 Difference]: Finished difference Result 223 states and 528 transitions. [2020-10-09 10:40:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:40:03,049 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:03,050 INFO L225 Difference]: With dead ends: 223 [2020-10-09 10:40:03,050 INFO L226 Difference]: Without dead ends: 221 [2020-10-09 10:40:03,050 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:40:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-09 10:40:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-09 10:40:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:40:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions. [2020-10-09 10:40:03,054 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14 [2020-10-09 10:40:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:03,055 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 411 transitions. [2020-10-09 10:40:03,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions. [2020-10-09 10:40:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:03,055 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:03,055 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:03,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-09 10:40:03,264 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash 692730584, now seen corresponding path program 126 times [2020-10-09 10:40:03,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:03,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281282684] [2020-10-09 10:40:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:03,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281282684] [2020-10-09 10:40:03,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490597760] [2020-10-09 10:40:03,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:03,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:03,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:03,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:03,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:03,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:03,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:03,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386674088] [2020-10-09 10:40:03,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:03,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:03,683 INFO L87 Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:04,058 INFO L93 Difference]: Finished difference Result 225 states and 531 transitions. [2020-10-09 10:40:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:40:04,059 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:04,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:04,059 INFO L225 Difference]: With dead ends: 225 [2020-10-09 10:40:04,059 INFO L226 Difference]: Without dead ends: 223 [2020-10-09 10:40:04,060 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:40:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-09 10:40:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161. [2020-10-09 10:40:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-09 10:40:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions. [2020-10-09 10:40:04,063 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14 [2020-10-09 10:40:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:04,063 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 407 transitions. [2020-10-09 10:40:04,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions. [2020-10-09 10:40:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:04,064 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:04,064 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:04,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:04,265 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:04,265 INFO L82 PathProgramCache]: Analyzing trace with hash 720435253, now seen corresponding path program 127 times [2020-10-09 10:40:04,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:04,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353477848] [2020-10-09 10:40:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:04,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353477848] [2020-10-09 10:40:04,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075339410] [2020-10-09 10:40:04,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:04,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:04,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:04,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:04,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:04,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637544741] [2020-10-09 10:40:04,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:04,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:04,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:04,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:04,689 INFO L87 Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states. [2020-10-09 10:40:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:05,047 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-09 10:40:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:40:05,048 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:05,049 INFO L225 Difference]: With dead ends: 214 [2020-10-09 10:40:05,049 INFO L226 Difference]: Without dead ends: 212 [2020-10-09 10:40:05,049 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:40:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-09 10:40:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2020-10-09 10:40:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:40:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions. [2020-10-09 10:40:05,055 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14 [2020-10-09 10:40:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:05,055 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 404 transitions. [2020-10-09 10:40:05,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions. [2020-10-09 10:40:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:05,056 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:05,056 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:05,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:05,257 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:05,257 INFO L82 PathProgramCache]: Analyzing trace with hash 721388565, now seen corresponding path program 128 times [2020-10-09 10:40:05,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:05,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474779784] [2020-10-09 10:40:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:05,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474779784] [2020-10-09 10:40:05,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300869330] [2020-10-09 10:40:05,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:05,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:05,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:05,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:05,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:05,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:05,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:05,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954750548] [2020-10-09 10:40:05,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:05,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:05,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:05,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:05,738 INFO L87 Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states. [2020-10-09 10:40:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:06,004 INFO L93 Difference]: Finished difference Result 203 states and 486 transitions. [2020-10-09 10:40:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:40:06,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:06,005 INFO L225 Difference]: With dead ends: 203 [2020-10-09 10:40:06,005 INFO L226 Difference]: Without dead ends: 201 [2020-10-09 10:40:06,005 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:40:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-09 10:40:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2020-10-09 10:40:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-09 10:40:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2020-10-09 10:40:06,009 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14 [2020-10-09 10:40:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:06,009 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2020-10-09 10:40:06,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2020-10-09 10:40:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:06,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:06,010 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:06,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-09 10:40:06,211 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:06,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1998481017, now seen corresponding path program 129 times [2020-10-09 10:40:06,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:06,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666150658] [2020-10-09 10:40:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:06,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666150658] [2020-10-09 10:40:06,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173078979] [2020-10-09 10:40:06,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:06,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:06,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:06,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:06,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:06,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:06,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:06,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787867109] [2020-10-09 10:40:06,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:06,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:06,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:06,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:06,669 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states. [2020-10-09 10:40:06,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:06,759 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-09 10:40:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:40:06,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:06,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:06,760 INFO L225 Difference]: With dead ends: 212 [2020-10-09 10:40:06,760 INFO L226 Difference]: Without dead ends: 210 [2020-10-09 10:40:06,761 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:40:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-09 10:40:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2020-10-09 10:40:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:40:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-09 10:40:06,764 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-09 10:40:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:06,765 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-09 10:40:06,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-09 10:40:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:06,765 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:06,765 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:06,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:06,969 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1998480056, now seen corresponding path program 130 times [2020-10-09 10:40:06,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:06,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495442912] [2020-10-09 10:40:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495442912] [2020-10-09 10:40:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906207034] [2020-10-09 10:40:07,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:07,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:07,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:07,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:07,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:07,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:07,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:07,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579701840] [2020-10-09 10:40:07,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:07,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:07,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:07,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:07,502 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states. [2020-10-09 10:40:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:07,784 INFO L93 Difference]: Finished difference Result 217 states and 513 transitions. [2020-10-09 10:40:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:40:07,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:07,785 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:40:07,785 INFO L226 Difference]: Without dead ends: 215 [2020-10-09 10:40:07,785 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:40:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-09 10:40:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164. [2020-10-09 10:40:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:40:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-09 10:40:07,789 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-09 10:40:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:07,789 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-09 10:40:07,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-09 10:40:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:07,789 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:07,789 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:07,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:07,990 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:07,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:07,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1998451226, now seen corresponding path program 131 times [2020-10-09 10:40:07,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:07,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616251795] [2020-10-09 10:40:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616251795] [2020-10-09 10:40:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560920728] [2020-10-09 10:40:08,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:08,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:08,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:08,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:08,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:08,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:08,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:08,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918664731] [2020-10-09 10:40:08,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:08,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:08,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:08,508 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-09 10:40:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:08,892 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-09 10:40:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:40:08,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:08,894 INFO L225 Difference]: With dead ends: 227 [2020-10-09 10:40:08,894 INFO L226 Difference]: Without dead ends: 225 [2020-10-09 10:40:08,894 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:40:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-09 10:40:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162. [2020-10-09 10:40:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:40:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions. [2020-10-09 10:40:08,897 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14 [2020-10-09 10:40:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:08,898 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 409 transitions. [2020-10-09 10:40:08,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions. [2020-10-09 10:40:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:08,898 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:08,898 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:09,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:09,099 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1997557496, now seen corresponding path program 132 times [2020-10-09 10:40:09,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:09,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187793917] [2020-10-09 10:40:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:09,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187793917] [2020-10-09 10:40:09,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136428188] [2020-10-09 10:40:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:09,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:09,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:09,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:09,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:09,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:09,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758664942] [2020-10-09 10:40:09,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:09,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:09,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:09,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:09,598 INFO L87 Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states. [2020-10-09 10:40:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:10,141 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-09 10:40:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:10,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:10,143 INFO L225 Difference]: With dead ends: 227 [2020-10-09 10:40:10,143 INFO L226 Difference]: Without dead ends: 225 [2020-10-09 10:40:10,143 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:40:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-09 10:40:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2020-10-09 10:40:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:40:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-09 10:40:10,145 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-09 10:40:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:10,145 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-09 10:40:10,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-09 10:40:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:10,146 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:10,146 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:10,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-09 10:40:10,350 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:10,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1997556535, now seen corresponding path program 133 times [2020-10-09 10:40:10,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:10,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931017207] [2020-10-09 10:40:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:10,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931017207] [2020-10-09 10:40:10,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590889657] [2020-10-09 10:40:10,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:10,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:10,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:14,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:14,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710837471] [2020-10-09 10:40:14,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:14,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:14,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:40:14,534 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-09 10:40:18,800 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:40:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:19,202 INFO L93 Difference]: Finished difference Result 237 states and 553 transitions. [2020-10-09 10:40:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:19,203 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:19,204 INFO L225 Difference]: With dead ends: 237 [2020-10-09 10:40:19,204 INFO L226 Difference]: Without dead ends: 235 [2020-10-09 10:40:19,205 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-09 10:40:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-09 10:40:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 163. [2020-10-09 10:40:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-09 10:40:19,209 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-09 10:40:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:19,209 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-09 10:40:19,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-09 10:40:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:19,210 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:19,210 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:19,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-09 10:40:19,411 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1997527705, now seen corresponding path program 134 times [2020-10-09 10:40:19,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:19,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663827900] [2020-10-09 10:40:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:19,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663827900] [2020-10-09 10:40:19,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076858136] [2020-10-09 10:40:19,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:19,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:19,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:19,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:20,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:20,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:20,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857519448] [2020-10-09 10:40:20,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:20,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:20,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:20,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:20,090 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-09 10:40:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:20,648 INFO L93 Difference]: Finished difference Result 229 states and 539 transitions. [2020-10-09 10:40:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:20,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:20,649 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:40:20,649 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:40:20,649 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:40:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:40:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-09 10:40:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:40:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 403 transitions. [2020-10-09 10:40:20,652 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 403 transitions. Word has length 14 [2020-10-09 10:40:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 403 transitions. [2020-10-09 10:40:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions. [2020-10-09 10:40:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:20,653 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:20,653 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:20,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-09 10:40:20,854 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1969851866, now seen corresponding path program 135 times [2020-10-09 10:40:20,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:20,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370716707] [2020-10-09 10:40:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370716707] [2020-10-09 10:40:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355606438] [2020-10-09 10:40:20,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:21,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:21,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:21,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:21,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:21,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:21,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210218849] [2020-10-09 10:40:21,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:21,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:21,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:21,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:21,260 INFO L87 Difference]: Start difference. First operand 160 states and 403 transitions. Second operand 17 states. [2020-10-09 10:40:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:21,839 INFO L93 Difference]: Finished difference Result 225 states and 529 transitions. [2020-10-09 10:40:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:40:21,841 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:21,842 INFO L225 Difference]: With dead ends: 225 [2020-10-09 10:40:21,842 INFO L226 Difference]: Without dead ends: 223 [2020-10-09 10:40:21,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:40:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-09 10:40:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163. [2020-10-09 10:40:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-09 10:40:21,848 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-09 10:40:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:21,848 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-09 10:40:21,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-09 10:40:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:21,849 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:21,849 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:22,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-09 10:40:22,062 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:22,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1969850905, now seen corresponding path program 136 times [2020-10-09 10:40:22,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:22,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011939758] [2020-10-09 10:40:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:22,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011939758] [2020-10-09 10:40:22,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509411639] [2020-10-09 10:40:22,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:22,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:22,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:22,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:22,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:22,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:22,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:22,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097121706] [2020-10-09 10:40:22,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:22,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:22,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:22,669 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-09 10:40:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:23,250 INFO L93 Difference]: Finished difference Result 239 states and 557 transitions. [2020-10-09 10:40:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:40:23,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:23,251 INFO L225 Difference]: With dead ends: 239 [2020-10-09 10:40:23,251 INFO L226 Difference]: Without dead ends: 237 [2020-10-09 10:40:23,251 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:40:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-09 10:40:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2020-10-09 10:40:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-09 10:40:23,254 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-09 10:40:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:23,254 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-09 10:40:23,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-09 10:40:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:23,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:23,255 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:23,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-09 10:40:23,455 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1969822075, now seen corresponding path program 137 times [2020-10-09 10:40:23,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:23,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131952937] [2020-10-09 10:40:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:23,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131952937] [2020-10-09 10:40:23,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620657508] [2020-10-09 10:40:23,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:23,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:23,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:23,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:23,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:23,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:23,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365988459] [2020-10-09 10:40:23,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:23,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:23,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:23,847 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-09 10:40:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:24,312 INFO L93 Difference]: Finished difference Result 234 states and 550 transitions. [2020-10-09 10:40:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:40:24,313 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:24,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:24,314 INFO L225 Difference]: With dead ends: 234 [2020-10-09 10:40:24,314 INFO L226 Difference]: Without dead ends: 232 [2020-10-09 10:40:24,314 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-09 10:40:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 163. [2020-10-09 10:40:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-09 10:40:24,318 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-09 10:40:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:24,318 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-09 10:40:24,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-09 10:40:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:24,318 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:24,319 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:24,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-09 10:40:24,530 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1968897593, now seen corresponding path program 138 times [2020-10-09 10:40:24,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:24,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602571560] [2020-10-09 10:40:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602571560] [2020-10-09 10:40:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858904786] [2020-10-09 10:40:24,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:24,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:24,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:24,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:24,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:24,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440247284] [2020-10-09 10:40:24,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:24,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:24,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:24,942 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-09 10:40:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:25,356 INFO L93 Difference]: Finished difference Result 218 states and 515 transitions. [2020-10-09 10:40:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:25,357 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:25,358 