/usr/bin/java -Xmx8000000000 -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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:17:09,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:17:09,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:17:09,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:17:09,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:17:09,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:17:09,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:17:09,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:17:09,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:17:09,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:17:09,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:17:09,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:17:09,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:17:09,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:17:09,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:17:09,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:17:09,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:17:09,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:17:09,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:17:09,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:17:09,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:17:09,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:17:09,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:17:09,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:17:09,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:17:09,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:17:09,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:17:09,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:17:09,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:17:09,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:17:09,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:17:09,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:17:09,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:17:09,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:17:09,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:17:09,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:17:09,067 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 [2020-10-05 22:17:09,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:17:09,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:17:09,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:17:09,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:17:09,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:17:09,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:17:09,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:17:09,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:17:09,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:17:09,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:17:09,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:17:09,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:17:09,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:17:09,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:17:09,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:17:09,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:17:09,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:17:09,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:17:09,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:17:09,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:17:09,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:17:09,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:17:09,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:17:09,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:17:09,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:17:09,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:17:09,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:17:09,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:17:09,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:17:09,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:17:09,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:17:09,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:17:09,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:17:09,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:17:09,484 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:17:09,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-05 22:17:09,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a4b8906/a00ba35abf37434a896f5c7f5745bea3/FLAG0a0afacfc [2020-10-05 22:17:10,109 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:17:10,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-05 22:17:10,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a4b8906/a00ba35abf37434a896f5c7f5745bea3/FLAG0a0afacfc [2020-10-05 22:17:10,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a4b8906/a00ba35abf37434a896f5c7f5745bea3 [2020-10-05 22:17:10,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:17:10,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:17:10,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:17:10,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:17:10,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:17:10,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:17:10" (1/1) ... [2020-10-05 22:17:10,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f889c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:10, skipping insertion in model container [2020-10-05 22:17:10,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:17:10" (1/1) ... [2020-10-05 22:17:10,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:17:10,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:17:11,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:17:11,027 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:17:11,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:17:11,178 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:17:11,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11 WrapperNode [2020-10-05 22:17:11,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:17:11,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:17:11,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:17:11,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:17:11,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:17:11,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:17:11,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:17:11,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:17:11,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:17:11,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:17:11,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:17:11,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:17:11,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (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 [2020-10-05 22:17:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-05 22:17:11,332 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-05 22:17:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-05 22:17:11,333 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-05 22:17:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:17:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:17:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:17:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:17:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:17:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:17:11,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:17:11,338 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:17:11,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:17:11,639 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 22:17:11,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:17:11 BoogieIcfgContainer [2020-10-05 22:17:11,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:17:11,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:17:11,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:17:11,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:17:11,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:17:10" (1/3) ... [2020-10-05 22:17:11,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76655ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:17:11, skipping insertion in model container [2020-10-05 22:17:11,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (2/3) ... [2020-10-05 22:17:11,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76655ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:17:11, skipping insertion in model container [2020-10-05 22:17:11,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:17:11" (3/3) ... [2020-10-05 22:17:11,655 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-05 22:17:11,680 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:17:11,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:17:11,689 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:17:11,690 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:17:11,721 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,722 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,722 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,722 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,723 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,723 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,724 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,724 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,724 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,725 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,725 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,725 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,726 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,726 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,726 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,729 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,731 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,735 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,736 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,736 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,741 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,742 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,742 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,742 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,742 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,743 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 22:17:11,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:17:11,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:17:11,792 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:17:11,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:17:11,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:17:11,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:17:11,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:17:11,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:17:11,821 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,823 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,890 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 22:17:11,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:17:11,895 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. [2020-10-05 22:17:11,898 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,915 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 22:17:11,916 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:17:11,917 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. [2020-10-05 22:17:11,919 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1032 [2020-10-05 22:17:11,920 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:17:12,980 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-05 22:17:13,072 INFO L206 etLargeBlockEncoding]: Checked pairs total: 879 [2020-10-05 22:17:13,073 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-10-05 22:17:13,077 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-05 22:17:13,090 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-05 22:17:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-05 22:17:13,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 22:17:13,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-05 22:17:13,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840859352] [2020-10-05 22:17:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840859352] [2020-10-05 22:17:13,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:17:13,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116324176] [2020-10-05 22:17:13,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:17:13,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:17:13,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:17:13,419 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-05 22:17:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,534 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-05 22:17:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:17:13,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-05 22:17:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,552 INFO L225 Difference]: With dead ends: 83 [2020-10-05 22:17:13,552 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 22:17:13,556 INFO L675 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 [2020-10-05 22:17:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 22:17:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-05 22:17:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-05 22:17:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-05 22:17:13,598 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-05 22:17:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,599 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-05 22:17:13,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:17:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-05 22:17:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:17:13,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,602 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-05 22:17:13,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783743369] [2020-10-05 22:17:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783743369] [2020-10-05 22:17:13,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:13,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261319680] [2020-10-05 22:17:13,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:13,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:13,743 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-05 22:17:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,808 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-05 22:17:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:13,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,810 INFO L225 Difference]: With dead ends: 80 [2020-10-05 22:17:13,811 INFO L226 Difference]: Without dead ends: 75 [2020-10-05 22:17:13,811 INFO L675 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 [2020-10-05 22:17:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-05 22:17:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-05 22:17:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 22:17:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-05 22:17:13,822 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-05 22:17:13,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,823 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-05 22:17:13,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-05 22:17:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:17:13,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,826 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-05 22:17:13,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212425755] [2020-10-05 22:17:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212425755] [2020-10-05 22:17:13,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:13,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743204003] [2020-10-05 22:17:13,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:13,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:13,903 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-05 22:17:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,929 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-05 22:17:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:17:13,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,932 INFO L225 Difference]: With dead ends: 73 [2020-10-05 22:17:13,932 INFO L226 Difference]: Without dead ends: 70 [2020-10-05 22:17:13,932 INFO L675 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 [2020-10-05 22:17:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-05 22:17:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-05 22:17:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-05 22:17:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-05 22:17:13,942 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-05 22:17:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,943 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-05 22:17:13,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-05 22:17:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:17:13,945 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,945 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-05 22:17:13,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281436545] [2020-10-05 22:17:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281436545] [2020-10-05 22:17:14,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:14,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:14,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192903209] [2020-10-05 22:17:14,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:14,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:14,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:14,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:14,039 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-05 22:17:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:14,112 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-05 22:17:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:14,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:14,117 INFO L225 Difference]: With dead ends: 86 [2020-10-05 22:17:14,117 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 22:17:14,118 INFO L675 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 [2020-10-05 22:17:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 22:17:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-05 22:17:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-05 22:17:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-05 22:17:14,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-05 22:17:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:14,136 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-05 22:17:14,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-05 22:17:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:14,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:14,141 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:14,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:17:14,142 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:14,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-05 22:17:14,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:14,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644729864] [2020-10-05 22:17:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644729864] [2020-10-05 22:17:14,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147401052] [2020-10-05 22:17:14,262 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 [2020-10-05 22:17:14,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:14,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:14,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:14,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:14,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-05 22:17:14,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67095741] [2020-10-05 22:17:14,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 22:17:14,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:14,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 22:17:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-05 22:17:14,436 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-05 22:17:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:14,523 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-05 22:17:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:14,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-05 22:17:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:14,527 INFO L225 Difference]: With dead ends: 101 [2020-10-05 22:17:14,527 INFO L226 Difference]: Without dead ends: 96 [2020-10-05 22:17:14,528 INFO L675 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 [2020-10-05 22:17:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-05 22:17:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-05 22:17:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-05 22:17:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-05 22:17:14,546 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-05 22:17:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:14,547 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-05 22:17:14,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 22:17:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-05 22:17:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:14,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:14,550 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:14,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:14,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:14,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-05 22:17:14,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:14,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050270020] [2020-10-05 22:17:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050270020] [2020-10-05 22:17:14,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058626464] [2020-10-05 22:17:14,868 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 [2020-10-05 22:17:14,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:14,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:14,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:14,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:15,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:15,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764076333] [2020-10-05 22:17:15,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:15,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:15,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,029 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-05 22:17:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:15,065 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-05 22:17:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:17:15,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:15,066 INFO L225 Difference]: With dead ends: 84 [2020-10-05 22:17:15,066 INFO L226 Difference]: Without dead ends: 81 [2020-10-05 22:17:15,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-05 22:17:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-05 22:17:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-05 22:17:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-05 22:17:15,084 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-05 22:17:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:15,085 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-05 22:17:15,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-05 22:17:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:15,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:15,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:15,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,299 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:15,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-05 22:17:15,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:15,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630545047] [2020-10-05 22:17:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630545047] [2020-10-05 22:17:15,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961771941] [2020-10-05 22:17:15,386 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 [2020-10-05 22:17:15,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:15,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:15,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:15,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:15,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:15,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482135206] [2020-10-05 22:17:15,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:15,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,533 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-05 22:17:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:15,586 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-05 22:17:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:15,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:15,588 INFO L225 Difference]: With dead ends: 90 [2020-10-05 22:17:15,588 INFO L226 Difference]: Without dead ends: 87 [2020-10-05 22:17:15,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-05 22:17:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-05 22:17:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-05 22:17:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-05 22:17:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-05 22:17:15,596 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-05 22:17:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:15,596 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-05 22:17:15,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-05 22:17:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:15,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:15,598 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:15,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,814 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:15,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-05 22:17:15,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:15,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309640588] [2020-10-05 22:17:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309640588] [2020-10-05 22:17:15,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548141047] [2020-10-05 22:17:15,866 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 [2020-10-05 22:17:15,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:15,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:15,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:15,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:15,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275925106] [2020-10-05 22:17:15,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:15,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:15,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:15,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,987 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-05 22:17:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,089 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-05 22:17:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:16,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,091 INFO L225 Difference]: With dead ends: 99 [2020-10-05 22:17:16,091 INFO L226 Difference]: Without dead ends: 93 [2020-10-05 22:17:16,092 INFO L675 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 [2020-10-05 22:17:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-05 22:17:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-05 22:17:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-05 22:17:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-05 22:17:16,098 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-05 22:17:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,099 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-05 22:17:16,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-05 22:17:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:16,315 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-05 22:17:16,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346713688] [2020-10-05 