INFO L225 Difference]: With dead ends: 218 [2020-10-09 10:40:25,358 INFO L226 Difference]: Without dead ends: 216 [2020-10-09 10:40:25,358 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:40:25,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-09 10:40:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 159. [2020-10-09 10:40:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 10:40:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 399 transitions. [2020-10-09 10:40:25,360 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 399 transitions. Word has length 14 [2020-10-09 10:40:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:25,360 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 399 transitions. [2020-10-09 10:40:25,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 399 transitions. [2020-10-09 10:40:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:25,361 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:25,361 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:25,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:25,562 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash 575763989, now seen corresponding path program 139 times [2020-10-09 10:40:25,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:25,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569428624] [2020-10-09 10:40:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:25,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569428624] [2020-10-09 10:40:25,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911965058] [2020-10-09 10:40:25,750 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:25,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:25,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:26,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:26,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749133190] [2020-10-09 10:40:26,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:26,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:26,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:26,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:26,026 INFO L87 Difference]: Start difference. First operand 159 states and 399 transitions. Second operand 17 states. [2020-10-09 10:40:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:26,159 INFO L93 Difference]: Finished difference Result 208 states and 495 transitions. [2020-10-09 10:40:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:40:26,160 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:26,161 INFO L225 Difference]: With dead ends: 208 [2020-10-09 10:40:26,161 INFO L226 Difference]: Without dead ends: 206 [2020-10-09 10:40:26,161 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:40:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-09 10:40:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-09 10:40:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:40:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 417 transitions. [2020-10-09 10:40:26,164 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 417 transitions. Word has length 14 [2020-10-09 10:40:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:26,165 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 417 transitions. [2020-10-09 10:40:26,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 417 transitions. [2020-10-09 10:40:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:26,165 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:26,165 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:26,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:26,366 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:26,366 INFO L82 PathProgramCache]: Analyzing trace with hash 575764950, now seen corresponding path program 140 times [2020-10-09 10:40:26,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:26,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195522546] [2020-10-09 10:40:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:26,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195522546] [2020-10-09 10:40:26,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469819674] [2020-10-09 10:40:26,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:26,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:26,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:26,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:26,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:26,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:26,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077784410] [2020-10-09 10:40:26,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:26,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:26,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:26,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:26,838 INFO L87 Difference]: Start difference. First operand 165 states and 417 transitions. Second operand 17 states. [2020-10-09 10:40:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:27,200 INFO L93 Difference]: Finished difference Result 229 states and 536 transitions. [2020-10-09 10:40:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:27,201 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:27,202 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:40:27,202 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:40:27,203 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:40:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:40:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 163. [2020-10-09 10:40:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-09 10:40:27,206 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-09 10:40:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:27,206 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-09 10:40:27,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-09 10:40:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:27,207 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:27,207 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:27,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:27,407 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash 575793780, now seen corresponding path program 141 times [2020-10-09 10:40:27,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:27,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046438129] [2020-10-09 10:40:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:27,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046438129] [2020-10-09 10:40:27,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015527657] [2020-10-09 10:40:27,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:27,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:27,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:27,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:27,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:27,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:27,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:27,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047905271] [2020-10-09 10:40:27,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:27,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:27,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:27,889 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:28,327 INFO L93 Difference]: Finished difference Result 235 states and 548 transitions. [2020-10-09 10:40:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:28,328 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:28,329 INFO L225 Difference]: With dead ends: 235 [2020-10-09 10:40:28,329 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:40:28,329 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:40:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:40:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 161. [2020-10-09 10:40:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-09 10:40:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 405 transitions. [2020-10-09 10:40:28,332 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 405 transitions. Word has length 14 [2020-10-09 10:40:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:28,332 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 405 transitions. [2020-10-09 10:40:28,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 405 transitions. [2020-10-09 10:40:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:28,333 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:28,333 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:28,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:28,534 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:28,534 INFO L82 PathProgramCache]: Analyzing trace with hash 576687510, now seen corresponding path program 142 times [2020-10-09 10:40:28,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:28,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939265005] [2020-10-09 10:40:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:28,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939265005] [2020-10-09 10:40:28,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978243270] [2020-10-09 10:40:28,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:28,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:28,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:28,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:29,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:29,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:29,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914868914] [2020-10-09 10:40:29,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:29,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:29,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:29,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:29,011 INFO L87 Difference]: Start difference. First operand 161 states and 405 transitions. Second operand 17 states. [2020-10-09 10:40:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:29,563 INFO L93 Difference]: Finished difference Result 233 states and 544 transitions. [2020-10-09 10:40:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:29,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:29,564 INFO L225 Difference]: With dead ends: 233 [2020-10-09 10:40:29,564 INFO L226 Difference]: Without dead ends: 231 [2020-10-09 10:40:29,565 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-09 10:40:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163. [2020-10-09 10:40:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-09 10:40:29,569 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-09 10:40:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:29,569 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-09 10:40:29,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-09 10:40:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:29,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:29,570 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:29,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:29,778 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:29,779 INFO L82 PathProgramCache]: Analyzing trace with hash 576688471, now seen corresponding path program 143 times [2020-10-09 10:40:29,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:29,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675064145] [2020-10-09 10:40:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:29,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675064145] [2020-10-09 10:40:29,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940758350] [2020-10-09 10:40:29,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:29,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:29,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:29,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:29,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:34,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:34,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:34,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027551036] [2020-10-09 10:40:34,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:34,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:34,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:34,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:40:34,324 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:38,608 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:40:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:38,996 INFO L93 Difference]: Finished difference Result 241 states and 560 transitions. [2020-10-09 10:40:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:40:38,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:38,998 INFO L225 Difference]: With dead ends: 241 [2020-10-09 10:40:38,998 INFO L226 Difference]: Without dead ends: 239 [2020-10-09 10:40:38,998 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-09 10:40:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-09 10:40:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-09 10:40:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 410 transitions. [2020-10-09 10:40:39,001 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 410 transitions. Word has length 14 [2020-10-09 10:40:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:39,002 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 410 transitions. [2020-10-09 10:40:39,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 410 transitions. [2020-10-09 10:40:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:39,002 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:39,002 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:39,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:39,203 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:39,204 INFO L82 PathProgramCache]: Analyzing trace with hash 576717301, now seen corresponding path program 144 times [2020-10-09 10:40:39,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:39,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777908019] [2020-10-09 10:40:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:39,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777908019] [2020-10-09 10:40:39,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927488488] [2020-10-09 10:40:39,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:39,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:39,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:39,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:39,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:39,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:39,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:39,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208797042] [2020-10-09 10:40:39,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:39,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:39,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:39,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:39,736 INFO L87 Difference]: Start difference. First operand 163 states and 410 transitions. Second operand 17 states. [2020-10-09 10:40:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:40,386 INFO L93 Difference]: Finished difference Result 233 states and 548 transitions. [2020-10-09 10:40:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:40:40,386 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:40,387 INFO L225 Difference]: With dead ends: 233 [2020-10-09 10:40:40,387 INFO L226 Difference]: Without dead ends: 231 [2020-10-09 10:40:40,387 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-09 10:40:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-10-09 10:40:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:40:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 401 transitions. [2020-10-09 10:40:40,390 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 401 transitions. Word has length 14 [2020-10-09 10:40:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:40,391 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 401 transitions. [2020-10-09 10:40:40,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 401 transitions. [2020-10-09 10:40:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:40,391 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:40,391 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:40,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-09 10:40:40,592 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1212993479, now seen corresponding path program 145 times [2020-10-09 10:40:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:40,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002186612] [2020-10-09 10:40:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:40,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002186612] [2020-10-09 10:40:40,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650662387] [2020-10-09 10:40:40,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:40,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:40,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:41,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:41,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:41,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016841884] [2020-10-09 10:40:41,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:41,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:41,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:41,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:41,039 INFO L87 Difference]: Start difference. First operand 160 states and 401 transitions. Second operand 17 states. [2020-10-09 10:40:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:41,207 INFO L93 Difference]: Finished difference Result 204 states and 486 transitions. [2020-10-09 10:40:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:40:41,208 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:41,208 INFO L225 Difference]: With dead ends: 204 [2020-10-09 10:40:41,208 INFO L226 Difference]: Without dead ends: 202 [2020-10-09 10:40:41,208 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:40:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-09 10:40:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2020-10-09 10:40:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:40:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 413 transitions. [2020-10-09 10:40:41,212 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 413 transitions. Word has length 14 [2020-10-09 10:40:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:41,212 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 413 transitions. [2020-10-09 10:40:41,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 413 transitions. [2020-10-09 10:40:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:41,212 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:41,213 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:41,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:41,413 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:41,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:41,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1212994440, now seen corresponding path program 146 times [2020-10-09 10:40:41,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:41,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756135642] [2020-10-09 10:40:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:41,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756135642] [2020-10-09 10:40:41,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893882973] [2020-10-09 10:40:41,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:41,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:41,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:41,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:41,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:41,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:41,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:41,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336904675] [2020-10-09 10:40:41,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:41,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:41,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:41,856 INFO L87 Difference]: Start difference. First operand 164 states and 413 transitions. Second operand 17 states. [2020-10-09 10:40:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:42,267 INFO L93 Difference]: Finished difference Result 225 states and 527 transitions. [2020-10-09 10:40:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:42,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:42,268 INFO L225 Difference]: With dead ends: 225 [2020-10-09 10:40:42,268 INFO L226 Difference]: Without dead ends: 223 [2020-10-09 10:40:42,269 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:40:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-09 10:40:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 162. [2020-10-09 10:40:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:40:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-09 10:40:42,272 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-09 10:40:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:42,272 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-09 10:40:42,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-09 10:40:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:42,273 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:42,273 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:42,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-09 10:40:42,474 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:42,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1213023270, now seen corresponding path program 147 times [2020-10-09 10:40:42,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:42,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35204977] [2020-10-09 10:40:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:42,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35204977] [2020-10-09 10:40:42,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498553339] [2020-10-09 10:40:42,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:42,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:42,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:42,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:42,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:42,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:42,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:42,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165278639] [2020-10-09 10:40:42,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:42,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:42,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:42,934 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 17 states. [2020-10-09 10:40:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:43,442 INFO L93 Difference]: Finished difference Result 231 states and 539 transitions. [2020-10-09 10:40:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:43,443 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:43,443 INFO L225 Difference]: With dead ends: 231 [2020-10-09 10:40:43,444 INFO L226 Difference]: Without dead ends: 229 [2020-10-09 10:40:43,444 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:40:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-09 10:40:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 161. [2020-10-09 10:40:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-09 10:40:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 403 transitions. [2020-10-09 10:40:43,446 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 403 transitions. Word has length 14 [2020-10-09 10:40:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:43,446 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 403 transitions. [2020-10-09 10:40:43,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 403 transitions. [2020-10-09 10:40:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:43,447 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:43,447 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:43,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:43,650 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1233549269, now seen corresponding path program 148 times [2020-10-09 10:40:43,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:43,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668152451] [2020-10-09 10:40:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668152451] [2020-10-09 10:40:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245220458] [2020-10-09 10:40:43,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:43,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:43,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:43,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:43,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:44,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:44,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648453511] [2020-10-09 10:40:44,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:44,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:44,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:44,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:44,139 INFO L87 Difference]: Start difference. First operand 161 states and 403 transitions. Second operand 17 states. [2020-10-09 10:40:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:44,490 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-09 10:40:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:40:44,491 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:44,492 INFO L225 Difference]: With dead ends: 200 [2020-10-09 10:40:44,492 INFO L226 Difference]: Without dead ends: 198 [2020-10-09 10:40:44,492 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:40:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-09 10:40:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-10-09 10:40:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:40:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 409 transitions. [2020-10-09 10:40:44,496 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 409 transitions. Word has length 14 [2020-10-09 10:40:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:44,496 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 409 transitions. [2020-10-09 10:40:44,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 409 transitions. [2020-10-09 10:40:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:44,497 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:44,497 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:44,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:44,698 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1233550230, now seen corresponding path program 149 times [2020-10-09 10:40:44,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:44,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770771448] [2020-10-09 10:40:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770771448] [2020-10-09 10:40:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967181910] [2020-10-09 10:40:44,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:44,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:44,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:44,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:45,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:45,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:45,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191091311] [2020-10-09 10:40:45,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:45,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:45,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:45,104 INFO L87 Difference]: Start difference. First operand 163 states and 409 transitions. Second operand 17 states. [2020-10-09 10:40:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:45,558 INFO L93 Difference]: Finished difference Result 221 states and 518 transitions. [2020-10-09 10:40:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:40:45,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:45,560 INFO L225 Difference]: With dead ends: 221 [2020-10-09 10:40:45,560 INFO L226 Difference]: Without dead ends: 219 [2020-10-09 10:40:45,560 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:40:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-09 10:40:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 162. [2020-10-09 10:40:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:40:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 405 transitions. [2020-10-09 10:40:45,563 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 405 transitions. Word has length 14 [2020-10-09 10:40:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:45,563 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 405 transitions. [2020-10-09 10:40:45,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 405 transitions. [2020-10-09 10:40:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:45,564 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:45,564 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:45,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-09 10:40:45,774 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1234212359, now seen corresponding path program 150 times [2020-10-09 10:40:45,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:45,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620123818] [2020-10-09 10:40:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620123818] [2020-10-09 10:40:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654337964] [2020-10-09 10:40:45,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:45,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:45,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:45,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-09 10:40:45,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:46,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:46,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-09 10:40:46,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174678887] [2020-10-09 10:40:46,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:40:46,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:46,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:40:46,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:40:46,014 INFO L87 Difference]: Start difference. First operand 162 states and 405 transitions. Second operand 11 states. [2020-10-09 10:40:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:46,249 INFO L93 Difference]: Finished difference Result 201 states and 476 transitions. [2020-10-09 10:40:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:40:46,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-09 10:40:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:46,250 INFO L225 Difference]: With dead ends: 201 [2020-10-09 10:40:46,251 INFO L226 Difference]: Without dead ends: 199 [2020-10-09 10:40:46,251 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:40:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-09 10:40:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2020-10-09 10:40:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:40:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-09 10:40:46,254 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-09 10:40:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:46,254 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-09 10:40:46,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:40:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-09 10:40:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:46,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:46,255 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:46,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:46,456 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1234234679, now seen corresponding path program 151 times [2020-10-09 10:40:46,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:46,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531638774] [2020-10-09 10:40:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:46,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531638774] [2020-10-09 10:40:46,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271715347] [2020-10-09 10:40:46,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:46,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:46,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:46,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:46,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:46,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:46,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114911257] [2020-10-09 10:40:46,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:46,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:46,898 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:47,520 INFO L93 Difference]: Finished difference Result 226 states and 539 transitions. [2020-10-09 10:40:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:47,521 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:47,521 INFO L225 Difference]: With dead ends: 226 [2020-10-09 10:40:47,521 INFO L226 Difference]: Without dead ends: 221 [2020-10-09 10:40:47,521 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:40:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-09 10:40:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 164. [2020-10-09 10:40:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:40:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-09 10:40:47,525 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-09 10:40:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:47,525 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-09 10:40:47,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-09 10:40:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:47,526 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:47,526 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:47,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:47,726 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1234242150, now seen corresponding path program 152 times [2020-10-09 10:40:47,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:47,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474489268] [2020-10-09 10:40:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474489268] [2020-10-09 10:40:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358980436] [2020-10-09 10:40:47,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:47,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:47,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:47,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:47,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:48,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:48,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:48,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465852786] [2020-10-09 10:40:48,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:48,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:48,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:48,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:48,158 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-09 10:40:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:48,683 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-09 10:40:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:40:48,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:48,685 INFO L225 Difference]: With dead ends: 218 [2020-10-09 10:40:48,685 INFO L226 Difference]: Without dead ends: 216 [2020-10-09 10:40:48,686 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-09 10:40:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 166. [2020-10-09 10:40:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:40:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-09 10:40:48,688 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-09 10:40:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:48,688 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-09 10:40:48,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-09 10:40:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:48,689 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:48,689 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:48,890 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1234263509, now seen corresponding path program 153 times [2020-10-09 10:40:48,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:48,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675349102] [2020-10-09 10:40:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675349102] [2020-10-09 10:40:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344465013] [2020-10-09 10:40:49,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:49,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:49,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:49,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:49,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:49,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:40:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:49,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:49,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348888133] [2020-10-09 10:40:49,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:49,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:49,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:49,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:49,335 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:50,165 INFO L93 Difference]: Finished difference Result 248 states and 590 transitions. [2020-10-09 10:40:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:40:50,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:50,167 INFO L225 Difference]: With dead ends: 248 [2020-10-09 10:40:50,167 INFO L226 Difference]: Without dead ends: 243 [2020-10-09 10:40:50,167 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:40:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-09 10:40:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 166. [2020-10-09 10:40:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:40:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-09 10:40:50,172 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-09 10:40:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-09 10:40:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-09 10:40:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:50,173 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:50,173 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:50,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:50,381 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:50,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1234264470, now seen corresponding path program 154 times [2020-10-09 10:40:50,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:50,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070091239] [2020-10-09 10:40:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:50,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070091239] [2020-10-09 10:40:50,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191024466] [2020-10-09 10:40:50,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:50,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:50,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:50,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:50,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:50,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:50,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:50,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625889495] [2020-10-09 10:40:50,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:50,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:50,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:50,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:50,775 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:51,411 INFO L93 Difference]: Finished difference Result 238 states and 567 transitions. [2020-10-09 10:40:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:51,412 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:51,413 INFO L225 Difference]: With dead ends: 238 [2020-10-09 10:40:51,413 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:40:51,413 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:40:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:40:51,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2020-10-09 10:40:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:40:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2020-10-09 10:40:51,416 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 14 [2020-10-09 10:40:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:51,417 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2020-10-09 10:40:51,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2020-10-09 10:40:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:51,417 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:51,417 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:51,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:51,618 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1234472790, now seen corresponding path program 155 times [2020-10-09 10:40:51,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:51,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596347615] [2020-10-09 10:40:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:51,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596347615] [2020-10-09 10:40:51,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151145946] [2020-10-09 10:40:51,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:51,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:51,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:52,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:52,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:52,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362431107] [2020-10-09 10:40:52,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:52,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:52,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:52,144 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand 17 states. [2020-10-09 10:40:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:52,990 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2020-10-09 10:40:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:40:52,991 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:52,992 INFO L225 Difference]: With dead ends: 235 [2020-10-09 10:40:52,992 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:40:52,992 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:40:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2020-10-09 10:40:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:40:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-09 10:40:52,996 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-09 10:40:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:52,996 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-09 10:40:52,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-09 10:40:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:52,997 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:52,997 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:53,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:53,207 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1235135880, now seen corresponding path program 156 times [2020-10-09 10:40:53,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:53,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547122952] [2020-10-09 10:40:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:53,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547122952] [2020-10-09 10:40:53,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394410587] [2020-10-09 10:40:53,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:53,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:53,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:53,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:53,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:53,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:53,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:53,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637470889] [2020-10-09 10:40:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:53,694 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-09 10:40:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:54,448 INFO L93 Difference]: Finished difference Result 252 states and 594 transitions. [2020-10-09 10:40:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:40:54,449 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:54,449 INFO L225 Difference]: With dead ends: 252 [2020-10-09 10:40:54,449 INFO L226 Difference]: Without dead ends: 250 [2020-10-09 10:40:54,449 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:40:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-09 10:40:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 166. [2020-10-09 10:40:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:40:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-09 10:40:54,453 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-09 10:40:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:54,453 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-09 10:40:54,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-09 10:40:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:54,454 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:54,454 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:54,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-09 10:40:54,654 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:54,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:54,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1235157239, now seen corresponding path program 157 times [2020-10-09 10:40:54,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:54,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133909394] [2020-10-09 10:40:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:54,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133909394] [2020-10-09 10:40:54,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15892160] [2020-10-09 10:40:54,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:54,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:54,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:55,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:40:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:55,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:55,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023803524] [2020-10-09 10:40:55,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:55,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:55,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:55,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:55,155 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-09 10:40:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:56,145 INFO L93 Difference]: Finished difference Result 258 states and 617 transitions. [2020-10-09 10:40:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:40:56,147 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:56,147 INFO L225 Difference]: With dead ends: 258 [2020-10-09 10:40:56,147 INFO L226 Difference]: Without dead ends: 253 [2020-10-09 10:40:56,148 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=371, Invalid=751, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:40:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-09 10:40:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 167. [2020-10-09 10:40:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:40:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-09 10:40:56,151 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-09 10:40:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:56,151 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-09 10:40:56,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-09 10:40:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:56,152 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:56,152 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:56,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-09 10:40:56,355 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:56,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1235158200, now seen corresponding path program 158 times [2020-10-09 10:40:56,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:56,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050647606] [2020-10-09 10:40:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:56,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050647606] [2020-10-09 10:40:56,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548428588] [2020-10-09 10:40:56,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:56,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:56,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:56,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:58,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:40:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:58,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:58,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:58,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701704880] [2020-10-09 10:40:58,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:58,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:40:58,881 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-09 10:41:03,284 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-09 10:41:07,568 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-09 10:41:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:09,038 INFO L93 Difference]: Finished difference Result 287 states and 685 transitions. [2020-10-09 10:41:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:41:09,040 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:09,041 INFO L225 Difference]: With dead ends: 287 [2020-10-09 10:41:09,041 INFO L226 Difference]: Without dead ends: 279 [2020-10-09 10:41:09,041 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-09 10:41:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-09 10:41:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2020-10-09 10:41:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:41:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 400 transitions. [2020-10-09 10:41:09,045 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 400 transitions. Word has length 14 [2020-10-09 10:41:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:09,045 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 400 transitions. [2020-10-09 10:41:09,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 400 transitions. [2020-10-09 10:41:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:09,046 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:09,046 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:09,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-09 10:41:09,250 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:09,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1235187030, now seen corresponding path program 159 times [2020-10-09 10:41:09,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:09,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584777402] [2020-10-09 10:41:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:09,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584777402] [2020-10-09 10:41:09,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3844812] [2020-10-09 10:41:09,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:09,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:41:09,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:09,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:10,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:41:10,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:41:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:12,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:12,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:41:12,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632684389] [2020-10-09 10:41:12,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:41:12,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:41:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2020-10-09 10:41:12,051 INFO L87 Difference]: Start difference. First operand 162 states and 400 transitions. Second operand 18 states. [2020-10-09 10:41:14,819 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-09 10:41:23,041 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 46 [2020-10-09 10:41:36,897 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-09 10:41:46,550 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-09 10:42:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:11,586 INFO L93 Difference]: Finished difference Result 283 states and 667 transitions. [2020-10-09 10:42:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:42:11,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-09 10:42:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:11,588 INFO L225 Difference]: With dead ends: 283 [2020-10-09 10:42:11,589 INFO L226 Difference]: Without dead ends: 278 [2020-10-09 10:42:11,589 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=391, Invalid=930, Unknown=11, NotChecked=0, Total=1332 [2020-10-09 10:42:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-09 10:42:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 160. [2020-10-09 10:42:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:42:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 390 transitions. [2020-10-09 10:42:11,592 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 390 transitions. Word has length 14 [2020-10-09 10:42:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:11,592 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 390 transitions. [2020-10-09 10:42:11,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:42:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 390 transitions. [2020-10-09 10:42:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:11,593 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:11,593 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:11,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:11,794 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:11,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:11,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1241622630, now seen corresponding path program 160 times [2020-10-09 10:42:11,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:11,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890065794] [2020-10-09 10:42:11,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890065794] [2020-10-09 10:42:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611691390] [2020-10-09 10:42:11,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:11,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:42:11,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:11,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:11,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:12,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:12,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:12,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88779951] [2020-10-09 10:42:12,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:12,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:12,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:12,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:12,403 INFO L87 Difference]: Start difference. First operand 160 states and 390 transitions. Second operand 17 states. [2020-10-09 10:42:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:13,123 INFO L93 Difference]: Finished difference Result 235 states and 543 transitions. [2020-10-09 10:42:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:42:13,124 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:13,125 INFO L225 Difference]: With dead ends: 235 [2020-10-09 10:42:13,125 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:42:13,125 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:42:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:42:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 163. [2020-10-09 10:42:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:42:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 401 transitions. [2020-10-09 10:42:13,128 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 401 transitions. Word has length 14 [2020-10-09 10:42:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:13,128 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 401 transitions. [2020-10-09 10:42:13,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 401 transitions. [2020-10-09 10:42:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:13,128 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:13,129 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:13,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:13,329 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:13,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1241623591, now seen corresponding path program 161 times [2020-10-09 10:42:13,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:13,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284095783] [2020-10-09 10:42:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:13,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284095783] [2020-10-09 10:42:13,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576767315] [2020-10-09 10:42:13,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:13,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:42:13,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:13,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:13,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:19,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:19,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:19,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854410152] [2020-10-09 10:42:19,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:19,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:19,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:42:19,795 INFO L87 Difference]: Start difference. First operand 163 states and 401 transitions. Second operand 17 states. [2020-10-09 10:42:24,208 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:42:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:30,685 INFO L93 Difference]: Finished difference Result 241 states and 556 transitions. [2020-10-09 10:42:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:42:30,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:30,687 INFO L225 Difference]: With dead ends: 241 [2020-10-09 10:42:30,687 INFO L226 Difference]: Without dead ends: 239 [2020-10-09 10:42:30,687 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=193, Invalid=508, Unknown=1, NotChecked=0, Total=702 [2020-10-09 10:42:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-09 10:42:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-09 10:42:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:42:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 400 transitions. [2020-10-09 10:42:30,690 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 400 transitions. Word has length 14 [2020-10-09 10:42:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:30,691 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 400 transitions. [2020-10-09 10:42:30,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 400 transitions. [2020-10-09 10:42:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:30,691 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:30,691 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:30,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-09 10:42:30,892 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:30,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1241652421, now seen corresponding path program 162 times [2020-10-09 10:42:30,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:30,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635893196] [2020-10-09 10:42:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:31,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635893196] [2020-10-09 10:42:31,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953643684] [2020-10-09 10:42:31,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:31,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:42:31,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:31,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:31,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:31,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:31,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:31,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421193557] [2020-10-09 10:42:31,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:31,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:31,418 INFO L87 Difference]: Start difference. First operand 163 states and 400 transitions. Second operand 17 states. [2020-10-09 10:42:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:32,083 INFO L93 Difference]: Finished difference Result 235 states and 546 transitions. [2020-10-09 10:42:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:42:32,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:32,085 INFO L225 Difference]: With dead ends: 235 [2020-10-09 10:42:32,085 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:42:32,086 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:42:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:42:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2020-10-09 10:42:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:42:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2020-10-09 10:42:32,089 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 14 [2020-10-09 10:42:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:32,089 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2020-10-09 10:42:32,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2020-10-09 10:42:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:32,090 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:32,090 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:32,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:32,291 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:32,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1262178420, now seen corresponding path program 163 times [2020-10-09 10:42:32,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:32,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425017057] [2020-10-09 10:42:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:32,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425017057] [2020-10-09 10:42:32,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306519552] [2020-10-09 10:42:32,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:32,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:32,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:32,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:32,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:32,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353349754] [2020-10-09 10:42:32,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:32,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:32,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:32,792 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand 17 states. [2020-10-09 10:42:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:33,724 INFO L93 Difference]: Finished difference Result 254 states and 587 transitions. [2020-10-09 10:42:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:42:33,725 