22:17:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346713688] [2020-10-05 22:17:16,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396488515] [2020-10-05 22:17:16,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,374 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-05 22:17:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,405 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-05 22:17:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:17:16,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,407 INFO L225 Difference]: With dead ends: 92 [2020-10-05 22:17:16,407 INFO L226 Difference]: Without dead ends: 90 [2020-10-05 22:17:16,408 INFO L675 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 [2020-10-05 22:17:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-05 22:17:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-05 22:17:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-05 22:17:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-05 22:17:16,414 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-05 22:17:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,414 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-05 22:17:16,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-05 22:17:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:17:16,417 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-05 22:17:16,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795405462] [2020-10-05 22:17:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795405462] [2020-10-05 22:17:16,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13568201] [2020-10-05 22:17:16,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,508 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-05 22:17:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,569 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-05 22:17:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:16,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,571 INFO L225 Difference]: With dead ends: 100 [2020-10-05 22:17:16,571 INFO L226 Difference]: Without dead ends: 98 [2020-10-05 22:17:16,572 INFO L675 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 [2020-10-05 22:17:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-05 22:17:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-05 22:17:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-05 22:17:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-05 22:17:16,578 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-05 22:17:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,578 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-05 22:17:16,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-05 22:17:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:17:16,580 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-05 22:17:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890474676] [2020-10-05 22:17:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890474676] [2020-10-05 22:17:16,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143653362] [2020-10-05 22:17:16,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,630 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-05 22:17:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,718 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 22:17:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:16,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,720 INFO L225 Difference]: With dead ends: 105 [2020-10-05 22:17:16,721 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 22:17:16,721 INFO L675 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 [2020-10-05 22:17:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 22:17:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 22:17:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 22:17:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-05 22:17:16,727 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-05 22:17:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,727 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-05 22:17:16,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-05 22:17:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 22:17:16,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-05 22:17:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972103647] [2020-10-05 22:17:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972103647] [2020-10-05 22:17:16,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204094326] [2020-10-05 22:17:16,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,788 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-05 22:17:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,859 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 22:17:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:16,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,861 INFO L225 Difference]: With dead ends: 105 [2020-10-05 22:17:16,861 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 22:17:16,861 INFO L675 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 [2020-10-05 22:17:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 22:17:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 22:17:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 22:17:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-05 22:17:16,866 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-05 22:17:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,866 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-05 22:17:16,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-05 22:17:16,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,868 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 22:17:16,868 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-05 22:17:16,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012664266] [2020-10-05 22:17:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012664266] [2020-10-05 22:17:16,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638450203] [2020-10-05 22:17:16,934 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 [2020-10-05 22:17:16,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:16,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:16,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:16,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:17,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:17,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-05 22:17:17,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068691018] [2020-10-05 22:17:17,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 22:17:17,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 22:17:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-05 22:17:17,073 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-05 22:17:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:17,162 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-05 22:17:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:17,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-05 22:17:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:17,164 INFO L225 Difference]: With dead ends: 122 [2020-10-05 22:17:17,164 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 22:17:17,165 INFO L675 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 [2020-10-05 22:17:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 22:17:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-05 22:17:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-05 22:17:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-05 22:17:17,170 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-05 22:17:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:17,171 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-05 22:17:17,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 22:17:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-05 22:17:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:17,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:17,172 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:17,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-05 22:17:17,385 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:17,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-05 22:17:17,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:17,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906086900] [2020-10-05 22:17:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906086900] [2020-10-05 22:17:17,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816093865] [2020-10-05 22:17:17,465 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 [2020-10-05 22:17:17,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:17,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:17,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:17,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767713930] [2020-10-05 22:17:17,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:17,603 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-05 22:17:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:17,637 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-05 22:17:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:17,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:17,638 INFO L225 Difference]: With dead ends: 108 [2020-10-05 22:17:17,639 INFO L226 Difference]: Without dead ends: 105 [2020-10-05 22:17:17,639 INFO L675 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 [2020-10-05 22:17:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-05 22:17:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-05 22:17:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-05 22:17:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-05 22:17:17,650 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-05 22:17:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:17,650 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-05 22:17:17,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-05 22:17:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:17,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:17,651 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:17,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:17,865 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-05 22:17:17,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:17,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625589502] [2020-10-05 22:17:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625589502] [2020-10-05 22:17:17,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138627134] [2020-10-05 22:17:17,940 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 [2020-10-05 22:17:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:18,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:18,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:18,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:18,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625539566] [2020-10-05 22:17:18,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:18,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:18,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:18,128 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-05 22:17:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:18,193 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-05 22:17:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:18,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:18,194 INFO L225 Difference]: With dead ends: 116 [2020-10-05 22:17:18,194 INFO L226 Difference]: Without dead ends: 113 [2020-10-05 22:17:18,195 INFO L675 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 [2020-10-05 22:17:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-05 22:17:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-05 22:17:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 22:17:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-05 22:17:18,202 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-05 22:17:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:18,203 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-05 22:17:18,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-05 22:17:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:18,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:18,204 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:18,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 22:17:18,414 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:18,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-05 22:17:18,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:18,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374779730] [2020-10-05 22:17:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374779730] [2020-10-05 22:17:18,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908900505] [2020-10-05 22:17:18,498 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 [2020-10-05 22:17:18,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:18,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:18,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:18,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:18,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:18,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428207290] [2020-10-05 22:17:18,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:18,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:18,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:18,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:18,612 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-05 22:17:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:18,695 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-05 22:17:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:18,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:18,699 INFO L225 Difference]: With dead ends: 115 [2020-10-05 22:17:18,700 INFO L226 Difference]: Without dead ends: 112 [2020-10-05 22:17:18,700 INFO L675 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 [2020-10-05 22:17:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-05 22:17:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-05 22:17:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 22:17:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-05 22:17:18,704 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-05 22:17:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:18,705 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-05 22:17:18,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-05 22:17:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:18,705 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:18,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 22:17:18,918 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-05 22:17:18,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:18,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271538172] [2020-10-05 22:17:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271538172] [2020-10-05 22:17:18,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208997540] [2020-10-05 22:17:18,973 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 [2020-10-05 22:17:19,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:19,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:19,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:19,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:19,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:19,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:19,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523744868] [2020-10-05 22:17:19,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:19,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:19,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:19,115 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-05 22:17:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:19,233 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-05 22:17:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:19,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:19,234 INFO L225 Difference]: With dead ends: 124 [2020-10-05 22:17:19,235 INFO L226 Difference]: Without dead ends: 118 [2020-10-05 22:17:19,235 INFO L675 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 [2020-10-05 22:17:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-05 22:17:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-05 22:17:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 22:17:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-05 22:17:19,240 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-05 22:17:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:19,240 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-05 22:17:19,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-05 22:17:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:19,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:19,241 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:19,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 22:17:19,454 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-05 22:17:19,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:19,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103690571] [2020-10-05 22:17:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103690571] [2020-10-05 22:17:19,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706077087] [2020-10-05 22:17:19,519 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 [2020-10-05 22:17:19,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:19,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:19,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:19,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087573061] [2020-10-05 22:17:19,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:19,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:19,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:19,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:19,675 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-05 22:17:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:19,735 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-05 22:17:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:19,736 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:19,737 INFO L225 Difference]: With dead ends: 113 [2020-10-05 22:17:19,737 INFO L226 Difference]: Without dead ends: 111 [2020-10-05 22:17:19,737 INFO L675 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 [2020-10-05 22:17:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-05 22:17:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-05 22:17:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-05 22:17:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-05 22:17:19,741 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-05 22:17:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:19,742 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-05 22:17:19,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-05 22:17:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:19,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:19,743 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:19,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 22:17:19,953 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:19,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-05 22:17:19,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:19,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129557779] [2020-10-05 22:17:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129557779] [2020-10-05 22:17:20,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066339983] [2020-10-05 22:17:20,021 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 [2020-10-05 22:17:20,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:20,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:20,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:20,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:20,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:20,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825054078] [2020-10-05 22:17:20,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:20,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:20,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:20,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:20,161 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-05 22:17:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:20,229 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-05 22:17:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:20,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:20,233 INFO L225 Difference]: With dead ends: 118 [2020-10-05 22:17:20,233 INFO L226 Difference]: Without dead ends: 116 [2020-10-05 22:17:20,236 INFO L675 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 [2020-10-05 22:17:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-05 22:17:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-05 22:17:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-05 22:17:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-05 22:17:20,240 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-05 22:17:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:20,240 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-05 22:17:20,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-05 22:17:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:20,241 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:20,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,453 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-05 22:17:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:20,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956165771] [2020-10-05 22:17:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956165771] [2020-10-05 22:17:20,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096596258] [2020-10-05 22:17:20,523 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 [2020-10-05 22:17:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:20,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:20,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374200488] [2020-10-05 22:17:20,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:20,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:20,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:20,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:20,675 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-05 22:17:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:20,758 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-05 22:17:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:20,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:20,760 INFO L225 Difference]: With dead ends: 119 [2020-10-05 22:17:20,760 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 22:17:20,761 INFO L675 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 [2020-10-05 22:17:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 22:17:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-05 22:17:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 22:17:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-05 22:17:20,766 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-05 22:17:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:20,766 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-05 22:17:20,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-05 22:17:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:20,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:20,767 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:20,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,974 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-05 22:17:20,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:20,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699953211] [2020-10-05 22:17:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699953211] [2020-10-05 22:17:21,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595840849] [2020-10-05 22:17:21,055 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 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 [2020-10-05 22:17:21,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:21,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:21,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:21,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:21,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668703725] [2020-10-05 22:17:21,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:21,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:21,202 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-05 22:17:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:21,266 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-05 22:17:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:21,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:21,268 INFO L225 Difference]: With dead ends: 122 [2020-10-05 22:17:21,268 INFO L226 Difference]: Without dead ends: 120 [2020-10-05 22:17:21,269 INFO L675 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 [2020-10-05 22:17:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-05 22:17:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-05 22:17:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-05 22:17:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-05 22:17:21,273 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-05 22:17:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:21,273 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-05 22:17:21,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-05 22:17:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:21,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:21,274 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:21,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 22:17:21,484 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:21,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-05 22:17:21,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:21,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368956078] [2020-10-05 22:17:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368956078] [2020-10-05 22:17:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610999288] [2020-10-05 22:17:21,549 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 [2020-10-05 22:17:21,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:21,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:21,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:21,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:21,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:21,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022538682] [2020-10-05 22:17:21,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:21,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:21,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:21,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:21,669 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:21,798 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-05 22:17:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:21,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:21,799 INFO L225 Difference]: With dead ends: 123 [2020-10-05 22:17:21,800 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 22:17:21,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 22:17:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-05 22:17:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-05 22:17:21,804 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-05 22:17:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:21,804 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-05 22:17:21,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-05 22:17:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:21,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:21,805 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:22,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:22,017 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-05 22:17:22,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:22,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633729367] [2020-10-05 22:17:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633729367] [2020-10-05 22:17:22,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639476881] [2020-10-05 22:17:22,081 