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:33,726 INFO L225 Difference]: With dead ends: 254 [2020-10-09 10:42:33,726 INFO L226 Difference]: Without dead ends: 252 [2020-10-09 10:42:33,727 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:42:33,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-09 10:42:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 164. [2020-10-09 10:42:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:42:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 405 transitions. [2020-10-09 10:42:33,731 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 405 transitions. Word has length 14 [2020-10-09 10:42:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:33,731 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 405 transitions. [2020-10-09 10:42:33,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 405 transitions. [2020-10-09 10:42:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:33,731 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:33,731 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:33,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2020-10-09 10:42:33,932 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:33,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1262179381, now seen corresponding path program 164 times [2020-10-09 10:42:33,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:33,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218415171] [2020-10-09 10:42:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:34,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218415171] [2020-10-09 10:42:34,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654031212] [2020-10-09 10:42:34,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:34,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:42:34,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:34,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:35,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:35,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:35,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54562104] [2020-10-09 10:42:35,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:35,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:35,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:35,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:35,725 INFO L87 Difference]: Start difference. First operand 164 states and 405 transitions. Second operand 17 states. [2020-10-09 10:42:40,245 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:42:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:55,147 INFO L93 Difference]: Finished difference Result 264 states and 610 transitions. [2020-10-09 10:42:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:42:55,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:55,149 INFO L225 Difference]: With dead ends: 264 [2020-10-09 10:42:55,149 INFO L226 Difference]: Without dead ends: 262 [2020-10-09 10:42:55,149 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=289, Invalid=699, Unknown=4, NotChecked=0, Total=992 [2020-10-09 10:42:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-09 10:42:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 165. [2020-10-09 10:42:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:42:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 409 transitions. [2020-10-09 10:42:55,153 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 409 transitions. Word has length 14 [2020-10-09 10:42:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:55,153 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 409 transitions. [2020-10-09 10:42:55,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 409 transitions. [2020-10-09 10:42:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:55,154 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:55,154 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:55,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:55,355 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:55,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:55,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1262841510, now seen corresponding path program 165 times [2020-10-09 10:42:55,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:55,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479862377] [2020-10-09 10:42:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:55,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479862377] [2020-10-09 10:42:55,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293867193] [2020-10-09 10:42:55,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:55,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:42:55,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:55,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:55,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:55,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:55,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:55,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235830073] [2020-10-09 10:42:55,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:55,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:55,935 INFO L87 Difference]: Start difference. First operand 165 states and 409 transitions. Second operand 17 states. [2020-10-09 10:42:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:57,035 INFO L93 Difference]: Finished difference Result 255 states and 604 transitions. [2020-10-09 10:42:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:42:57,037 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:57,038 INFO L225 Difference]: With dead ends: 255 [2020-10-09 10:42:57,038 INFO L226 Difference]: Without dead ends: 253 [2020-10-09 10:42:57,038 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:42:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-09 10:42:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 167. [2020-10-09 10:42:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:42:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-09 10:42:57,042 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-09 10:42:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:57,042 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-09 10:42:57,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-09 10:42:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:57,043 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:57,043 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:57,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:57,243 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:57,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1262862869, now seen corresponding path program 166 times [2020-10-09 10:42:57,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:57,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846180137] [2020-10-09 10:42:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:57,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846180137] [2020-10-09 10:42:57,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242174275] [2020-10-09 10:42:57,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:57,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:42:57,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:57,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:57,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:57,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:57,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:57,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:57,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624429335] [2020-10-09 10:42:57,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:57,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:57,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:57,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:57,785 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-09 10:42:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:59,152 INFO L93 Difference]: Finished difference Result 256 states and 613 transitions. [2020-10-09 10:42:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:42:59,153 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:59,154 INFO L225 Difference]: With dead ends: 256 [2020-10-09 10:42:59,154 INFO L226 Difference]: Without dead ends: 251 [2020-10-09 10:42:59,154 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=408, Invalid=852, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:42:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-09 10:42:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 167. [2020-10-09 10:42:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:42:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-09 10:42:59,157 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-09 10:42:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:59,157 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-09 10:42:59,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-09 10:42:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:59,157 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:59,157 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:59,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-09 10:42:59,358 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:59,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1262863830, now seen corresponding path program 167 times [2020-10-09 10:42:59,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:59,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199312617] [2020-10-09 10:42:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:59,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199312617] [2020-10-09 10:42:59,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927642997] [2020-10-09 10:42:59,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:59,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:42:59,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:59,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:59,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:42:59,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:42:59,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:43:04,031 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 27 [2020-10-09 10:43:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:43:04,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:43:04,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:43:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719785878] [2020-10-09 10:43:04,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:43:04,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:43:04,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:43:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2020-10-09 10:43:04,034 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 18 states. [2020-10-09 10:43:09,132 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-09 10:43:11,312 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-09 10:43:17,832 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-10-09 10:43:28,097 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-09 10:43:48,957 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-09 10:44:17,824 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-09 10:44:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:48,192 INFO L93 Difference]: Finished difference Result 311 states and 731 transitions. [2020-10-09 10:44:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-09 10:44:48,194 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-09 10:44:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:48,194 INFO L225 Difference]: With dead ends: 311 [2020-10-09 10:44:48,195 INFO L226 Difference]: Without dead ends: 306 [2020-10-09 10:44:48,195 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=499, Invalid=1207, Unknown=16, NotChecked=0, Total=1722 [2020-10-09 10:44:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-09 10:44:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 165. [2020-10-09 10:44:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:44:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 409 transitions. [2020-10-09 10:44:48,206 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 409 transitions. Word has length 14 [2020-10-09 10:44:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:48,206 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 409 transitions. [2020-10-09 10:44:48,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:44:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 409 transitions. [2020-10-09 10:44:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:48,206 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:48,206 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:48,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-09 10:44:48,407 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:48,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1262871301, now seen corresponding path program 168 times [2020-10-09 10:44:48,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:48,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856118504] [2020-10-09 10:44:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:48,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856118504] [2020-10-09 10:44:48,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526232326] [2020-10-09 10:44:48,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:48,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:44:48,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:48,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:52,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:52,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:52,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675589193] [2020-10-09 10:44:52,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:52,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:52,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:44:52,810 INFO L87 Difference]: Start difference. First operand 165 states and 409 transitions. Second operand 17 states. [2020-10-09 10:44:57,293 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:45:01,615 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:45:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:02,595 INFO L93 Difference]: Finished difference Result 271 states and 639 transitions. [2020-10-09 10:45:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 10:45:02,597 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:02,598 INFO L225 Difference]: With dead ends: 271 [2020-10-09 10:45:02,598 INFO L226 Difference]: Without dead ends: 269 [2020-10-09 10:45:02,598 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=348, Invalid=841, Unknown=1, NotChecked=0, Total=1190 [2020-10-09 10:45:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-09 10:45:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 167. [2020-10-09 10:45:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:45:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-09 10:45:02,602 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-09 10:45:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:02,602 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-09 10:45:02,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-09 10:45:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:02,603 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:02,603 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:02,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-09 10:45:02,809 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1262892660, now seen corresponding path program 169 times [2020-10-09 10:45:02,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:02,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170909686] [2020-10-09 10:45:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:02,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170909686] [2020-10-09 10:45:02,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614738124] [2020-10-09 10:45:02,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:03,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:03,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:07,393 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_div_aux_mod_v_~j~0_554_43_92 Int) (v_~i~0_554 Int) (aux_div_v_~j~0_554_43 Int)) (let ((.cse0 (* 2 aux_div_aux_mod_v_~j~0_554_43_92)) (.cse1 (* 2 aux_div_v_~j~0_554_43))) (and (<= aux_div_v_~j~0_554_43 1) (<= v_~i~0_554 (+ .cse0 .cse1 3)) (<= c_~j~0 (+ .cse0 v_~i~0_554 2)) (<= (+ .cse0 .cse1 1) v_~i~0_554) (<= aux_div_aux_mod_v_~j~0_554_43_92 1) (<= c_~i~0 (+ v_~i~0_554 c_~j~0)) (<= (+ .cse1 c_~j~0) (* 2 v_~i~0_554))))) is different from true [2020-10-09 10:45:07,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:07,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:45:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:07,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:07,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:07,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140378830] [2020-10-09 10:45:07,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:07,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=162, Unknown=2, NotChecked=28, Total=272 [2020-10-09 10:45:07,487 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-09 10:45:08,066 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-09 10:45:12,246 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:45:20,638 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-09 10:45:33,712 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-10-09 10:45:34,026 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-09 10:46:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:06,211 INFO L93 Difference]: Finished difference Result 292 states and 717 transitions. [2020-10-09 10:46:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:46:06,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:06,213 INFO L225 Difference]: With dead ends: 292 [2020-10-09 10:46:06,213 INFO L226 Difference]: Without dead ends: 287 [2020-10-09 10:46:06,214 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 62.7s TimeCoverageRelationStatistics Valid=482, Invalid=1060, Unknown=22, NotChecked=76, Total=1640 [2020-10-09 10:46:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-09 10:46:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 168. [2020-10-09 10:46:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-09 10:46:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 421 transitions. [2020-10-09 10:46:06,216 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 421 transitions. Word has length 14 [2020-10-09 10:46:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:06,216 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 421 transitions. [2020-10-09 10:46:06,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 421 transitions. [2020-10-09 10:46:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:06,217 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:06,217 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:06,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-09 10:46:06,418 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1262893621, now seen corresponding path program 170 times [2020-10-09 10:46:06,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:06,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014944371] [2020-10-09 10:46:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:06,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014944371] [2020-10-09 10:46:06,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709224547] [2020-10-09 10:46:06,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:06,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:06,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:06,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:06,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:09,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:46:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:09,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:09,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:09,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620458199] [2020-10-09 10:46:09,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:09,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:09,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:46:09,215 INFO L87 Difference]: Start difference. First operand 168 states and 421 transitions. Second operand 17 states. [2020-10-09 10:46:09,916 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-09 10:46:10,436 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-09 10:46:11,024 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-09 10:46:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:12,190 INFO L93 Difference]: Finished difference Result 292 states and 701 transitions. [2020-10-09 10:46:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:46:12,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:12,193 INFO L225 Difference]: With dead ends: 292 [2020-10-09 10:46:12,193 INFO L226 Difference]: Without dead ends: 284 [2020-10-09 10:46:12,194 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=425, Invalid=980, Unknown=1, NotChecked=0, Total=1406 [2020-10-09 10:46:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-09 10:46:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 162. [2020-10-09 10:46:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:46:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 403 transitions. [2020-10-09 10:46:12,197 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 403 transitions. Word has length 14 [2020-10-09 10:46:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:12,198 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 403 transitions. [2020-10-09 10:46:12,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 403 transitions. [2020-10-09 10:46:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:12,198 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:12,198 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:12,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-09 10:46:12,399 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1263101941, now seen corresponding path program 171 times [2020-10-09 10:46:12,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:12,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281275985] [2020-10-09 10:46:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:12,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281275985] [2020-10-09 10:46:12,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985137247] [2020-10-09 10:46:12,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:12,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:46:12,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:13,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:13,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:13,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057623465] [2020-10-09 10:46:13,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:13,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:13,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:13,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:13,358 INFO L87 Difference]: Start difference. First operand 162 states and 403 transitions. Second operand 17 states. [2020-10-09 10:46:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:14,419 INFO L93 Difference]: Finished difference Result 231 states and 545 transitions. [2020-10-09 10:46:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:46:14,423 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:14,423 INFO L225 Difference]: With dead ends: 231 [2020-10-09 10:46:14,424 INFO L226 Difference]: Without dead ends: 229 [2020-10-09 10:46:14,424 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:46:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-09 10:46:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 162. [2020-10-09 10:46:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:46:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 403 transitions. [2020-10-09 10:46:14,429 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 403 transitions. Word has length 14 [2020-10-09 10:46:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:14,429 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 403 transitions. [2020-10-09 10:46:14,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:14,429 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 403 transitions. [2020-10-09 10:46:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:14,430 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:14,430 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:14,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-10-09 10:46:14,643 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:14,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1263765031, now seen corresponding path program 172 times [2020-10-09 10:46:14,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:14,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294321424] [2020-10-09 10:46:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:14,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294321424] [2020-10-09 10:46:14,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667161495] [2020-10-09 10:46:14,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:14,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:46:14,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:14,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:14,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:15,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:15,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:15,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268761985] [2020-10-09 10:46:15,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:15,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:15,525 INFO L87 Difference]: Start difference. First operand 162 states and 403 transitions. Second operand 17 states. [2020-10-09 10:46:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:17,176 INFO L93 Difference]: Finished difference Result 250 states and 594 transitions. [2020-10-09 10:46:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:46:17,178 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:17,179 INFO L225 Difference]: With dead ends: 250 [2020-10-09 10:46:17,179 INFO L226 Difference]: Without dead ends: 248 [2020-10-09 10:46:17,180 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:46:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-09 10:46:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 163. [2020-10-09 10:46:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:46:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 405 transitions. [2020-10-09 10:46:17,183 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 405 transitions. Word has length 14 [2020-10-09 10:46:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:17,183 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 405 transitions. [2020-10-09 10:46:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 405 transitions. [2020-10-09 10:46:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:17,184 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:17,184 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:17,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:17,384 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:17,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1263787351, now seen corresponding path program 173 times [2020-10-09 10:46:17,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:17,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875694286] [2020-10-09 10:46:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:17,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875694286] [2020-10-09 10:46:17,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468455362] [2020-10-09 10:46:17,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:17,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:46:17,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:17,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:17,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:17,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:46:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:18,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:18,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:18,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063207448] [2020-10-09 10:46:18,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:18,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:18,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:18,046 INFO L87 Difference]: Start difference. First operand 163 states and 405 transitions. Second operand 17 states. [2020-10-09 10:46:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:20,319 INFO L93 Difference]: Finished difference Result 288 states and 686 transitions. [2020-10-09 10:46:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:46:20,321 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:20,322 INFO L225 Difference]: With dead ends: 288 [2020-10-09 10:46:20,322 INFO L226 Difference]: Without dead ends: 283 [2020-10-09 10:46:20,323 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=426, Invalid=980, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:46:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-09 10:46:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 159. [2020-10-09 10:46:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 10:46:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 388 transitions. [2020-10-09 10:46:20,326 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 388 transitions. Word has length 14 [2020-10-09 10:46:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:20,326 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 388 transitions. [2020-10-09 10:46:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 388 transitions. [2020-10-09 10:46:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:20,326 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:20,326 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:20,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-10-09 10:46:20,527 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:20,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1463267670, now seen corresponding path program 174 times [2020-10-09 10:46:20,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:20,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599814495] [2020-10-09 10:46:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:20,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599814495] [2020-10-09 10:46:20,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893865401] [2020-10-09 10:46:20,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:20,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:46:20,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:20,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:21,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:21,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:21,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700577408] [2020-10-09 10:46:21,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:21,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:21,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:21,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:21,174 INFO L87 Difference]: Start difference. First operand 159 states and 388 transitions. Second operand 17 states. [2020-10-09 10:46:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:22,158 INFO L93 Difference]: Finished difference Result 236 states and 544 transitions. [2020-10-09 10:46:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:46:22,161 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:22,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:22,162 