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 [2020-10-05 22:17:22,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:22,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:22,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:22,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326068126] [2020-10-05 22:17:22,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:22,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:22,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:22,215 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-05 22:17:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:22,297 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-05 22:17:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:22,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:22,299 INFO L225 Difference]: With dead ends: 123 [2020-10-05 22:17:22,299 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 22:17:22,299 INFO L675 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 [2020-10-05 22:17:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 22:17:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-05 22:17:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-05 22:17:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-05 22:17:22,303 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-05 22:17:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:22,304 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-05 22:17:22,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-05 22:17:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:22,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:22,306 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:22,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-05 22:17:22,516 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-05 22:17:22,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:22,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490902651] [2020-10-05 22:17:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490902651] [2020-10-05 22:17:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165544907] [2020-10-05 22:17:22,608 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 [2020-10-05 22:17:22,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:22,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:22,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:22,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:22,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:22,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145623564] [2020-10-05 22:17:22,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:22,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:22,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:22,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:22,775 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-05 22:17:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:22,952 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-05 22:17:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:22,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:22,954 INFO L225 Difference]: With dead ends: 133 [2020-10-05 22:17:22,954 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:17:22,954 INFO L675 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 [2020-10-05 22:17:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:17:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-05 22:17:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-05 22:17:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-05 22:17:22,958 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-05 22:17:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:22,959 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-05 22:17:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-05 22:17:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:22,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:22,960 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:23,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:23,171 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-05 22:17:23,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:23,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865426435] [2020-10-05 22:17:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865426435] [2020-10-05 22:17:23,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472785363] [2020-10-05 22:17:23,223 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 [2020-10-05 22:17:23,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:23,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:23,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:23,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:23,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401600289] [2020-10-05 22:17:23,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:23,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:23,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:23,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:23,349 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:23,454 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-05 22:17:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:23,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:23,456 INFO L225 Difference]: With dead ends: 127 [2020-10-05 22:17:23,456 INFO L226 Difference]: Without dead ends: 125 [2020-10-05 22:17:23,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-05 22:17:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-05 22:17:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 22:17:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 22:17:23,460 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 22:17:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:23,460 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 22:17:23,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 22:17:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:23,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:23,461 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:23,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-05 22:17:23,671 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:23,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-05 22:17:23,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:23,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290684589] [2020-10-05 22:17:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290684589] [2020-10-05 22:17:23,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252641637] [2020-10-05 22:17:23,720 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 [2020-10-05 22:17:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:23,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:23,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:23,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:23,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644555593] [2020-10-05 22:17:23,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:23,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:23,859 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 22:17:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:24,058 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-05 22:17:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:24,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:24,060 INFO L225 Difference]: With dead ends: 141 [2020-10-05 22:17:24,060 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:17:24,061 INFO L675 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 [2020-10-05 22:17:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:17:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-05 22:17:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 22:17:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 22:17:24,065 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 22:17:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:24,065 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 22:17:24,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 22:17:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:24,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:24,066 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:24,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-05 22:17:24,269 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-05 22:17:24,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:24,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054331828] [2020-10-05 22:17:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054331828] [2020-10-05 22:17:24,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482379371] [2020-10-05 22:17:24,323 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 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 [2020-10-05 22:17:24,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:24,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:24,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:24,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:24,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594371287] [2020-10-05 22:17:24,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:24,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:24,435 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 22:17:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:24,598 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-05 22:17:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:24,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:24,601 INFO L225 Difference]: With dead ends: 136 [2020-10-05 22:17:24,601 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 22:17:24,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 22:17:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-05 22:17:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-05 22:17:24,607 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-05 22:17:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:24,607 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-05 22:17:24,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-05 22:17:24,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:24,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:24,608 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:24,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-05 22:17:24,821 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-05 22:17:24,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:24,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67800278] [2020-10-05 22:17:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67800278] [2020-10-05 22:17:24,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011590387] [2020-10-05 22:17:24,901 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 [2020-10-05 22:17:24,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:24,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:24,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:24,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:25,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:25,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236116238] [2020-10-05 22:17:25,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:25,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:25,038 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-05 22:17:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:25,146 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-05 22:17:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:25,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:25,148 INFO L225 Difference]: With dead ends: 130 [2020-10-05 22:17:25,148 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:17:25,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:17:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-05 22:17:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 22:17:25,153 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 22:17:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:25,153 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 22:17:25,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 22:17:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:25,154 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:25,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-05 22:17:25,364 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-05 22:17:25,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:25,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200842059] [2020-10-05 22:17:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200842059] [2020-10-05 22:17:25,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343625003] [2020-10-05 22:17:25,431 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 [2020-10-05 22:17:25,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:25,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:25,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:25,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:25,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:25,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595794951] [2020-10-05 22:17:25,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:25,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:25,557 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 22:17:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:25,692 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-05 22:17:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:25,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:25,694 INFO L225 Difference]: With dead ends: 131 [2020-10-05 22:17:25,694 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 22:17:25,694 INFO L675 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 [2020-10-05 22:17:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 22:17:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-05 22:17:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 22:17:25,700 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 22:17:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:25,700 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 22:17:25,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:25,701 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 22:17:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:25,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:25,704 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:25,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-05 22:17:25,916 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-05 22:17:25,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:25,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957212016] [2020-10-05 22:17:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957212016] [2020-10-05 22:17:25,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024318851] [2020-10-05 22:17:25,977 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 [2020-10-05 22:17:26,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:26,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:26,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:26,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:26,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:26,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:26,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118252061] [2020-10-05 22:17:26,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:26,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:26,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:26,099 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:26,238 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-05 22:17:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:26,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:26,239 INFO L225 Difference]: With dead ends: 131 [2020-10-05 22:17:26,239 INFO L226 Difference]: Without dead ends: 126 [2020-10-05 22:17:26,240 INFO L675 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 [2020-10-05 22:17:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-05 22:17:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-05 22:17:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 22:17:26,245 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 22:17:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:26,245 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 22:17:26,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 22:17:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:26,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:26,246 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:26,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:26,458 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:26,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-05 22:17:26,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:26,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408836571] [2020-10-05 22:17:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408836571] [2020-10-05 22:17:26,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016024416] [2020-10-05 22:17:26,507 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 [2020-10-05 22:17:26,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:26,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:26,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:26,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:26,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:26,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915388717] [2020-10-05 22:17:26,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:26,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:26,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:26,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:26,607 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:26,822 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-05 22:17:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:26,822 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:26,824 INFO L225 Difference]: With dead ends: 145 [2020-10-05 22:17:26,824 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 22:17:26,825 INFO L675 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 [2020-10-05 22:17:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 22:17:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-05 22:17:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 22:17:26,829 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 22:17:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:26,829 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 22:17:26,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 22:17:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:26,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:26,830 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:27,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-05 22:17:27,040 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:27,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-05 22:17:27,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:27,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788356748] [2020-10-05 22:17:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788356748] [2020-10-05 22:17:27,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369931200] [2020-10-05 22:17:27,085 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 [2020-10-05 22:17:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:27,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:27,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:27,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:27,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310632705] [2020-10-05 22:17:27,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:27,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:27,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:27,223 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 22:17:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:27,396 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-05 22:17:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:27,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:27,398 INFO L225 Difference]: With dead ends: 135 [2020-10-05 22:17:27,398 INFO L226 Difference]: Without dead ends: 130 [2020-10-05 22:17:27,399 INFO L675 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 [2020-10-05 22:17:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-05 22:17:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-05 22:17:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 22:17:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-05 22:17:27,404 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-05 22:17:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:27,405 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-05 22:17:27,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-05 22:17:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:27,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:27,406 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:27,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:27,617 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-05 22:17:27,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:27,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215697088] [2020-10-05 22:17:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215697088] [2020-10-05 22:17:27,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827395896] [2020-10-05 22:17:27,680 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 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 [2020-10-05 22:17:27,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:27,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:27,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:27,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:27,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:27,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-05 22:17:27,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110354494] [2020-10-05 22:17:27,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 22:17:27,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 22:17:27,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:27,835 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-05 22:17:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:27,965 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-05 22:17:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:27,965 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-05 22:17:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:27,966 INFO L225 Difference]: With dead ends: 143 [2020-10-05 22:17:27,967 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:17:27,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:17:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:17:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-05 22:17:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-05 22:17:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-05 22:17:27,971 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-05 22:17:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:27,972 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-05 22:17:27,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 22:17:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-05 22:17:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:27,973 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:28,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-05 22:17:28,185 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:28,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-05 22:17:28,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:28,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334541563] [2020-10-05 22:17:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334541563] [2020-10-05 22:17:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989941234] [2020-10-05 22:17:28,271 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 [2020-10-05 22:17:28,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:28,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:28,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:28,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:28,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558466352] [2020-10-05 22:17:28,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:28,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:28,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:28,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:28,417 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-05 22:17:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:28,459 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-05 22:17:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:28,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:28,461 INFO L225 Difference]: With dead ends: 132 [2020-10-05 22:17:28,461 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 22:17:28,461 INFO L675 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 [2020-10-05 22:17:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 22:17:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-05 22:17:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 22:17:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 22:17:28,464 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 22:17:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:28,464 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 22:17:28,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 22:17:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:28,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:28,465 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:28,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-05 22:17:28,675 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:28,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-05 22:17:28,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:28,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167909239] [2020-10-05 22:17:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167909239] [2020-10-05 22:17:28,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132164999] [2020-10-05 22:17:28,756 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 [2020-10-05 22:17:28,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:28,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:28,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:28,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714420725] [2020-10-05 22:17:28,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:28,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:28,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:28,911 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 22:17:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:28,985 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-05 22:17:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:28,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:28,988 INFO L225 Difference]: With dead ends: 143 [2020-10-05 22:17:28,988 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 22:17:28,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 22:17:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-05 22:17:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 22:17:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 22:17:28,994 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 22:17:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:28,994 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 22:17:28,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 22:17:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:28,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:28,996 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:29,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-05 22:17:29,208 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:29,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-05 22:17:29,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:29,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867306075] [2020-10-05 22:17:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867306075] [2020-10-05 22:17:29,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865577060] [2020-10-05 22:17:29,304 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 [2020-10-05 22:17:29,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:29,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:29,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:29,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:29,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:29,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539463711] [2020-10-05 22:17:29,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:29,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:29,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:29,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:29,441 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 22:17:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:29,514 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-05 22:17:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:29,515 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:29,516 INFO L225 Difference]: With dead ends: 142 [2020-10-05 22:17:29,516 INFO L226 Difference]: Without dead ends: 139 [2020-10-05 22:17:29,516 INFO L675 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 [2020-10-05 22:17:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-05 22:17:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-05 22:17:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-05 22:17:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-05 22:17:29,520 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-05 22:17:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:29,520 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-05 22:17:29,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-05 22:17:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:29,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:29,521 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:29,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-05 22:17:29,731 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-05 22:17:29,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:29,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734090942] [2020-10-05 22:17:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734090942] [2020-10-05 22:17:29,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006632108] [2020-10-05 22:17:29,796 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 [2020-10-05 22:17:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:29,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:29,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:29,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138160469] [2020-10-05 22:17:29,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:29,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:29,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:29,985 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-05 22:17:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:30,114 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-05 22:17:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:30,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:30,117 INFO L225 Difference]: With dead ends: 141 [2020-10-05 22:17:30,117 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:17:30,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:17:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-05 22:17:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 22:17:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-05 22:17:30,123 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-05 22:17:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:30,123 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-05 22:17:30,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-05 22:17:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:30,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:30,125 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:30,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-05 22:17:30,338 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:30,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-05 22:17:30,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:30,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055655029] [2020-10-05 22:17:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055655029] [2020-10-05 22:17:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783619633] [2020-10-05 22:17:30,458 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 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 [2020-10-05 22:17:30,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:30,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:30,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:30,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:30,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:30,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:30,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671690823] [2020-10-05 22:17:30,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:30,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:30,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:30,639 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-05 22:17:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:30,819 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 22:17:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:30,819 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:30,820 INFO L225 Difference]: With dead ends: 150 [2020-10-05 22:17:30,820 INFO L226 Difference]: Without dead ends: 144 [2020-10-05 22:17:30,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:17:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-05 22:17:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-05 22:17:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-05 22:17:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-05 22:17:30,824 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-05 22:17:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:30,825 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-05 22:17:30,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-05 22:17:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:30,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:30,826 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:31,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:31,035 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-05 22:17:31,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:31,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365209282] [2020-10-05 22:17:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365209282] [2020-10-05 22:17:31,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301051026] [2020-10-05 22:17:31,106 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 [2020-10-05 22:17:31,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:31,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:31,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:31,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:31,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:31,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547115423] [2020-10-05 22:17:31,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:31,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:31,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:31,236 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-05 22:17:31,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:31,279 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-05 22:17:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:31,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:31,280 INFO L225 Difference]: With dead ends: 138 [2020-10-05 22:17:31,280 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:17:31,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:17:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-05 22:17:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-05 22:17:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-05 22:17:31,284 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-05 22:17:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:31,284 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-05 22:17:31,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-05 22:17:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:31,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:31,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-05 22:17:31,488 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-05 22:17:31,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:31,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248946236] [2020-10-05 22:17:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248946236] [2020-10-05 22:17:31,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033142203] [2020-10-05 22:17:31,557 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 [2020-10-05 22:17:31,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:31,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:31,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:31,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:31,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:31,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932793985] [2020-10-05 22:17:31,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:31,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:31,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:31,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:31,740 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-05 22:17:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:31,850 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-05 22:17:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:31,852 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:31,853 INFO L225 Difference]: With dead ends: 145 [2020-10-05 22:17:31,853 INFO L226 Difference]: Without dead ends: 143 [2020-10-05 22:17:31,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-05 22:17:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-05 22:17:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-05 22:17:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-05 22:17:31,858 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-05 22:17:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-05 22:17:31,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-05 22:17:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:31,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:31,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-05 22:17:32,071 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-05 22:17:32,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:32,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064225603] [2020-10-05 22:17:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064225603] [2020-10-05 22:17:32,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596273864] [2020-10-05 22:17:32,134 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 [2020-10-05 22:17:32,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:32,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:32,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:32,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:32,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:32,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318222582] [2020-10-05 22:17:32,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:32,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:32,285 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-05 22:17:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:32,404 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 22:17:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:32,405 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:32,406 INFO L225 Difference]: With dead ends: 150 [2020-10-05 22:17:32,406 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 22:17:32,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 22:17:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-05 22:17:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 22:17:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-05 22:17:32,411 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-05 22:17:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:32,411 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-05 22:17:32,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-05 22:17:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:32,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:32,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:32,623 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:32,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-05 22:17:32,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:32,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109152993] [2020-10-05 22:17:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109152993] [2020-10-05 22:17:32,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737184666] [2020-10-05 22:17:32,720 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 [2020-10-05 22:17:32,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:32,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:32,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:32,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:32,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:32,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477350561] [2020-10-05 22:17:32,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:32,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:32,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:32,886 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:33,019 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-05 22:17:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:33,020 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:33,021 INFO L225 Difference]: With dead ends: 148 [2020-10-05 22:17:33,021 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 22:17:33,021 INFO L675 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 [2020-10-05 22:17:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 22:17:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-05 22:17:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 22:17:33,025 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 22:17:33,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:33,026 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 22:17:33,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 22:17:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:33,026 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:33,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-05 22:17:33,227 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-05 22:17:33,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:33,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889516822] [2020-10-05 22:17:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889516822] [2020-10-05 22:17:33,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346300834] [2020-10-05 22:17:33,302 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 [2020-10-05 22:17:33,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:33,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:33,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:33,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:33,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:33,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749165427] [2020-10-05 22:17:33,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:33,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:33,420 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 22:17:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:33,542 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-05 22:17:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:33,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:33,544 INFO L225 Difference]: With dead ends: 149 [2020-10-05 22:17:33,544 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 22:17:33,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 22:17:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-05 22:17:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-05 22:17:33,549 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-05 22:17:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:33,549 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-05 22:17:33,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-05 22:17:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:33,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:33,550 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:33,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:33,763 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-05 22:17:33,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:33,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250869381] [2020-10-05 22:17:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250869381] [2020-10-05 22:17:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805407088] [2020-10-05 22:17:33,853 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 [2020-10-05 22:17:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:33,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:33,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:34,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:34,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039372743] [2020-10-05 22:17:34,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:34,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:34,005 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-05 22:17:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:34,073 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-05 22:17:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:34,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:34,074 INFO L225 Difference]: With dead ends: 152 [2020-10-05 22:17:34,074 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 22:17:34,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 22:17:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-05 22:17:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-05 22:17:34,079 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-05 22:17:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:34,079 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-05 22:17:34,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-05 22:17:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:34,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:34,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:34,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-05 22:17:34,281 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:34,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-05 22:17:34,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:34,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667686554] [2020-10-05 22:17:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667686554] [2020-10-05 22:17:34,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450092441] [2020-10-05 22:17:34,357 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 [2020-10-05 22:17:34,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:34,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:34,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:34,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:34,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:34,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089218548] [2020-10-05 22:17:34,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:34,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:34,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:34,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:34,506 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-05 22:17:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:34,642 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-05 22:17:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:34,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:34,643 INFO L225 Difference]: With dead ends: 153 [2020-10-05 22:17:34,643 INFO L226 Difference]: Without dead ends: 151 [2020-10-05 22:17:34,644 INFO L675 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 [2020-10-05 22:17:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-05 22:17:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-05 22:17:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 22:17:34,647 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 22:17:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:34,647 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 22:17:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 22:17:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:34,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:34,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-05 22:17:34,849 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-05 22:17:34,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:34,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895661076] [2020-10-05 22:17:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895661076] [2020-10-05 22:17:34,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925254833] [2020-10-05 22:17:34,918 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 [2020-10-05 22:17:34,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:34,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:34,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:34,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:35,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:35,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290269378] [2020-10-05 22:17:35,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:35,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:35,062 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 22:17:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:35,186 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:35,187 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:35,188 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:35,188 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:17:35,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:17:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:17:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-05 22:17:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 22:17:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-05 22:17:35,194 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-05 22:17:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:35,194 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-05 22:17:35,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-05 22:17:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:35,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:35,195 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:35,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-05 22:17:35,405 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-05 22:17:35,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:35,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108890448] [2020-10-05 22:17:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108890448] [2020-10-05 22:17:35,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64300860] [2020-10-05 22:17:35,478 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 [2020-10-05 22:17:35,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:35,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:35,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:35,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:35,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432799998] [2020-10-05 22:17:35,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:35,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:35,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:35,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:35,626 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-05 22:17:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:35,710 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-05 22:17:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:35,711 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:35,712 INFO L225 Difference]: With dead ends: 148 [2020-10-05 22:17:35,712 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 22:17:35,713 INFO L675 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 [2020-10-05 22:17:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 22:17:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-05 22:17:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 22:17:35,717 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 22:17:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:35,717 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 22:17:35,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 22:17:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:35,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:35,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:35,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-05 22:17:35,925 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:35,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-05 22:17:35,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664086254] [2020-10-05 22:17:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664086254] [2020-10-05 22:17:35,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886896650] [2020-10-05 22:17:35,995 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 [2020-10-05 22:17:36,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:36,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:36,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:36,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:36,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016918692] [2020-10-05 22:17:36,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:36,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:36,147 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:36,290 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-05 22:17:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:36,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:36,292 INFO L225 Difference]: With dead ends: 157 [2020-10-05 22:17:36,292 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 22:17:36,293 INFO L675 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 [2020-10-05 22:17:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 22:17:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-05 22:17:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-05 22:17:36,296 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-05 22:17:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:36,297 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-05 22:17:36,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-05 22:17:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:36,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:36,298 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:36,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:36,508 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:36,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-05 22:17:36,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:36,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710070704] [2020-10-05 22:17:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710070704] [2020-10-05 22:17:36,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140481940] [2020-10-05 22:17:36,572 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 [2020-10-05 22:17:36,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:36,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:36,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:17:36,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:36,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 22:17:36,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775665904] [2020-10-05 22:17:36,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:36,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:36,646 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-05 