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:46:22,162 INFO L226 Difference]: Without dead ends: 234 [2020-10-09 10:46:22,162 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:46:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-09 10:46:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 163. [2020-10-09 10:46:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:46:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-09 10:46:22,166 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-09 10:46:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:22,166 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-09 10:46:22,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-09 10:46:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:22,167 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:22,167 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:22,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:22,368 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:22,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1463268631, now seen corresponding path program 175 times [2020-10-09 10:46:22,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:22,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836074592] [2020-10-09 10:46:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:22,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836074592] [2020-10-09 10:46:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465251426] [2020-10-09 10:46:22,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:22,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:22,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:23,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:23,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:23,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503175748] [2020-10-09 10:46:23,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:23,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:23,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:23,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:23,115 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-09 10:46:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:24,049 INFO L93 Difference]: Finished difference Result 246 states and 565 transitions. [2020-10-09 10:46:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:46:24,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:24,052 INFO L225 Difference]: With dead ends: 246 [2020-10-09 10:46:24,052 INFO L226 Difference]: Without dead ends: 244 [2020-10-09 10:46:24,053 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:46:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-09 10:46:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 163. [2020-10-09 10:46:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:46:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-09 10:46:24,056 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-09 10:46:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:24,056 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-09 10:46:24,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-09 10:46:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:24,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:24,057 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:24,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:24,257 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1463297461, now seen corresponding path program 176 times [2020-10-09 10:46:24,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:24,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047294045] [2020-10-09 10:46:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:24,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047294045] [2020-10-09 10:46:24,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967656246] [2020-10-09 10:46:24,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:24,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:24,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:24,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:24,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:24,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:24,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696543680] [2020-10-09 10:46:24,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:24,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:24,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:24,850 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-09 10:46:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:25,552 INFO L93 Difference]: Finished difference Result 239 states and 554 transitions. [2020-10-09 10:46:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:46:25,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:25,555 INFO L225 Difference]: With dead ends: 239 [2020-10-09 10:46:25,555 INFO L226 Difference]: Without dead ends: 237 [2020-10-09 10:46:25,556 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:46:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-09 10:46:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2020-10-09 10:46:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:46:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-09 10:46:25,559 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-09 10:46:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:25,559 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-09 10:46:25,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-09 10:46:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:25,560 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:25,560 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:25,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:25,761 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:25,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1464221943, now seen corresponding path program 177 times [2020-10-09 10:46:25,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:25,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62483078] [2020-10-09 10:46:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:25,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62483078] [2020-10-09 10:46:25,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105177067] [2020-10-09 10:46:25,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:26,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:46:26,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:26,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:26,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:26,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:26,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:26,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640708115] [2020-10-09 10:46:26,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:26,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:26,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:26,390 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-09 10:46:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:27,007 INFO L93 Difference]: Finished difference Result 229 states and 529 transitions. [2020-10-09 10:46:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:46:27,009 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:27,009 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:46:27,009 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:46:27,010 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:46:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:46:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 161. [2020-10-09 10:46:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-09 10:46:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 395 transitions. [2020-10-09 10:46:27,014 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 395 transitions. Word has length 14 [2020-10-09 10:46:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:27,014 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 395 transitions. [2020-10-09 10:46:27,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 395 transitions. [2020-10-09 10:46:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:27,014 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:27,014 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:27,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-09 10:46:27,215 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:27,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2100497160, now seen corresponding path program 178 times [2020-10-09 10:46:27,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:27,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729130651] [2020-10-09 10:46:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:27,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729130651] [2020-10-09 10:46:27,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036928131] [2020-10-09 10:46:27,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:27,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:46:27,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:27,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:27,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:27,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:27,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:27,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102225716] [2020-10-09 10:46:27,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:27,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:27,832 INFO L87 Difference]: Start difference. First operand 161 states and 395 transitions. Second operand 17 states. [2020-10-09 10:46:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:29,121 INFO L93 Difference]: Finished difference Result 261 states and 599 transitions. [2020-10-09 10:46:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:46:29,123 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:29,124 INFO L225 Difference]: With dead ends: 261 [2020-10-09 10:46:29,124 INFO L226 Difference]: Without dead ends: 259 [2020-10-09 10:46:29,125 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:46:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-09 10:46:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 164. [2020-10-09 10:46:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:46:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 406 transitions. [2020-10-09 10:46:29,128 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 406 transitions. Word has length 14 [2020-10-09 10:46:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:29,128 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 406 transitions. [2020-10-09 10:46:29,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 406 transitions. [2020-10-09 10:46:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:29,128 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:29,129 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:29,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:29,329 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:29,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2100498121, now seen corresponding path program 179 times [2020-10-09 10:46:29,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:29,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827780764] [2020-10-09 10:46:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:29,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827780764] [2020-10-09 10:46:29,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127586435] [2020-10-09 10:46:29,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:29,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:29,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:29,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:29,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:29,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:29,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:29,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386280189] [2020-10-09 10:46:29,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:29,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:29,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:29,997 INFO L87 Difference]: Start difference. First operand 164 states and 406 transitions. Second operand 17 states. [2020-10-09 10:46:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:31,300 INFO L93 Difference]: Finished difference Result 271 states and 622 transitions. [2020-10-09 10:46:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:46:31,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:31,303 INFO L225 Difference]: With dead ends: 271 [2020-10-09 10:46:31,303 INFO L226 Difference]: Without dead ends: 269 [2020-10-09 10:46:31,303 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:46:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-09 10:46:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 166. [2020-10-09 10:46:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:46:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 413 transitions. [2020-10-09 10:46:31,307 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 413 transitions. Word has length 14 [2020-10-09 10:46:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:31,307 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 413 transitions. [2020-10-09 10:46:31,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 413 transitions. [2020-10-09 10:46:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:31,308 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:31,308 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:31,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-09 10:46:31,516 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2100526951, now seen corresponding path program 180 times [2020-10-09 10:46:31,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:31,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22563385] [2020-10-09 10:46:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22563385] [2020-10-09 10:46:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449252678] [2020-10-09 10:46:31,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:31,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:46:31,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:31,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:32,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:32,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:32,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579960035] [2020-10-09 10:46:32,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:32,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:32,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:32,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:32,131 INFO L87 Difference]: Start difference. First operand 166 states and 413 transitions. Second operand 17 states. [2020-10-09 10:46:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:33,167 INFO L93 Difference]: Finished difference Result 253 states and 588 transitions. [2020-10-09 10:46:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:46:33,169 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:33,170 INFO L225 Difference]: With dead ends: 253 [2020-10-09 10:46:33,170 INFO L226 Difference]: Without dead ends: 251 [2020-10-09 10:46:33,171 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:46:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-09 10:46:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 165. [2020-10-09 10:46:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:46:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 410 transitions. [2020-10-09 10:46:33,174 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 410 transitions. Word has length 14 [2020-10-09 10:46:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:33,174 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 410 transitions. [2020-10-09 10:46:33,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 410 transitions. [2020-10-09 10:46:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:33,175 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:33,175 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:33,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-09 10:46:33,376 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:33,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2121052950, now seen corresponding path program 181 times [2020-10-09 10:46:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:33,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185579314] [2020-10-09 10:46:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:33,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185579314] [2020-10-09 10:46:33,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225819017] [2020-10-09 10:46:33,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:33,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:33,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:34,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:34,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:34,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712284032] [2020-10-09 10:46:34,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:34,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:34,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:34,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:34,061 INFO L87 Difference]: Start difference. First operand 165 states and 410 transitions. Second operand 17 states. [2020-10-09 10:46:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:35,516 INFO L93 Difference]: Finished difference Result 268 states and 622 transitions. [2020-10-09 10:46:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:46:35,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:35,520 INFO L225 Difference]: With dead ends: 268 [2020-10-09 10:46:35,520 INFO L226 Difference]: Without dead ends: 266 [2020-10-09 10:46:35,520 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:46:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-09 10:46:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 167. [2020-10-09 10:46:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:46:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-09 10:46:35,524 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-09 10:46:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:35,524 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-09 10:46:35,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-09 10:46:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:35,524 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:35,524 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:35,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:35,725 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:35,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2121053911, now seen corresponding path program 182 times [2020-10-09 10:46:35,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:35,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979576079] [2020-10-09 10:46:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:35,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979576079] [2020-10-09 10:46:35,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389645347] [2020-10-09 10:46:35,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:36,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:36,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:36,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:36,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:36,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:36,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:36,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102139230] [2020-10-09 10:46:36,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:36,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:36,410 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-09 10:46:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:37,779 INFO L93 Difference]: Finished difference Result 271 states and 630 transitions. [2020-10-09 10:46:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 10:46:37,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:37,783 INFO L225 Difference]: With dead ends: 271 [2020-10-09 10:46:37,783 INFO L226 Difference]: Without dead ends: 269 [2020-10-09 10:46:37,784 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:46:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-09 10:46:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-09 10:46:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:46:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 424 transitions. [2020-10-09 10:46:37,786 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 424 transitions. Word has length 14 [2020-10-09 10:46:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:37,786 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 424 transitions. [2020-10-09 10:46:37,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 424 transitions. [2020-10-09 10:46:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:37,787 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:37,787 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:37,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-09 10:46:37,988 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:37,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2121716040, now seen corresponding path program 183 times [2020-10-09 10:46:37,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:37,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813664489] [2020-10-09 10:46:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:38,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813664489] [2020-10-09 10:46:38,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61282313] [2020-10-09 10:46:38,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:38,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:46:38,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:38,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:38,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:38,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:38,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:38,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644412610] [2020-10-09 10:46:38,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:38,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:38,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:38,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:38,707 INFO L87 Difference]: Start difference. First operand 169 states and 424 transitions. Second operand 17 states. [2020-10-09 10:46:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:40,454 INFO L93 Difference]: Finished difference Result 262 states and 620 transitions. [2020-10-09 10:46:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:46:40,457 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:40,458 INFO L225 Difference]: With dead ends: 262 [2020-10-09 10:46:40,458 INFO L226 Difference]: Without dead ends: 260 [2020-10-09 10:46:40,458 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=408, Invalid=924, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:46:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-09 10:46:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 171. [2020-10-09 10:46:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 10:46:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-09 10:46:40,463 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-09 10:46:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:40,463 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-09 10:46:40,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-09 10:46:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:40,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:40,464 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:40,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-10-09 10:46:40,665 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2121737399, now seen corresponding path program 184 times [2020-10-09 10:46:40,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:40,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481360284] [2020-10-09 10:46:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:40,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481360284] [2020-10-09 10:46:40,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518954347] [2020-10-09 10:46:40,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:40,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:46:40,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:41,307 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:46:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:41,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:41,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:41,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694096245] [2020-10-09 10:46:41,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:41,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:41,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:41,338 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-09 10:46:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:42,975 INFO L93 Difference]: Finished difference Result 248 states and 600 transitions. [2020-10-09 10:46:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:46:42,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:42,979 INFO L225 Difference]: With dead ends: 248 [2020-10-09 10:46:42,979 INFO L226 Difference]: Without dead ends: 243 [2020-10-09 10:46:42,979 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=451, Invalid=955, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:46:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-09 10:46:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2020-10-09 10:46:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 10:46:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-09 10:46:42,983 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-09 10:46:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:42,983 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-09 10:46:42,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-09 10:46:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:42,984 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:42,984 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:43,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:43,184 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:43,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2121738360, now seen corresponding path program 185 times [2020-10-09 10:46:43,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:43,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533881369] [2020-10-09 10:46:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:43,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533881369] [2020-10-09 10:46:43,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703715244] [2020-10-09 10:46:43,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:43,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:46:43,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:43,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:43,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:43,856 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:46:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:43,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:43,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:43,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062551353] [2020-10-09 10:46:43,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:43,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:43,966 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-09 10:46:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:46,242 INFO L93 Difference]: Finished difference Result 287 states and 694 transitions. [2020-10-09 10:46:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:46:46,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:46,245 INFO L225 Difference]: With dead ends: 287 [2020-10-09 10:46:46,245 INFO L226 Difference]: Without dead ends: 282 [2020-10-09 10:46:46,245 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:46:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-09 10:46:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 169. [2020-10-09 10:46:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:46:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 424 transitions. [2020-10-09 10:46:46,248 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 424 transitions. Word has length 14 [2020-10-09 10:46:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:46,248 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 424 transitions. [2020-10-09 10:46:46,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 424 transitions. [2020-10-09 10:46:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:46,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:46,249 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:46,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:46,450 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2121745831, now seen corresponding path program 186 times [2020-10-09 10:46:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:46,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206711857] [2020-10-09 10:46:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:46,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206711857] [2020-10-09 10:46:46,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032290229] [2020-10-09 10:46:46,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:46,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:46:46,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:46,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:47,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:47,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:47,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409314939] [2020-10-09 10:46:47,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:47,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:47,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:47,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:47,562 INFO L87 Difference]: Start difference. First operand 169 states and 424 transitions. Second operand 17 states. [2020-10-09 10:46:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:49,792 INFO L93 Difference]: Finished difference Result 284 states and 678 transitions. [2020-10-09 10:46:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:46:49,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:49,797 INFO L225 Difference]: With dead ends: 284 [2020-10-09 10:46:49,797 INFO L226 Difference]: Without dead ends: 282 [2020-10-09 10:46:49,798 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 10:46:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-09 10:46:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 171. [2020-10-09 10:46:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 10:46:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-09 10:46:49,801 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-09 10:46:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:49,801 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-09 10:46:49,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-09 10:46:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:49,802 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:49,802 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:50,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:50,003 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2121767190, now seen corresponding path program 187 times [2020-10-09 10:46:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:50,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648126893] [2020-10-09 10:46:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:50,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648126893] [2020-10-09 