22:17:36,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:36,728 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-05 22:17:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:36,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-05 22:17:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:36,730 INFO L225 Difference]: With dead ends: 149 [2020-10-05 22:17:36,730 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 22:17:36,730 INFO L675 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 [2020-10-05 22:17:36,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 22:17:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-05 22:17:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:36,734 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:36,734 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:36,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:36,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:36,735 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:36,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-05 22:17:36,936 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-05 22:17:36,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:36,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423314396] [2020-10-05 22:17:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423314396] [2020-10-05 22:17:36,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664040971] [2020-10-05 22:17:36,995 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 [2020-10-05 22:17:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:37,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:37,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:37,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:37,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:37,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:37,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517016270] [2020-10-05 22:17:37,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:37,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:37,158 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:37,401 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-05 22:17:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:37,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:37,403 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:37,403 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:37,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:17:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 22:17:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-05 22:17:37,407 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-05 22:17:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:37,407 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-05 22:17:37,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-05 22:17:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:37,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:37,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:37,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-05 22:17:37,618 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-05 22:17:37,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:37,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220854932] [2020-10-05 22:17:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:37,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220854932] [2020-10-05 22:17:37,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442818846] [2020-10-05 22:17:37,674 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 [2020-10-05 22:17:37,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:37,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:37,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:37,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:37,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:37,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:37,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022434838] [2020-10-05 22:17:37,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:37,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:37,844 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:38,023 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:38,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:38,025 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:38,025 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:17:38,025 INFO L675 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 [2020-10-05 22:17:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:17:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-05 22:17:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:38,030 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:38,030 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:38,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:38,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:38,031 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:38,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:38,243 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:38,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-05 22:17:38,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:38,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695185141] [2020-10-05 22:17:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695185141] [2020-10-05 22:17:38,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619911458] [2020-10-05 22:17:38,302 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 [2020-10-05 22:17:38,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:38,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:38,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:38,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:38,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:38,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679861693] [2020-10-05 22:17:38,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:38,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:38,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:38,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:38,464 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:38,799 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-05 22:17:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:38,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:38,802 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:38,802 INFO L226 Difference]: Without dead ends: 171 [2020-10-05 22:17:38,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:17:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-05 22:17:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-05 22:17:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:38,806 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:38,806 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:38,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:38,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:38,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:39,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-05 22:17:39,018 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:39,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-05 22:17:39,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:39,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553806727] [2020-10-05 22:17:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553806727] [2020-10-05 22:17:39,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747171430] [2020-10-05 22:17:39,077 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 [2020-10-05 22:17:39,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:39,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:39,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:39,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:39,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:39,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:39,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258505895] [2020-10-05 22:17:39,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:39,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:39,246 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:39,498 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-05 22:17:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:39,498 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:39,499 INFO L225 Difference]: With dead ends: 166 [2020-10-05 22:17:39,499 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:39,499 INFO L675 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 [2020-10-05 22:17:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:39,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-05 22:17:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-05 22:17:39,503 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-05 22:17:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:39,503 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-05 22:17:39,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-05 22:17:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:39,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:39,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:39,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:39,713 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-05 22:17:39,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:39,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266870265] [2020-10-05 22:17:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266870265] [2020-10-05 22:17:39,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824544716] [2020-10-05 22:17:39,776 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 [2020-10-05 22:17:39,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:39,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:39,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:39,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:39,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160300606] [2020-10-05 22:17:39,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:39,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:39,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:39,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:39,917 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-05 22:17:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:40,094 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-05 22:17:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:40,094 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:40,095 INFO L225 Difference]: With dead ends: 163 [2020-10-05 22:17:40,096 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:40,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:17:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-05 22:17:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 22:17:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-05 22:17:40,102 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-05 22:17:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:40,102 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-05 22:17:40,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-05 22:17:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:40,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:40,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:40,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-05 22:17:40,304 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-05 22:17:40,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:40,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141959420] [2020-10-05 22:17:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:40,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141959420] [2020-10-05 22:17:40,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775022505] [2020-10-05 22:17:40,362 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 [2020-10-05 22:17:40,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:40,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:40,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:40,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:40,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:40,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076955446] [2020-10-05 22:17:40,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:40,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:40,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:40,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:40,507 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:40,759 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-05 22:17:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:40,760 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:40,761 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:17:40,762 INFO L226 Difference]: Without dead ends: 168 [2020-10-05 22:17:40,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 22:17:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-05 22:17:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-05 22:17:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 22:17:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-05 22:17:40,765 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-05 22:17:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:40,766 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-05 22:17:40,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-05 22:17:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:40,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:40,766 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:40,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:40,978 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-05 22:17:40,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:40,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965300479] [2020-10-05 22:17:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965300479] [2020-10-05 22:17:41,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606576563] [2020-10-05 22:17:41,030 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 [2020-10-05 22:17:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:41,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:41,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:41,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:41,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:41,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787227894] [2020-10-05 22:17:41,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:41,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:41,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:41,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:41,156 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-05 22:17:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:41,453 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-05 22:17:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:41,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:41,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:41,455 INFO L225 Difference]: With dead ends: 177 [2020-10-05 22:17:41,455 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 22:17:41,456 INFO L675 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 [2020-10-05 22:17:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 22:17:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-05 22:17:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-05 22:17:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-05 22:17:41,460 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-05 22:17:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:41,460 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-05 22:17:41,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-05 22:17:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:41,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:41,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:41,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-05 22:17:41,671 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-05 22:17:41,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:41,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899588057] [2020-10-05 22:17:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899588057] [2020-10-05 22:17:41,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781122932] [2020-10-05 22:17:41,731 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 [2020-10-05 22:17:41,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:41,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:41,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:41,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:41,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:41,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009896545] [2020-10-05 22:17:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:41,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:41,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:41,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:41,850 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-05 22:17:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:42,231 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-05 22:17:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:17:42,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:42,233 INFO L225 Difference]: With dead ends: 190 [2020-10-05 22:17:42,234 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:17:42,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:17:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:17:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-05 22:17:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-05 22:17:42,238 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-05 22:17:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:42,238 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-05 22:17:42,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-05 22:17:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:42,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:42,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:42,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-05 22:17:42,439 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:42,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-05 22:17:42,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:42,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465504846] [2020-10-05 22:17:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:42,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465504846] [2020-10-05 22:17:42,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566508681] [2020-10-05 22:17:42,494 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 [2020-10-05 22:17:42,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:42,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:42,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:42,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:42,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:42,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013081833] [2020-10-05 22:17:42,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:42,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:42,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:42,618 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-05 22:17:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:42,964 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-05 22:17:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:42,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:42,966 INFO L225 Difference]: With dead ends: 180 [2020-10-05 22:17:42,966 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 22:17:42,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:17:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 22:17:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-05 22:17:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-05 22:17:42,970 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-05 22:17:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:42,970 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-05 22:17:42,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-05 22:17:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:42,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:42,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:43,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-05 22:17:43,172 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-05 22:17:43,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:43,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998272056] [2020-10-05 22:17:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998272056] [2020-10-05 22:17:43,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187121019] [2020-10-05 22:17:43,233 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 [2020-10-05 22:17:43,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:43,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:43,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:43,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:43,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:43,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731452004] [2020-10-05 22:17:43,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:43,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:43,357 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-05 22:17:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:43,500 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-05 22:17:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:43,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:43,502 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:43,502 INFO L226 Difference]: Without dead ends: 162 [2020-10-05 22:17:43,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:17:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-05 22:17:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-05 22:17:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-05 22:17:43,506 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-05 22:17:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:43,507 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-05 22:17:43,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-05 22:17:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:43,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:43,507 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:43,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-05 22:17:43,717 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-05 22:17:43,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:43,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126387804] [2020-10-05 22:17:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126387804] [2020-10-05 22:17:43,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981751627] [2020-10-05 22:17:43,778 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 [2020-10-05 22:17:43,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:43,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:43,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:43,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:43,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:43,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713212154] [2020-10-05 22:17:43,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:43,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:43,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:43,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:43,971 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-05 22:17:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:44,134 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-05 22:17:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:44,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:44,136 INFO L225 Difference]: With dead ends: 161 [2020-10-05 22:17:44,136 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:44,136 INFO L675 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 [2020-10-05 22:17:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-05 22:17:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-05 22:17:44,140 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-05 22:17:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:44,141 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-05 22:17:44,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-05 22:17:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:44,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:44,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-05 22:17:44,350 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-05 22:17:44,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:44,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343895541] [2020-10-05 22:17:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343895541] [2020-10-05 22:17:44,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057345249] [2020-10-05 22:17:44,425 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 [2020-10-05 22:17:44,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:44,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:44,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:44,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:44,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:44,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563595755] [2020-10-05 22:17:44,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:44,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:44,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:44,628 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-05 22:17:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:44,842 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-05 22:17:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:44,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:44,844 INFO L225 Difference]: With dead ends: 165 [2020-10-05 22:17:44,844 INFO L226 Difference]: Without dead ends: 163 [2020-10-05 22:17:44,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:17:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-05 22:17:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-05 22:17:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-05 22:17:44,848 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-05 22:17:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:44,849 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-05 22:17:44,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-05 22:17:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:44,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:44,849 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:45,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-05 22:17:45,060 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-05 22:17:45,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:45,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026936024] [2020-10-05 22:17:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026936024] [2020-10-05 22:17:45,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016818494] [2020-10-05 22:17:45,115 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 [2020-10-05 22:17:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:45,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:45,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:45,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930063316] [2020-10-05 22:17:45,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:45,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:45,254 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-05 22:17:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:45,456 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-05 22:17:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:45,456 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:45,458 INFO L225 Difference]: With dead ends: 167 [2020-10-05 22:17:45,458 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 22:17:45,458 INFO L675 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 [2020-10-05 22:17:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 22:17:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-05 22:17:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 22:17:45,462 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 22:17:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:45,462 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 22:17:45,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 22:17:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:45,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:45,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:45,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:45,664 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-05 22:17:45,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:45,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402738544] [2020-10-05 22:17:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402738544] [2020-10-05 22:17:45,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041268410] [2020-10-05 22:17:45,721 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 [2020-10-05 22:17:45,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:45,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:45,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:45,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:45,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:45,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536595835] [2020-10-05 22:17:45,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:45,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:45,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:45,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:45,850 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:46,101 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-05 22:17:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:46,101 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:46,103 INFO L225 Difference]: With dead ends: 168 [2020-10-05 22:17:46,103 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 22:17:46,103 INFO L675 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 [2020-10-05 22:17:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 22:17:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-05 22:17:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 22:17:46,106 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 22:17:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:46,106 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 22:17:46,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 22:17:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:46,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:46,107 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:46,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:46,308 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:46,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-05 22:17:46,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:46,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930487115] [2020-10-05 22:17:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930487115] [2020-10-05 22:17:46,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933928839] [2020-10-05 22:17:46,361 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 [2020-10-05 22:17:46,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:46,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:46,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:46,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:46,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:46,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:46,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254785230] [2020-10-05 22:17:46,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:46,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:46,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:46,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:46,472 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:46,659 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-05 22:17:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:46,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:46,661 INFO L225 Difference]: With dead ends: 160 [2020-10-05 22:17:46,661 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 22:17:46,662 INFO L675 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 [2020-10-05 22:17:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 22:17:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-05 22:17:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 22:17:46,665 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 22:17:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:46,665 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 22:17:46,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 22:17:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:46,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:46,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:46,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:46,876 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-05 22:17:46,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:46,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115261500] [2020-10-05 22:17:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115261500] [2020-10-05 22:17:46,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371365171] [2020-10-05 22:17:46,934 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 [2020-10-05 22:17:47,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:47,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:47,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:47,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:47,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:47,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:47,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:47,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819819973] [2020-10-05 22:17:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:47,132 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:47,459 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-05 22:17:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:47,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:47,461 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:17:47,461 INFO L226 Difference]: Without dead ends: 181 [2020-10-05 22:17:47,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:17:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-05 22:17:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-05 22:17:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 22:17:47,465 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 22:17:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:47,465 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 22:17:47,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 22:17:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:47,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:47,466 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:47,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:47,676 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-05 22:17:47,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:47,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132554622] [2020-10-05 22:17:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:47,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132554622] [2020-10-05 22:17:47,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617735239] [2020-10-05 22:17:47,734 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 [2020-10-05 22:17:47,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:47,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:47,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:47,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:47,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:47,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:47,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385381839] [2020-10-05 22:17:47,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:47,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:47,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:47,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:47,861 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:48,105 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-05 22:17:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:48,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:48,107 INFO L225 Difference]: With dead ends: 169 [2020-10-05 22:17:48,107 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 22:17:48,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:17:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 22:17:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-05 22:17:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 22:17:48,111 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 22:17:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:48,112 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 22:17:48,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 22:17:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:48,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:48,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:48,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-05 22:17:48,313 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-05 22:17:48,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:48,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971304486] [2020-10-05 22:17:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971304486] [2020-10-05 22:17:48,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112713992] [2020-10-05 22:17:48,371 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 [2020-10-05 22:17:48,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:48,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:48,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:48,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:48,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:48,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:48,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839303024] [2020-10-05 22:17:48,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:48,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:48,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:48,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:48,505 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:48,849 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-05 22:17:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:17:48,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:48,851 INFO L225 Difference]: With dead ends: 192 [2020-10-05 22:17:48,851 INFO L226 Difference]: Without dead ends: 184 [2020-10-05 22:17:48,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:17:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-05 22:17:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-05 22:17:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 22:17:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-05 22:17:48,855 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-05 22:17:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:48,855 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-05 22:17:48,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-05 22:17:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:48,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:48,856 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:49,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:49,068 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-05 22:17:49,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:49,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407696119] [2020-10-05 22:17:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:49,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407696119] [2020-10-05 22:17:49,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606569461] [2020-10-05 22:17:49,126 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 [2020-10-05 22:17:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:49,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:49,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:49,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:49,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:49,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249820970] [2020-10-05 22:17:49,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:49,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:49,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:49,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:49,254 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-05 22:17:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:49,588 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-05 22:17:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:49,588 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:49,590 INFO L225 Difference]: With dead ends: 180 [2020-10-05 22:17:49,590 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 22:17:49,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:17:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 22:17:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-05 22:17:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 22:17:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-05 22:17:49,594 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-05 22:17:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:49,594 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-05 22:17:49,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-05 22:17:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:49,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:49,595 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:49,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-05 22:17:49,804 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-05 22:17:49,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:49,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484527384] [2020-10-05 22:17:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:49,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484527384] [2020-10-05 22:17:49,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245677529] [2020-10-05 22:17:49,878 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 [2020-10-05 22:17:49,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:49,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:49,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:49,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:50,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:50,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 22:17:50,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812608214] [2020-10-05 22:17:50,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 22:17:50,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 22:17:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:50,062 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-05 22:17:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:50,209 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-05 22:17:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:50,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-05 22:17:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:50,211 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:50,211 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:50,211 INFO L675 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 [2020-10-05 22:17:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 22:17:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-05 22:17:50,214 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-05 22:17:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:50,214 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-05 22:17:50,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 22:17:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-05 22:17:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:50,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:50,215 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:50,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:50,416 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:50,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-05 22:17:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:50,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183718128] [2020-10-05 22:17:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183718128] [2020-10-05 22:17:50,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852541385] [2020-10-05 22:17:50,537 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 [2020-10-05 22:17:50,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:50,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:50,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:50,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:50,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:50,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849837168] [2020-10-05 22:17:50,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:50,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:50,701 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-05 22:17:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:50,755 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:50,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:50,757 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:50,758 INFO L226 Difference]: Without dead ends: 153 [2020-10-05 22:17:50,758 INFO L675 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 [2020-10-05 22:17:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-05 22:17:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-05 22:17:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 22:17:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 22:17:50,762 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 22:17:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:50,762 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 22:17:50,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 22:17:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:50,763 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:50,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-05 22:17:50,973 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-05 22:17:50,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:50,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326777496] [2020-10-05 22:17:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326777496] [2020-10-05 22:17:51,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889745233] [2020-10-05 22:17:51,073 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 [2020-10-05 22:17:51,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:51,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:51,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:51,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:51,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:51,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771202599] [2020-10-05 22:17:51,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:51,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:51,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:51,239 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 22:17:51,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:51,301 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-05 22:17:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:51,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:51,303 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:17:51,303 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 22:17:51,303 INFO L675 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 [2020-10-05 22:17:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 22:17:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-05 22:17:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 22:17:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 22:17:51,307 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 22:17:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 22:17:51,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 22:17:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:51,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:51,308 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:51,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:51,518 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:51,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-05 22:17:51,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:51,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932760546] [2020-10-05 22:17:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932760546] [2020-10-05 22:17:51,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979497937] [2020-10-05 22:17:51,614 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 [2020-10-05 22:17:51,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:51,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:51,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:51,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:51,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:51,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790942692] [2020-10-05 22:17:51,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:51,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:51,764 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 22:17:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:51,850 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-05 22:17:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:51,851 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:51,852 INFO L225 Difference]: With dead ends: 169 [2020-10-05 22:17:51,852 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 22:17:51,853 INFO L675 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 [2020-10-05 22:17:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 22:17:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-05 22:17:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 22:17:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-05 22:17:51,855 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-05 22:17:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:51,855 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-05 22:17:51,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-05 22:17:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:51,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:51,856 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:52,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:52,057 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:52,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-05 22:17:52,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:52,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475354132] [2020-10-05 22:17:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475354132] [2020-10-05 22:17:52,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747321475] [2020-10-05 22:17:52,140 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 [2020-10-05 22:17:52,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:52,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:52,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:52,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:52,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472884851] [2020-10-05 22:17:52,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:52,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:52,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:52,298 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-05 22:17:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:52,409 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-05 22:17:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:52,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:52,411 INFO L225 Difference]: With dead ends: 168 [2020-10-05 22:17:52,411 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 22:17:52,411 INFO L675 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 [2020-10-05 22:17:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 22:17:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-05 22:17:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 22:17:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-05 22:17:52,415 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-05 22:17:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:52,415 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-05 22:17:52,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-05 22:17:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:52,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:52,416 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-05 22:17:52,626 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-05 22:17:52,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:52,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660137888] [2020-10-05 22:17:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660137888] [2020-10-05 22:17:52,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075268944] [2020-10-05 22:17:52,711 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 [2020-10-05 22:17:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:52,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:52,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:52,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:52,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834615302] [2020-10-05 22:17:52,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:52,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:52,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:52,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:52,869 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-05 22:17:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:53,005 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-05 22:17:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:53,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:53,007 INFO L225 Difference]: With dead ends: 167 [2020-10-05 22:17:53,007 INFO L226 Difference]: Without dead ends: 164 [2020-10-05 22:17:53,008 INFO L675 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 [2020-10-05 22:17:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-05 22:17:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-05 22:17:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 22:17:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-05 22:17:53,011 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-05 22:17:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:53,012 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-05 22:17:53,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-05 22:17:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:53,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:53,013 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:53,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:53,215 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-05 22:17:53,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:53,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417857966] [2020-10-05 22:17:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417857966] [2020-10-05 22:17:53,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348327428] [2020-10-05 22:17:53,287 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 [2020-10-05 22:17:53,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:53,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:53,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:53,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:53,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:53,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:53,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939815578] [2020-10-05 22:17:53,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:53,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:53,445 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-05 22:17:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:53,617 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-05 