10:46:50,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089640967] [2020-10-09 10:46:50,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:50,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:50,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:50,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:46:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:50,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:50,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:50,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554067319] [2020-10-09 10:46:50,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:50,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:50,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:50,868 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-09 10:46:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:53,303 INFO L93 Difference]: Finished difference Result 289 states and 702 transitions. [2020-10-09 10:46:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:46:53,306 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:53,307 INFO L225 Difference]: With dead ends: 289 [2020-10-09 10:46:53,307 INFO L226 Difference]: Without dead ends: 284 [2020-10-09 10:46:53,307 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:46:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-09 10:46:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 172. [2020-10-09 10:46:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-09 10:46:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 436 transitions. [2020-10-09 10:46:53,312 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 436 transitions. Word has length 14 [2020-10-09 10:46:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:53,312 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 436 transitions. [2020-10-09 10:46:53,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 436 transitions. [2020-10-09 10:46:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:53,312 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:53,313 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:53,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:53,513 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:53,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2121768151, now seen corresponding path program 188 times [2020-10-09 10:46:53,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:53,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538826276] [2020-10-09 10:46:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:53,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538826276] [2020-10-09 10:46:53,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802099889] [2020-10-09 10:46:53,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:53,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:53,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:53,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:53,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:54,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:46:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:54,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:54,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:54,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138219923] [2020-10-09 10:46:54,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:54,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:54,233 INFO L87 Difference]: Start difference. First operand 172 states and 436 transitions. Second operand 17 states. [2020-10-09 10:46:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:56,793 INFO L93 Difference]: Finished difference Result 312 states and 753 transitions. [2020-10-09 10:46:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:46:56,794 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:56,795 INFO L225 Difference]: With dead ends: 312 [2020-10-09 10:46:56,795 INFO L226 Difference]: Without dead ends: 304 [2020-10-09 10:46:56,795 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:46:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-09 10:46:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 165. [2020-10-09 10:46:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:46:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 410 transitions. [2020-10-09 10:46:56,799 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 410 transitions. Word has length 14 [2020-10-09 10:46:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:56,799 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 410 transitions. [2020-10-09 10:46:56,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 410 transitions. [2020-10-09 10:46:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:56,799 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:56,799 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:57,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:57,000 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2121976471, now seen corresponding path program 189 times [2020-10-09 10:46:57,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:57,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527679577] [2020-10-09 10:46:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:57,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527679577] [2020-10-09 10:46:57,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072933714] [2020-10-09 10:46:57,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:57,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:46:57,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:57,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:57,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:57,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536756391] [2020-10-09 10:46:57,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:57,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:57,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:57,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:57,582 INFO L87 Difference]: Start difference. First operand 165 states and 410 transitions. Second operand 17 states. [2020-10-09 10:46:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:58,891 INFO L93 Difference]: Finished difference Result 262 states and 617 transitions. [2020-10-09 10:46:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:46:58,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:58,895 INFO L225 Difference]: With dead ends: 262 [2020-10-09 10:46:58,895 INFO L226 Difference]: Without dead ends: 260 [2020-10-09 10:46:58,895 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:46:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-09 10:46:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 167. [2020-10-09 10:46:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:46:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-09 10:46:58,899 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-09 10:46:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:58,899 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-09 10:46:58,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-09 10:46:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:46:58,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:58,899 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:59,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-09 10:46:59,100 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:59,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2122639561, now seen corresponding path program 190 times [2020-10-09 10:46:59,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:59,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144198385] [2020-10-09 10:46:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:59,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144198385] [2020-10-09 10:46:59,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533663232] [2020-10-09 10:46:59,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:59,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:46:59,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:59,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:59,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:59,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:59,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045755334] [2020-10-09 10:46:59,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:59,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:59,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:59,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:59,674 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-09 10:47:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:01,093 INFO L93 Difference]: Finished difference Result 271 states and 650 transitions. [2020-10-09 10:47:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:47:01,095 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:01,096 INFO L225 Difference]: With dead ends: 271 [2020-10-09 10:47:01,096 INFO L226 Difference]: Without dead ends: 269 [2020-10-09 10:47:01,096 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=396, Invalid=936, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:47:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-09 10:47:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-09 10:47:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:47:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-09 10:47:01,099 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-09 10:47:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:01,099 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-09 10:47:01,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-09 10:47:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:01,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:01,100 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:01,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-09 10:47:01,300 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2122660920, now seen corresponding path program 191 times [2020-10-09 10:47:01,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:01,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179036813] [2020-10-09 10:47:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:01,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179036813] [2020-10-09 10:47:01,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722137411] [2020-10-09 10:47:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:01,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:47:01,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:01,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:01,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:01,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:47:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:01,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:01,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:01,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140033425] [2020-10-09 10:47:01,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:01,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:01,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:01,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:01,842 INFO L87 Difference]: Start difference. First operand 169 states and 426 transitions. Second operand 17 states. [2020-10-09 10:47:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:04,020 INFO L93 Difference]: Finished difference Result 296 states and 714 transitions. [2020-10-09 10:47:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:47:04,024 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:04,025 INFO L225 Difference]: With dead ends: 296 [2020-10-09 10:47:04,025 INFO L226 Difference]: Without dead ends: 288 [2020-10-09 10:47:04,025 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:47:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-09 10:47:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 171. [2020-10-09 10:47:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 10:47:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 436 transitions. [2020-10-09 10:47:04,028 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 436 transitions. Word has length 14 [2020-10-09 10:47:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:04,029 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 436 transitions. [2020-10-09 10:47:04,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 436 transitions. [2020-10-09 10:47:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:04,029 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:04,029 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:04,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-10-09 10:47:04,230 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:04,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:04,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2122661881, now seen corresponding path program 192 times [2020-10-09 10:47:04,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:04,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400538270] [2020-10-09 10:47:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:04,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400538270] [2020-10-09 10:47:04,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472082316] [2020-10-09 10:47:04,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:04,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:47:04,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:04,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:04,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:04,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:47:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:04,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:04,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072022162] [2020-10-09 10:47:04,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:04,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:04,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:04,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:04,917 INFO L87 Difference]: Start difference. First operand 171 states and 436 transitions. Second operand 17 states. [2020-10-09 10:47:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:06,976 INFO L93 Difference]: Finished difference Result 298 states and 732 transitions. [2020-10-09 10:47:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:47:06,980 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:06,981 INFO L225 Difference]: With dead ends: 298 [2020-10-09 10:47:06,981 INFO L226 Difference]: Without dead ends: 290 [2020-10-09 10:47:06,981 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:47:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-09 10:47:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 169. [2020-10-09 10:47:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:47:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 429 transitions. [2020-10-09 10:47:06,991 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 429 transitions. Word has length 14 [2020-10-09 10:47:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 429 transitions. [2020-10-09 10:47:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 429 transitions. [2020-10-09 10:47:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:06,991 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:06,991 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:07,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-09 10:47:07,192 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2122690711, now seen corresponding path program 193 times [2020-10-09 10:47:07,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:07,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20653188] [2020-10-09 10:47:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:07,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20653188] [2020-10-09 10:47:07,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788369487] [2020-10-09 10:47:07,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:07,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:07,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:07,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:47:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:07,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:07,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:07,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581065527] [2020-10-09 10:47:07,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:07,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:07,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:07,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:07,775 INFO L87 Difference]: Start difference. First operand 169 states and 429 transitions. Second operand 17 states. [2020-10-09 10:47:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:09,973 INFO L93 Difference]: Finished difference Result 291 states and 709 transitions. [2020-10-09 10:47:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:47:09,976 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:09,977 INFO L225 Difference]: With dead ends: 291 [2020-10-09 10:47:09,977 INFO L226 Difference]: Without dead ends: 283 [2020-10-09 10:47:09,978 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:47:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-09 10:47:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 167. [2020-10-09 10:47:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:47:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-09 10:47:09,982 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-09 10:47:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:09,982 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-09 10:47:09,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-09 10:47:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:09,982 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:09,982 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:10,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-10-09 10:47:10,183 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:10,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2145285195, now seen corresponding path program 194 times [2020-10-09 10:47:10,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:10,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860036647] [2020-10-09 10:47:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:10,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860036647] [2020-10-09 10:47:10,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837116974] [2020-10-09 10:47:10,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:10,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:47:10,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:10,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:10,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:10,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:10,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:10,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783233208] [2020-10-09 10:47:10,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:10,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:10,920 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-09 10:47:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:12,673 INFO L93 Difference]: Finished difference Result 265 states and 622 transitions. [2020-10-09 10:47:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:47:12,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:12,677 INFO L225 Difference]: With dead ends: 265 [2020-10-09 10:47:12,677 INFO L226 Difference]: Without dead ends: 263 [2020-10-09 10:47:12,678 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:47:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-09 10:47:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-10-09 10:47:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:47:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-09 10:47:12,682 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-09 10:47:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:12,682 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-09 10:47:12,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-09 10:47:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:12,682 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:12,683 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:12,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:12,883 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2144622105, now seen corresponding path program 195 times [2020-10-09 10:47:12,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:12,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606729114] [2020-10-09 10:47:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:13,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606729114] [2020-10-09 10:47:13,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561941527] [2020-10-09 10:47:13,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:13,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:47:13,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:13,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:13,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:13,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:13,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:13,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096271860] [2020-10-09 10:47:13,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:13,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:13,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:13,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:13,637 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-09 10:47:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:15,735 INFO L93 Difference]: Finished difference Result 262 states and 627 transitions. [2020-10-09 10:47:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:47:15,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:15,740 INFO L225 Difference]: With dead ends: 262 [2020-10-09 10:47:15,740 INFO L226 Difference]: Without dead ends: 260 [2020-10-09 10:47:15,740 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:47:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-09 10:47:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 169. [2020-10-09 10:47:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:47:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-09 10:47:15,744 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-09 10:47:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:15,744 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-09 10:47:15,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-09 10:47:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:15,745 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:15,745 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:15,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-10-09 10:47:15,945 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2144599785, now seen corresponding path program 196 times [2020-10-09 10:47:15,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:15,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667830968] [2020-10-09 10:47:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667830968] [2020-10-09 10:47:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422351812] [2020-10-09 10:47:16,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:16,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:47:16,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:16,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:16,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:16,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:47:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:16,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:47:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361803187] [2020-10-09 10:47:16,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:47:16,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:47:16,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:47:16,608 INFO L87 Difference]: Start difference. First operand 169 states and 426 transitions. Second operand 17 states. [2020-10-09 10:47:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:19,820 INFO L93 Difference]: Finished difference Result 285 states and 688 transitions. [2020-10-09 10:47:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:47:19,823 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:47:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:19,824 INFO L225 Difference]: With dead ends: 285 [2020-10-09 10:47:19,824 INFO L226 Difference]: Without dead ends: 280 [2020-10-09 10:47:19,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 10:47:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-09 10:47:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 167. [2020-10-09 10:47:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:47:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-09 10:47:19,828 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-09 10:47:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:19,828 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-09 10:47:19,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:47:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-09 10:47:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:47:19,828 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:19,828 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:20,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:20,029 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:20,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:20,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2144570955, now seen corresponding path program 197 times [2020-10-09 10:47:20,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:20,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714138575] [2020-10-09 10:47:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:20,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714138575] [2020-10-09 10:47:20,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724539613] [2020-10-09 10:47:20,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:20,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:47:20,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:20,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:47:20,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:24,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:47:29,004 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2020-10-09 10:47:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:29,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:29,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:47:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254004196] [2020-10-09 10:47:29,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:47:29,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:47:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=220, Unknown=3, NotChecked=0, Total=306 [2020-10-09 10:47:29,007 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 18 states. [2020-10-09 10:47:33,315 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-09 10:47:33,897 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2020-10-09 10:47:38,225 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-09 10:47:38,476 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 23 [2020-10-09 10:47:41,161 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 22 [2020-10-09 10:47:43,514 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-09 10:48:08,978 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-09 10:49:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:01,360 INFO L93 Difference]: Finished difference Result 302 states and 718 transitions. [2020-10-09 10:49:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:49:01,362 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-09 10:49:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:01,363 INFO L225 Difference]: With dead ends: 302 [2020-10-09 10:49:01,363 INFO L226 Difference]: Without dead ends: 297 [2020-10-09 10:49:01,363 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=556, Invalid=1408, Unknown=16, NotChecked=0, Total=1980 [2020-10-09 10:49:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-09 10:49:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 166. [2020-10-09 10:49:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:49:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 414 transitions. [2020-10-09 10:49:01,372 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 414 transitions. Word has length 14 [2020-10-09 10:49:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:01,372 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 414 transitions. [2020-10-09 10:49:01,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:49:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 414 transitions. [2020-10-09 10:49:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:01,372 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:01,373 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:01,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:01,573 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2143668793, now seen corresponding path program 198 times [2020-10-09 10:49:01,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:01,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408687827] [2020-10-09 10:49:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:01,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408687827] [2020-10-09 10:49:01,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575532792] [2020-10-09 10:49:01,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:01,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:49:01,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:01,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:02,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:02,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:02,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715326938] [2020-10-09 10:49:02,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:02,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:02,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:02,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:02,208 INFO L87 Difference]: Start difference. First operand 166 states and 414 transitions. Second operand 17 states. [2020-10-09 10:49:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:02,981 INFO L93 Difference]: Finished difference Result 219 states and 516 transitions. [2020-10-09 10:49:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:49:02,984 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:02,985 INFO L225 Difference]: With dead ends: 219 [2020-10-09 10:49:02,985 INFO L226 Difference]: Without dead ends: 217 [2020-10-09 10:49:02,985 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:49:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-09 10:49:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 167. [2020-10-09 10:49:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:49:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-09 10:49:02,989 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-09 10:49:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:02,989 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-09 10:49:02,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-09 10:49:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:02,990 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:02,990 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:03,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:03,190 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2143646473, now seen corresponding path program 199 times [2020-10-09 10:49:03,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255262540] [2020-10-09 10:49:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:03,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255262540] [2020-10-09 10:49:03,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905342481] [2020-10-09 10:49:03,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:03,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:03,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:03,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:49:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:03,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:03,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:03,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967735141] [2020-10-09 10:49:03,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:03,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:03,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:03,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:03,777 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-09 10:49:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:04,793 INFO L93 Difference]: Finished difference Result 229 states and 538 transitions. [2020-10-09 10:49:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:49:04,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:04,802 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:49:04,802 INFO L226 Difference]: Without dead ends: 224 [2020-10-09 10:49:04,802 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-09 10:49:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 158. [2020-10-09 10:49:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-09 10:49:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 386 transitions. [2020-10-09 10:49:04,805 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 386 transitions. Word has length 14 [2020-10-09 10:49:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:04,805 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 386 transitions. [2020-10-09 10:49:04,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 386 transitions. [2020-10-09 10:49:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:04,806 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:04,806 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:05,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-09 10:49:05,007 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash -255670682, now seen corresponding path program 200 times [2020-10-09 10:49:05,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:05,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344577507] [2020-10-09 10:49:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:05,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344577507] [2020-10-09 10:49:05,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670696208] [2020-10-09 10:49:05,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:05,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:49:05,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:05,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:05,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:05,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:05,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289059807] [2020-10-09 10:49:05,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:05,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:05,733 INFO L87 Difference]: Start difference. First operand 158 states and 386 transitions. Second operand 17 states. [2020-10-09 10:49:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:06,455 INFO L93 Difference]: Finished difference Result 229 states and 528 transitions. [2020-10-09 10:49:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:49:06,457 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:06,457 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:49:06,457 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:49:06,457 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:49:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:49:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 161. [2020-10-09 10:49:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-09 10:49:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 395 transitions. [2020-10-09 10:49:06,460 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 395 transitions. Word has length 14 [2020-10-09 10:49:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:06,460 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 395 transitions. [2020-10-09 10:49:06,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 395 transitions. [2020-10-09 10:49:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:06,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:06,464 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-10-09 10:49:06,665 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:06,666 INFO L82 PathProgramCache]: Analyzing trace with hash -255669721, now seen corresponding path program 201 times [2020-10-09 10:49:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:06,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142263288] [2020-10-09 10:49:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:06,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142263288] [2020-10-09 10:49:06,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750524396] [2020-10-09 10:49:06,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:06,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:49:06,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:07,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:07,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:07,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:07,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:07,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382380217] [2020-10-09 10:49:07,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:07,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:07,465 INFO L87 Difference]: Start difference. First operand 161 states and 395 transitions. Second operand 17 states. [2020-10-09 10:49:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:08,470 INFO L93 Difference]: Finished difference Result 237 states and 545 transitions. [2020-10-09 10:49:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:49:08,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:08,474 INFO L225 Difference]: With dead ends: 237 [2020-10-09 10:49:08,474 INFO L226 Difference]: Without dead ends: 235 [2020-10-09 10:49:08,475 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:49:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-09 10:49:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 160. [2020-10-09 10:49:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:49:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 392 transitions. [2020-10-09 10:49:08,478 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 392 transitions. Word has length 14 [2020-10-09 10:49:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:08,478 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 392 transitions. [2020-10-09 10:49:08,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 392 transitions. [2020-10-09 10:49:08,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:08,479 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:08,479 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:08,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-10-09 10:49:08,683 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash -255640891, now seen corresponding path program 202 times [2020-10-09 10:49:08,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:08,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154878816] [2020-10-09 10:49:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:08,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154878816] [2020-10-09 10:49:08,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262999408] [2020-10-09 10:49:08,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:09,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:49:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:09,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:09,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:09,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:09,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253591752] [2020-10-09 10:49:09,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:09,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:09,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:09,754 INFO L87 Difference]: Start difference. First operand 160 states and 392 transitions. Second operand 17 states. [2020-10-09 10:49:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:11,295 INFO L93 Difference]: Finished difference Result 246 states and 562 transitions. [2020-10-09 10:49:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:49:11,299 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:11,300 INFO L225 Difference]: With dead ends: 246 [2020-10-09 10:49:11,300 INFO L226 Difference]: Without dead ends: 244 [2020-10-09 10:49:11,300 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-09 10:49:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 164. [2020-10-09 10:49:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:49:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 403 transitions. [2020-10-09 10:49:11,304 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 403 transitions. Word has length 14 [2020-10-09 10:49:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:11,304 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 403 transitions. [2020-10-09 10:49:11,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 403 transitions. [2020-10-09 10:49:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:11,305 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:11,305 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:11,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-10-09 10:49:11,511 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:11,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:11,512 INFO L82 PathProgramCache]: Analyzing trace with hash -254746200, now seen corresponding path program 203 times [2020-10-09 10:49:11,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:11,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113502969] [2020-10-09 10:49:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:11,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113502969] [2020-10-09 10:49:11,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525798966] [2020-10-09 10:49:11,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:11,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:49:11,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:12,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:12,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:12,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373935718] [2020-10-09 10:49:12,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:12,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:12,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:12,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:12,343 INFO L87 Difference]: Start difference. First operand 164 states and 403 transitions. Second operand 17 states. [2020-10-09 10:49:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:13,361 INFO L93 Difference]: Finished difference Result 245 states and 560 transitions. [2020-10-09 10:49:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:49:13,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:13,366 INFO L225 Difference]: With dead ends: 245 [2020-10-09 10:49:13,366 INFO L226 Difference]: Without dead ends: 243 [2020-10-09 10:49:13,366 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:49:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-09 10:49:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 163. [2020-10-09 10:49:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:49:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 399 transitions. [2020-10-09 10:49:13,370 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 399 transitions. Word has length 14 [2020-10-09 10:49:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:13,370 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 399 transitions. [2020-10-09 10:49:13,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 399 transitions. [2020-10-09 10:49:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:13,371 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:13,371 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:13,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-10-09 10:49:13,572 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:13,572 INFO L82 PathProgramCache]: Analyzing trace with hash -227041531, now seen corresponding path program 204 times [2020-10-09 10:49:13,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:13,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306100639] [2020-10-09 10:49:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:13,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306100639] [2020-10-09 10:49:13,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709982375] [2020-10-09 10:49:13,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:13,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:49:13,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:13,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:13,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:14,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:14,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:14,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889644130] [2020-10-09 10:49:14,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:14,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:14,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:14,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:14,403 INFO L87 Difference]: Start difference. First operand 163 states and 399 transitions. Second operand 17 states. [2020-10-09 10:49:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:15,267 INFO L93 Difference]: Finished difference Result 239 states and 549 transitions. [2020-10-09 10:49:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:49:15,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:15,271 INFO L225 Difference]: With dead ends: 239 [2020-10-09 10:49:15,271 INFO L226 Difference]: Without dead ends: 237 [2020-10-09 10:49:15,271 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:49:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-09 10:49:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 162. [2020-10-09 10:49:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:49:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 396 transitions. [2020-10-09 10:49:15,275 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 396 transitions. Word has length 14 [2020-10-09 10:49:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:15,275 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 396 transitions. [2020-10-09 10:49:15,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 396 transitions. [2020-10-09 10:49:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:15,276 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:15,276 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:15,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-10-09 10:49:15,476 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:15,477 INFO L82 PathProgramCache]: Analyzing trace with hash -226088219, now seen corresponding path program 205 times [2020-10-09 10:49:15,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:15,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014295592] [2020-10-09 10:49:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:15,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014295592] [2020-10-09 10:49:15,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789882596] [2020-10-09 10:49:15,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:15,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:15,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:16,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:16,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:16,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566074628] [2020-10-09 10:49:16,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:16,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:16,224 INFO L87 Difference]: Start difference. First operand 162 states and 396 transitions. Second operand 17 states. [2020-10-09 10:49:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:16,870 INFO L93 Difference]: Finished difference Result 220 states and 508 transitions. [2020-10-09 10:49:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:49:16,874 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:16,875 INFO L225 Difference]: With dead ends: 220 [2020-10-09 10:49:16,875 INFO L226 Difference]: Without dead ends: 218 [2020-10-09 10:49:16,876 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:49:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-09 10:49:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 156. [2020-10-09 10:49:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-09 10:49:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 381 transitions. [2020-10-09 10:49:16,879 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 381 transitions. Word has length 14 [2020-10-09 10:49:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:16,879 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 381 transitions. [2020-10-09 10:49:16,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 381 transitions. [2020-10-09 10:49:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:16,880 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:16,880 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:17,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-10-09 10:49:17,081 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392972, now seen corresponding path program 206 times [2020-10-09 10:49:17,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:17,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907945362] [2020-10-09 10:49:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:17,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907945362] [2020-10-09 10:49:17,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204526716] [2020-10-09 10:49:17,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:17,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:49:17,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:17,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:17,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:17,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:17,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:17,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226359042] [2020-10-09 10:49:17,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:17,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:17,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:17,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:17,841 INFO L87 Difference]: Start difference. First operand 156 states and 381 transitions. Second operand 17 states. [2020-10-09 10:49:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:18,621 INFO L93 Difference]: Finished difference Result 229 states and 528 transitions. [2020-10-09 10:49:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:49:18,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:18,623 INFO L225 Difference]: With dead ends: 229 [2020-10-09 10:49:18,623 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:49:18,623 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:49:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:49:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-09 10:49:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-09 10:49:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 395 transitions. [2020-10-09 10:49:18,626 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 395 transitions. Word has length 14 [2020-10-09 10:49:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:18,627 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 395 transitions. [2020-10-09 10:49:18,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 395 transitions. [2020-10-09 10:49:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:18,627 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:18,627 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:18,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-10-09 10:49:18,830 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392011, now seen corresponding path program 207 times [2020-10-09 10:49:18,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:18,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834300927] [2020-10-09 10:49:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:19,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834300927] [2020-10-09 10:49:19,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708665669] [2020-10-09 10:49:19,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:19,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:49:19,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:19,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:19,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:19,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284606463] [2020-10-09 10:49:19,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:19,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:19,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:19,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:19,618 INFO L87 Difference]: Start difference. First operand 160 states and 395 transitions. Second operand 17 states. [2020-10-09 10:49:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:20,461 INFO L93 Difference]: Finished difference Result 233 states and 536 transitions. [2020-10-09 10:49:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:49:20,464 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:20,465 INFO L225 Difference]: With dead ends: 233 [2020-10-09 10:49:20,465 INFO L226 Difference]: Without dead ends: 231 [2020-10-09 10:49:20,465 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:49:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-09 10:49:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 159. [2020-10-09 10:49:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-09 10:49:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 392 transitions. [2020-10-09 10:49:20,467 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 392 transitions. Word has length 14 [2020-10-09 10:49:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:20,467 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 392 transitions. [2020-10-09 10:49:20,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 392 transitions. [2020-10-09 10:49:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:20,468 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:20,468 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:20,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:20,669 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1976363181, now seen corresponding path program 208 times [2020-10-09 10:49:20,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:20,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560170172] [2020-10-09 10:49:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560170172] [2020-10-09 10:49:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474200102] [2020-10-09 10:49:20,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:20,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:49:20,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:20,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:20,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:25,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:25,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:25,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971716252] [2020-10-09 10:49:25,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:25,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:25,461 INFO L87 Difference]: Start difference. First operand 159 states and 392 transitions. Second operand 17 states. [2020-10-09 10:49:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:27,147 INFO L93 Difference]: Finished difference Result 256 states and 582 transitions. [2020-10-09 10:49:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:49:27,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:27,152 INFO L225 Difference]: With dead ends: 256 [2020-10-09 10:49:27,152 INFO L226 Difference]: Without dead ends: 254 [2020-10-09 10:49:27,152 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:49:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-09 10:49:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 163. [2020-10-09 10:49:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-09 10:49:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 403 transitions. [2020-10-09 10:49:27,156 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 403 transitions. Word has length 14 [2020-10-09 10:49:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:27,156 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 403 transitions. [2020-10-09 10:49:27,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 403 transitions. [2020-10-09 10:49:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:27,157 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:27,157 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:27,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:27,358 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468490, now seen corresponding path program 209 times [2020-10-09 10:49:27,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:27,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423233093] [2020-10-09 10:49:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:27,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423233093] [2020-10-09 10:49:27,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308271146] [2020-10-09 10:49:27,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:27,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:49:27,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:27,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:27,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:28,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:28,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:28,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916365859] [2020-10-09 10:49:28,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:28,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:28,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:28,151 INFO L87 Difference]: Start difference. First operand 163 states and 403 transitions. Second operand 17 states. [2020-10-09 10:49:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:29,401 INFO L93 Difference]: Finished difference Result 246 states and 562 transitions. [2020-10-09 10:49:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:49:29,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:29,405 INFO L225 Difference]: With dead ends: 246 [2020-10-09 10:49:29,406 INFO L226 Difference]: Without dead ends: 244 [2020-10-09 10:49:29,406 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-09 10:49:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 162. [2020-10-09 10:49:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 10:49:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-09 10:49:29,409 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 14 [2020-10-09 10:49:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:29,409 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-09 10:49:29,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-09 10:49:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:29,410 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:29,410 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:29,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:29,611 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1339163482, now seen corresponding path program 210 times [2020-10-09 10:49:29,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:29,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034954177] [2020-10-09 10:49:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:29,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034954177] [2020-10-09 10:49:29,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300775638] [2020-10-09 10:49:29,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:29,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:49:29,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:29,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:29,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:30,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:30,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:30,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773591733] [2020-10-09 10:49:30,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:30,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:30,431 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 17 states. [2020-10-09 10:49:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:31,565 INFO L93 Difference]: Finished difference Result 250 states and 575 transitions. [2020-10-09 10:49:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:49:31,569 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:31,570 INFO L225 Difference]: With dead ends: 250 [2020-10-09 10:49:31,570 INFO L226 Difference]: Without dead ends: 248 [2020-10-09 10:49:31,570 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:49:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-09 10:49:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 164. [2020-10-09 10:49:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:49:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 407 transitions. [2020-10-09 10:49:31,574 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 407 transitions. Word has length 14 [2020-10-09 10:49:31,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:31,574 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 407 transitions. [2020-10-09 10:49:31,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 407 transitions. [2020-10-09 10:49:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:31,575 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:31,575 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:31,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-10-09 10:49:31,776 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1339162521, now seen corresponding path program 211 times [2020-10-09 10:49:31,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:31,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164986069] [2020-10-09 10:49:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:31,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164986069] [2020-10-09 10:49:31,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457527439] [2020-10-09 10:49:31,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:32,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:32,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:32,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:32,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:32,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817284138] [2020-10-09 10:49:32,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:32,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:32,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:32,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:32,428 INFO L87 Difference]: Start difference. First operand 164 states and 407 transitions. Second operand 17 states. [2020-10-09 