22:17:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:53,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:53,619 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:53,619 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 22:17:53,620 INFO L675 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 [2020-10-05 22:17:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 22:17:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-05 22:17:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 22:17:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-05 22:17:53,625 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-05 22:17:53,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:53,625 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-05 22:17:53,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:53,626 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-05 22:17:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:53,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:53,627 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:53,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:53,840 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:53,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-05 22:17:53,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:53,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322233474] [2020-10-05 22:17:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322233474] [2020-10-05 22:17:53,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558013361] [2020-10-05 22:17:53,963 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 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 [2020-10-05 22:17:54,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:54,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:54,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:54,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155702862] [2020-10-05 22:17:54,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:54,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:54,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:54,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:54,207 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-05 22:17:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:54,277 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-05 22:17:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:54,278 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:54,279 INFO L225 Difference]: With dead ends: 163 [2020-10-05 22:17:54,279 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:54,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-05 22:17:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:17:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-05 22:17:54,285 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-05 22:17:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:54,285 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-05 22:17:54,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-05 22:17:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:54,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:54,287 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:54,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-05 22:17:54,499 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-05 22:17:54,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:54,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879230123] [2020-10-05 22:17:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879230123] [2020-10-05 22:17:54,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596515372] [2020-10-05 22:17:54,626 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 [2020-10-05 22:17:54,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:54,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:54,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:54,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454357673] [2020-10-05 22:17:54,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:54,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:54,874 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-05 22:17:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:55,041 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-05 22:17:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:55,041 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:55,043 INFO L225 Difference]: With dead ends: 172 [2020-10-05 22:17:55,043 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 22:17:55,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:17:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 22:17:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-05 22:17:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 22:17:55,046 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 22:17:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:55,047 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 22:17:55,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 22:17:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:55,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:55,047 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:55,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:55,255 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-05 22:17:55,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:55,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053416914] [2020-10-05 22:17:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:55,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053416914] [2020-10-05 22:17:55,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868979330] [2020-10-05 22:17:55,341 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 [2020-10-05 22:17:55,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:55,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:55,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:55,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:56,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:56,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161146811] [2020-10-05 22:17:56,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:56,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:56,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:56,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:56,122 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 22:17:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:56,324 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 22:17:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:56,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:56,327 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:56,327 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:56,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:17:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-05 22:17:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 22:17:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-05 22:17:56,333 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-05 22:17:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:56,333 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-05 22:17:56,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-05 22:17:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:56,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:56,334 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:56,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-05 22:17:56,541 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:56,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:56,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-05 22:17:56,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:56,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299670016] [2020-10-05 22:17:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299670016] [2020-10-05 22:17:56,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033971914] [2020-10-05 22:17:56,626 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 [2020-10-05 22:17:56,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:56,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:56,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:56,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:56,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:56,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100644431] [2020-10-05 22:17:56,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:56,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:56,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:56,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:56,784 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-05 22:17:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:56,981 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 22:17:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:56,981 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:56,983 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:56,983 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:56,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:17:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-05 22:17:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 22:17:56,987 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 22:17:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:56,987 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 22:17:56,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 22:17:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:56,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:56,988 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:57,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-05 22:17:57,196 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-05 22:17:57,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:57,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651916009] [2020-10-05 22:17:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651916009] [2020-10-05 22:17:57,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868391832] [2020-10-05 22:17:57,281 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 [2020-10-05 22:17:57,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:57,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:57,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:57,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:57,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:57,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178510949] [2020-10-05 22:17:57,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:57,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:57,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:57,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:57,427 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 22:17:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:57,635 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-05 22:17:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:57,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:57,637 INFO L225 Difference]: With dead ends: 184 [2020-10-05 22:17:57,637 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:17:57,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:17:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:17:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-05 22:17:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-05 22:17:57,641 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-05 22:17:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:57,641 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-05 22:17:57,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-05 22:17:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:57,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:57,641 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:57,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-05 22:17:57,842 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-05 22:17:57,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:57,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68633146] [2020-10-05 22:17:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68633146] [2020-10-05 22:17:57,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956898280] [2020-10-05 22:17:57,926 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 [2020-10-05 22:17:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:57,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:57,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:58,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:58,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114432140] [2020-10-05 22:17:58,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:58,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:58,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:58,100 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-05 22:17:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:58,345 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-05 22:17:58,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:58,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:58,347 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:58,347 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:58,347 INFO L675 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 [2020-10-05 22:17:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-05 22:17:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-05 22:17:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-05 22:17:58,350 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-05 22:17:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:58,350 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-05 22:17:58,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-05 22:17:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:58,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:58,351 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:58,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:58,552 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-05 22:17:58,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:58,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223878379] [2020-10-05 22:17:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223878379] [2020-10-05 22:17:58,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213017111] [2020-10-05 22:17:58,646 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 [2020-10-05 22:17:58,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:58,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:58,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:58,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:58,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:58,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483827746] [2020-10-05 22:17:58,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:58,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:58,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:58,807 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-05 22:17:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:58,975 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-05 22:17:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:58,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:58,978 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:58,978 INFO L226 Difference]: Without dead ends: 174 [2020-10-05 22:17:58,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:17:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-05 22:17:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-05 22:17:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:17:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-05 22:17:58,981 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-05 22:17:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:58,981 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-05 22:17:58,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-05 22:17:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:58,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:58,982 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:59,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:59,183 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-05 22:17:59,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:59,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929133821] [2020-10-05 22:17:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929133821] [2020-10-05 22:17:59,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581404253] [2020-10-05 22:17:59,284 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 [2020-10-05 22:17:59,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:59,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:59,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:59,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:59,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:59,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602155229] [2020-10-05 22:17:59,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:59,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:59,458 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-05 22:17:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:59,660 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 22:17:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:59,661 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:59,662 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:17:59,662 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:17:59,663 INFO L675 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 [2020-10-05 22:17:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:17:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-05 22:17:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:17:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-05 22:17:59,667 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-05 22:17:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:59,669 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-05 22:17:59,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-05 22:17:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:59,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:59,670 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:59,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:59,883 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:59,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-05 22:17:59,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:59,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384495287] [2020-10-05 22:17:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384495287] [2020-10-05 22:17:59,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970870397] [2020-10-05 22:17:59,998 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 [2020-10-05 22:18:00,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:00,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:00,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:00,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:00,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:00,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271529853] [2020-10-05 22:18:00,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:00,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:00,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:00,163 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-05 22:18:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:00,351 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 22:18:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:18:00,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:00,353 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:18:00,353 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:18:00,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:18:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:18:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-05 22:18:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:18:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-05 22:18:00,357 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-05 22:18:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:00,357 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-05 22:18:00,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-05 22:18:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:00,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:00,358 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:00,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:00,568 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-05 22:18:00,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:00,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038143428] [2020-10-05 22:18:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038143428] [2020-10-05 22:18:00,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878247830] [2020-10-05 22:18:00,726 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 [2020-10-05 22:18:00,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:00,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:00,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:00,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:00,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:00,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050389504] [2020-10-05 22:18:00,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:00,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:00,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:00,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:00,940 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-05 22:18:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:01,014 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-05 22:18:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:18:01,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:01,016 INFO L225 Difference]: With dead ends: 182 [2020-10-05 22:18:01,016 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 22:18:01,016 INFO L675 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 [2020-10-05 22:18:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 22:18:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-05 22:18:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:18:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-05 22:18:01,022 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-05 22:18:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:01,023 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-05 22:18:01,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-05 22:18:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:01,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:01,024 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:01,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-05 22:18:01,237 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-05 22:18:01,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:01,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985033273] [2020-10-05 22:18:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985033273] [2020-10-05 22:18:01,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157442161] [2020-10-05 22:18:01,339 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 [2020-10-05 22:18:01,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:01,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:01,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:01,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:01,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:01,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758021570] [2020-10-05 22:18:01,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:01,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:01,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:01,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:01,499 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-05 22:18:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:01,679 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-05 22:18:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:18:01,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:01,681 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:18:01,681 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:18:01,682 INFO L675 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 [2020-10-05 22:18:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:18:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-05 22:18:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 22:18:01,686 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 22:18:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:01,686 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 22:18:01,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 22:18:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:01,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:01,687 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:01,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:01,888 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:01,888 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-05 22:18:01,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:01,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523966623] [2020-10-05 22:18:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523966623] [2020-10-05 22:18:01,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639815947] [2020-10-05 22:18:01,986 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 [2020-10-05 22:18:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:02,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:02,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:02,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:02,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095697029] [2020-10-05 22:18:02,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:02,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:02,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:02,192 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:02,419 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-05 22:18:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:18:02,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:02,421 INFO L225 Difference]: With dead ends: 191 [2020-10-05 22:18:02,421 INFO L226 Difference]: Without dead ends: 189 [2020-10-05 22:18:02,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:18:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-05 22:18:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-05 22:18:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:18:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-05 22:18:02,425 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-05 22:18:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:02,425 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-05 22:18:02,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-05 22:18:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:02,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:02,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:02,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:02,627 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-05 22:18:02,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:02,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321048054] [2020-10-05 22:18:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321048054] [2020-10-05 22:18:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932043427] [2020-10-05 22:18:02,713 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 [2020-10-05 22:18:02,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:02,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:02,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:02,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053315103] [2020-10-05 22:18:02,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:02,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:02,868 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-05 22:18:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:03,116 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-05 22:18:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:03,117 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:03,119 INFO L225 Difference]: With dead ends: 187 [2020-10-05 22:18:03,119 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 22:18:03,119 INFO L675 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 [2020-10-05 22:18:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 22:18:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-05 22:18:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 22:18:03,123 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 22:18:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:03,123 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 22:18:03,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 22:18:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:03,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:03,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:03,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-05 22:18:03,324 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-05 22:18:03,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:03,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12286839] [2020-10-05 22:18:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:03,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12286839] [2020-10-05 22:18:03,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880652442] [2020-10-05 22:18:03,404 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 [2020-10-05 22:18:03,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:03,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:03,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:03,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:03,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:03,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371344657] [2020-10-05 22:18:03,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:03,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:03,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:03,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:03,542 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:03,787 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-05 22:18:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:03,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:03,789 INFO L225 Difference]: With dead ends: 198 [2020-10-05 22:18:03,790 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:18:03,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:18:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-05 22:18:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-05 22:18:03,793 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-05 22:18:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:03,793 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-05 22:18:03,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-05 22:18:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:03,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:03,794 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:03,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:03,995 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-05 22:18:03,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:03,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510961803] [2020-10-05 22:18:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510961803] [2020-10-05 22:18:04,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739588947] [2020-10-05 22:18:04,087 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 [2020-10-05 22:18:04,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:04,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:04,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:04,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:04,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:04,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179796729] [2020-10-05 22:18:04,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:04,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:04,261 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-05 22:18:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:04,536 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-05 22:18:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:04,537 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:04,538 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:18:04,538 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 22:18:04,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 22:18:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-05 22:18:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:18:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-05 22:18:04,542 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-05 22:18:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:04,542 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-05 22:18:04,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-05 22:18:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:04,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:04,543 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:04,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-05 22:18:04,747 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-05 22:18:04,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:04,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255028013] [2020-10-05 22:18:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255028013] [2020-10-05 22:18:04,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927012526] [2020-10-05 22:18:04,859 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 [2020-10-05 22:18:04,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:04,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:04,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:04,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:05,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:05,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638416257] [2020-10-05 22:18:05,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:05,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:05,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:05,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:05,026 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-05 22:18:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:05,123 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-05 22:18:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:18:05,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:05,125 INFO L225 Difference]: With dead ends: 178 [2020-10-05 22:18:05,126 INFO L226 Difference]: Without dead ends: 176 [2020-10-05 22:18:05,126 INFO L675 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 [2020-10-05 22:18:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-05 22:18:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-05 22:18:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-05 22:18:05,129 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-05 22:18:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:05,129 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-05 22:18:05,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-05 22:18:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:05,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:05,130 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:05,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:05,330 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-05 22:18:05,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:05,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419866138] [2020-10-05 22:18:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419866138] [2020-10-05 22:18:05,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117701380] [2020-10-05 22:18:05,421 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 [2020-10-05 22:18:05,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:05,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:05,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:05,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:05,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:05,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758413263] [2020-10-05 22:18:05,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:05,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:05,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:05,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:05,585 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-05 22:18:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:05,788 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-05 22:18:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:05,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:05,790 INFO L225 Difference]: With dead ends: 193 [2020-10-05 22:18:05,790 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 22:18:05,790 INFO L675 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 [2020-10-05 22:18:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 22:18:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-05 22:18:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-05 22:18:05,794 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-05 22:18:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:05,795 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-05 22:18:05,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-05 22:18:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:05,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:05,796 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:06,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-05 22:18:06,004 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:06,004 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-05 22:18:06,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:06,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830960430] [2020-10-05 22:18:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830960430] [2020-10-05 22:18:06,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851161910] [2020-10-05 22:18:06,085 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 [2020-10-05 22:18:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:06,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:06,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:06,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:06,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131403571] [2020-10-05 22:18:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:06,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:06,278 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-05 22:18:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:06,542 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-05 22:18:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:06,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:06,544 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:18:06,544 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 22:18:06,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-05 22:18:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 22:18:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-05 22:18:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:18:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-05 22:18:06,548 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-05 22:18:06,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:06,548 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-05 22:18:06,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-05 22:18:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:06,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:06,549 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:06,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:06,749 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-05 22:18:06,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:06,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591278701] [2020-10-05 22:18:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591278701] [2020-10-05 22:18:06,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276266737] [2020-10-05 22:18:06,846 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 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 [2020-10-05 22:18:06,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:06,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:06,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:06,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:07,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:07,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:07,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254440544] [2020-10-05 22:18:07,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:07,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:07,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:07,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:07,041 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-05 22:18:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:07,157 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-05 22:18:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:18:07,158 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:07,160 INFO L225 Difference]: With dead ends: 174 [2020-10-05 22:18:07,160 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 22:18:07,160 INFO L675 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 [2020-10-05 22:18:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 22:18:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-05 22:18:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-05 22:18:07,164 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-05 22:18:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:07,164 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-05 22:18:07,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-05 22:18:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:07,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:07,164 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:07,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-05 22:18:07,365 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:07,366 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-05 22:18:07,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:07,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411480470] [2020-10-05 22:18:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:07,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411480470] [2020-10-05 22:18:07,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143686488] [2020-10-05 22:18:07,448 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 [2020-10-05 22:18:07,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:07,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:07,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:07,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:07,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:07,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:07,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525581636] [2020-10-05 22:18:07,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:07,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:07,611 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-05 22:18:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:07,854 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-05 22:18:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:07,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:07,857 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:18:07,857 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 22:18:07,857 INFO L675 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 [2020-10-05 22:18:07,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 22:18:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-05 22:18:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-05 22:18:07,861 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-05 22:18:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:07,861 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-05 22:18:07,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-05 22:18:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:07,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:07,861 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:08,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:08,062 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-05 22:18:08,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:08,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065937034] [2020-10-05 22:18:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065937034] [2020-10-05 22:18:08,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455254470] [2020-10-05 22:18:08,147 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 [2020-10-05 22:18:08,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:08,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:08,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:08,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144688029] [2020-10-05 22:18:08,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:08,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:08,304 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-05 22:18:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:08,433 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-05 22:18:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:18:08,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:08,435 INFO L225 Difference]: With dead ends: 175 [2020-10-05 22:18:08,435 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 22:18:08,436 INFO L675 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 [2020-10-05 22:18:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 22:18:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-05 22:18:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:08,440 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:08,440 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:08,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:08,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:08,441 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:08,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:08,644 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:08,644 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-05 22:18:08,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:08,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147867787] [2020-10-05 22:18:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147867787] [2020-10-05 22:18:08,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089807545] [2020-10-05 22:18:08,716 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 [2020-10-05 22:18:08,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:08,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:08,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:08,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:08,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:08,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:08,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684353689] [2020-10-05 22:18:08,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:08,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:08,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:08,896 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:09,230 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-05 22:18:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:09,230 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:09,231 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:18:09,231 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 22:18:09,232 INFO L675 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 [2020-10-05 22:18:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 22:18:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-05 22:18:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 22:18:09,235 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 22:18:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:09,235 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 22:18:09,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 22:18:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:09,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:09,236 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:09,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:09,437 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-05 22:18:09,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:09,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139458184] [2020-10-05 22:18:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:09,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139458184] [2020-10-05 22:18:09,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221522517] [2020-10-05 22:18:09,511 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 [2020-10-05 22:18:09,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:09,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:09,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:09,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:09,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:09,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716685762] [2020-10-05 22:18:09,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:09,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:09,678 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 22:18:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:09,944 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-05 22:18:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:18:09,944 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:09,945 INFO L225 Difference]: With dead ends: 187 [2020-10-05 22:18:09,945 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 22:18:09,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 22:18:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-05 22:18:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:09,949 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:09,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:09,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:09,950 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:10,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:10,151 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-05 22:18:10,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:10,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593387173] [2020-10-05 22:18:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:10,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593387173] [2020-10-05 22:18:10,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845685864] [2020-10-05 22:18:10,224 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 [2020-10-05 22:18:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:10,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:10,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:10,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:10,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:10,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:10,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684610188] [2020-10-05 22:18:10,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:10,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:10,407 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:10,877 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-05 22:18:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:18:10,878 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:10,879 INFO L225 Difference]: With dead ends: 212 [2020-10-05 22:18:10,879 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:18:10,879 INFO L675 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 [2020-10-05 22:18:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:18:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 22:18:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:10,882 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:10,882 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:10,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:10,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:10,884 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:11,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-05 22:18:11,088 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-05 22:18:11,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:11,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355337057] [2020-10-05 22:18:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:11,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355337057] [2020-10-05 22:18:11,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870499408] [2020-10-05 22:18:11,164 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 [2020-10-05 22:18:11,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:11,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:11,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:11,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:11,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:11,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:11,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:11,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520386240] [2020-10-05 22:18:11,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:11,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:11,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:11,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:11,326 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:11,632 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 22:18:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:11,633 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:11,635 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:18:11,635 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 22:18:11,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:18:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 22:18:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-05 22:18:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-05 22:18:11,639 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-05 22:18:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:11,640 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-05 22:18:11,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-05 22:18:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:11,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:11,641 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:11,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:11,851 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:11,852 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-05 22:18:11,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:11,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557572017] [2020-10-05 22:18:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:11,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557572017] [2020-10-05 22:18:11,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567686306] [2020-10-05 22:18:11,922 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 [2020-10-05 22:18:11,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:11,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:11,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:11,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:12,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:12,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:12,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71028568] [2020-10-05 22:18:12,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:12,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:12,150 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-05 22:18:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:12,435 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-05 22:18:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:12,436 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:12,437