10:49:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:33,443 INFO L93 Difference]: Finished difference Result 245 states and 564 transitions. [2020-10-09 10:49:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:49:33,446 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:33,447 INFO L225 Difference]: With dead ends: 245 [2020-10-09 10:49:33,447 INFO L226 Difference]: Without dead ends: 243 [2020-10-09 10:49:33,448 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-09 10:49:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 164. [2020-10-09 10:49:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-09 10:49:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 407 transitions. [2020-10-09 10:49:33,451 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 407 transitions. Word has length 14 [2020-10-09 10:49:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:33,451 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 407 transitions. [2020-10-09 10:49:33,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 407 transitions. [2020-10-09 10:49:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:33,451 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:33,451 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:33,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:33,652 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:33,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1339133691, now seen corresponding path program 212 times [2020-10-09 10:49:33,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:33,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666533818] [2020-10-09 10:49:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:33,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666533818] [2020-10-09 10:49:33,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755061716] [2020-10-09 10:49:33,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:33,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:49:33,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:33,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:34,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:34,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:34,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958157831] [2020-10-09 10:49:34,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:34,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:34,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:34,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:34,461 INFO L87 Difference]: Start difference. First operand 164 states and 407 transitions. Second operand 17 states. [2020-10-09 10:49:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:36,143 INFO L93 Difference]: Finished difference Result 262 states and 602 transitions. [2020-10-09 10:49:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:49:36,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:36,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:36,146 INFO L225 Difference]: With dead ends: 262 [2020-10-09 10:49:36,146 INFO L226 Difference]: Without dead ends: 260 [2020-10-09 10:49:36,146 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:49:36,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-09 10:49:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 165. [2020-10-09 10:49:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:49:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 411 transitions. [2020-10-09 10:49:36,149 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 411 transitions. Word has length 14 [2020-10-09 10:49:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:36,149 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 411 transitions. [2020-10-09 10:49:36,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 411 transitions. [2020-10-09 10:49:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:36,149 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:36,150 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:36,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-10-09 10:49:36,350 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:36,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1318607692, now seen corresponding path program 213 times [2020-10-09 10:49:36,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:36,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543921775] [2020-10-09 10:49:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:36,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543921775] [2020-10-09 10:49:36,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459692186] [2020-10-09 10:49:36,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:36,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:49:36,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:36,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:37,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:37,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597479885] [2020-10-09 10:49:37,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:37,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:37,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:37,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:37,030 INFO L87 Difference]: Start difference. First operand 165 states and 411 transitions. Second operand 17 states. [2020-10-09 10:49:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:38,458 INFO L93 Difference]: Finished difference Result 254 states and 594 transitions. [2020-10-09 10:49:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:49:38,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:38,463 INFO L225 Difference]: With dead ends: 254 [2020-10-09 10:49:38,463 INFO L226 Difference]: Without dead ends: 252 [2020-10-09 10:49:38,464 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:49:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-09 10:49:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 166. [2020-10-09 10:49:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-09 10:49:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 416 transitions. [2020-10-09 10:49:38,467 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 416 transitions. Word has length 14 [2020-10-09 10:49:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:38,467 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 416 transitions. [2020-10-09 10:49:38,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 416 transitions. [2020-10-09 10:49:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:38,467 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:38,468 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:38,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-10-09 10:49:38,669 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1318606731, now seen corresponding path program 214 times [2020-10-09 10:49:38,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:38,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131046084] [2020-10-09 10:49:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:39,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131046084] [2020-10-09 10:49:39,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140764563] [2020-10-09 10:49:39,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:39,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:49:39,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:39,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:39,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:39,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215802890] [2020-10-09 10:49:39,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:39,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:39,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:39,594 INFO L87 Difference]: Start difference. First operand 166 states and 416 transitions. Second operand 17 states. [2020-10-09 10:49:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:41,183 INFO L93 Difference]: Finished difference Result 248 states and 576 transitions. [2020-10-09 10:49:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:49:41,187 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:41,188 INFO L225 Difference]: With dead ends: 248 [2020-10-09 10:49:41,188 INFO L226 Difference]: Without dead ends: 246 [2020-10-09 10:49:41,188 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:49:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-09 10:49:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 167. [2020-10-09 10:49:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:49:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-09 10:49:41,192 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-09 10:49:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:41,192 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-09 10:49:41,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-09 10:49:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:41,192 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:41,192 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:41,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:41,399 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:41,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:41,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1317944602, now seen corresponding path program 215 times [2020-10-09 10:49:41,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:41,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288484587] [2020-10-09 10:49:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:41,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288484587] [2020-10-09 10:49:41,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343106331] [2020-10-09 10:49:41,663 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:41,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 10:49:41,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:41,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:42,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:42,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:42,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941197227] [2020-10-09 10:49:42,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:42,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:42,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:42,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:42,145 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-09 10:49:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:43,659 INFO L93 Difference]: Finished difference Result 245 states and 579 transitions. [2020-10-09 10:49:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:49:43,663 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:43,664 INFO L225 Difference]: With dead ends: 245 [2020-10-09 10:49:43,664 INFO L226 Difference]: Without dead ends: 243 [2020-10-09 10:49:43,664 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:49:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-09 10:49:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 169. [2020-10-09 10:49:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:49:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-09 10:49:43,669 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-09 10:49:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:43,670 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-09 10:49:43,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-09 10:49:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:43,671 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:43,671 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:43,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:43,881 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:43,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1317923243, now seen corresponding path program 216 times [2020-10-09 10:49:43,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:43,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988724442] [2020-10-09 10:49:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988724442] [2020-10-09 10:49:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644798776] [2020-10-09 10:49:44,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:44,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:49:44,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:44,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:44,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:44,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:49:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:44,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:44,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:44,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85984427] [2020-10-09 10:49:44,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:44,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:44,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:44,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:44,587 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-09 10:49:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:45,653 INFO L93 Difference]: Finished difference Result 223 states and 540 transitions. [2020-10-09 10:49:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:49:45,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:45,658 INFO L225 Difference]: With dead ends: 223 [2020-10-09 10:49:45,659 INFO L226 Difference]: Without dead ends: 218 [2020-10-09 10:49:45,659 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-09 10:49:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 169. [2020-10-09 10:49:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:49:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-09 10:49:45,663 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-09 10:49:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-09 10:49:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-09 10:49:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:45,663 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:45,663 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:45,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-10-09 10:49:45,864 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:45,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1317922282, now seen corresponding path program 217 times [2020-10-09 10:49:45,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:45,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11822396] [2020-10-09 10:49:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:46,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11822396] [2020-10-09 10:49:46,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999829127] [2020-10-09 10:49:46,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:46,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:46,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:46,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:49:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:46,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:46,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:46,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639538404] [2020-10-09 10:49:46,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:46,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:46,756 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-09 10:49:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:48,718 INFO L93 Difference]: Finished difference Result 286 states and 679 transitions. [2020-10-09 10:49:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:49:48,720 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:48,721 INFO L225 Difference]: With dead ends: 286 [2020-10-09 10:49:48,722 INFO L226 Difference]: Without dead ends: 281 [2020-10-09 10:49:48,722 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:49:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-09 10:49:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 167. [2020-10-09 10:49:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-09 10:49:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-09 10:49:48,725 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-09 10:49:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:48,725 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-09 10:49:48,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-09 10:49:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:48,726 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:48,726 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:48,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:48,927 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1317914811, now seen corresponding path program 218 times [2020-10-09 10:49:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:48,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284883315] [2020-10-09 10:49:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284883315] [2020-10-09 10:49:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765698876] [2020-10-09 10:49:49,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:49,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:49:49,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:49,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:49,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:49,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:49,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409932448] [2020-10-09 10:49:49,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:49,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:49,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:49,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:49,626 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-09 10:49:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:51,222 INFO L93 Difference]: Finished difference Result 268 states and 630 transitions. [2020-10-09 10:49:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 10:49:51,227 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:51,228 INFO L225 Difference]: With dead ends: 268 [2020-10-09 10:49:51,228 INFO L226 Difference]: Without dead ends: 266 [2020-10-09 10:49:51,228 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2020-10-09 10:49:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-09 10:49:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 169. [2020-10-09 10:49:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:49:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-09 10:49:51,232 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-09 10:49:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:51,232 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-09 10:49:51,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-09 10:49:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:51,233 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:51,233 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:51,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2020-10-09 10:49:51,436 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:51,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:51,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1317893452, now seen corresponding path program 219 times [2020-10-09 10:49:51,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:51,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346591743] [2020-10-09 10:49:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:51,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346591743] [2020-10-09 10:49:51,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770571877] [2020-10-09 10:49:51,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:51,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:49:51,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:51,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:52,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:49:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:52,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:52,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:52,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415996201] [2020-10-09 10:49:52,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:52,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:52,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:52,264 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-09 10:49:54,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:54,779 INFO L93 Difference]: Finished difference Result 296 states and 707 transitions. [2020-10-09 10:49:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:49:54,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:54,783 INFO L225 Difference]: With dead ends: 296 [2020-10-09 10:49:54,783 INFO L226 Difference]: Without dead ends: 291 [2020-10-09 10:49:54,784 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:49:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-09 10:49:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 169. [2020-10-09 10:49:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:49:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-09 10:49:54,787 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-09 10:49:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:54,787 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-09 10:49:54,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-09 10:49:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:54,788 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:54,788 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:54,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:54,989 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1317892491, now seen corresponding path program 220 times [2020-10-09 10:49:54,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:54,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254156558] [2020-10-09 10:49:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:55,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254156558] [2020-10-09 10:49:55,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995326388] [2020-10-09 10:49:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:55,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:49:55,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:55,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:55,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:49:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:55,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:55,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:55,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961636874] [2020-10-09 10:49:55,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:55,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:55,687 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-09 10:49:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:58,114 INFO L93 Difference]: Finished difference Result 299 states and 710 transitions. [2020-10-09 10:49:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:49:58,116 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:49:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:58,116 INFO L225 Difference]: With dead ends: 299 [2020-10-09 10:49:58,116 INFO L226 Difference]: Without dead ends: 294 [2020-10-09 10:49:58,117 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=476, Invalid=1084, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:49:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-09 10:49:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 165. [2020-10-09 10:49:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-09 10:49:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 411 transitions. [2020-10-09 10:49:58,121 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 411 transitions. Word has length 14 [2020-10-09 10:49:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:58,121 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 411 transitions. [2020-10-09 10:49:58,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:49:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 411 transitions. [2020-10-09 10:49:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:49:58,122 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:58,122 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:58,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:58,334 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1317684171, now seen corresponding path program 221 times [2020-10-09 10:49:58,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:58,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936949926] [2020-10-09 10:49:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:58,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936949926] [2020-10-09 10:49:58,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268269621] [2020-10-09 10:49:58,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:58,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:49:58,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:58,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:49:58,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:59,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:59,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:49:59,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58988340] [2020-10-09 10:49:59,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:49:59,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:49:59,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:49:59,190 INFO L87 Difference]: Start difference. First operand 165 states and 411 transitions. Second operand 17 states. [2020-10-09 10:50:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:50:00,777 INFO L93 Difference]: Finished difference Result 274 states and 633 transitions. [2020-10-09 10:50:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:50:00,780 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:50:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:50:00,781 INFO L225 Difference]: With dead ends: 274 [2020-10-09 10:50:00,781 INFO L226 Difference]: Without dead ends: 272 [2020-10-09 10:50:00,782 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:50:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-09 10:50:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 169. [2020-10-09 10:50:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-09 10:50:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-09 10:50:00,785 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-09 10:50:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:50:00,785 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-09 10:50:00,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:50:00,785 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-09 10:50:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:50:00,786 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:50:00,786 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:50:00,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:50:00,992 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:50:00,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:50:00,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1317021081, now seen corresponding path program 222 times [2020-10-09 10:50:00,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:50:00,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324378318] [2020-10-09 10:50:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:50:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:50:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:50:01,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324378318] [2020-10-09 10:50:01,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034073072] [2020-10-09 10:50:01,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:50:01,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:50:01,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:50:01,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:50:01,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2020-10-09 10:50:02,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-10-09 10:50:02,018 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 10:50:02,021 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 10:50:02,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 10:50:02 BasicIcfg [2020-10-09 10:50:02,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 10:50:02,022 INFO L168 Benchmark]: Toolchain (without parser) took 871329.97 ms. Allocated memory was 253.2 MB in the beginning and 233.3 MB in the end (delta: -19.9 MB). Free memory was 208.6 MB in the beginning and 191.4 MB in the end (delta: 17.2 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 10:50:02,023 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 10:50:02,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 208.6 MB in the beginning and 274.7 MB in the end (delta: -66.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 321.4 MB. Free memory was 274.7 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,023 INFO L168 Benchmark]: Boogie Preprocessor took 29.99 ms. Allocated memory is still 321.4 MB. Free memory was 272.2 MB in the beginning and 269.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,024 INFO L168 Benchmark]: RCFGBuilder took 531.00 ms. Allocated memory is still 321.4 MB. Free memory was 269.7 MB in the beginning and 250.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,024 INFO L168 Benchmark]: TraceAbstraction took 870109.55 ms. Allocated memory was 321.4 MB in the beginning and 233.3 MB in the end (delta: -88.1 MB). Free memory was 250.4 MB in the beginning and 191.4 MB in the end (delta: 59.0 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 10:50:02,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 253.2 MB in the beginning and 321.4 MB in the end (delta: 68.2 MB). Free memory was 208.6 MB in the beginning and 274.7 MB in the end (delta: -66.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.37 ms. Allocated memory is still 321.4 MB. Free memory was 274.7 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.99 ms. Allocated memory is still 321.4 MB. Free memory was 272.2 MB in the beginning and 269.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 531.00 ms. Allocated memory is still 321.4 MB. Free memory was 269.7 MB in the beginning and 250.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 870109.55 ms. Allocated memory was 321.4 MB in the beginning and 233.3 MB in the end (delta: -88.1 MB). Free memory was 250.4 MB in the beginning and 191.4 MB in the end (delta: 59.0 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 721 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 21 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 15 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 50 TotalNumberOfCompositions, 1052 MoverChecksTotal - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 712). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 870.0s, OverallIterations: 256, TraceHistogramMax: 6, AutomataDifference: 655.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 3315 SDtfs, 30268 SDslu, 25193 SDs, 0 SdLazy, 17888 SolverSat, 7513 SolverUnsat, 111 SolverUnknown, 0 SolverNotchecked, 239.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7221 GetRequests, 1232 SyntacticMatches, 234 SemanticMatches, 5755 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37215 ImplicationChecksByTransitivity, 534.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 255 MinimizatonAttempts, 14897 StatesRemovedByMinimization, 255 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 144.5s InterpolantComputationTime, 6490 NumberOfCodeBlocks, 6490 NumberOfCodeBlocksAsserted, 796 NumberOfCheckSat, 5988 ConstructedInterpolants, 31 QuantifiedInterpolants, 662993 SizeOfPredicates, 247 NumberOfNonLiveVariables, 21948 ConjunctsInSsa, 2503 ConjunctsInUnsatCore, 502 InterpolantComputations, 8 PerfectInterpolantSequences, 0/2756 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown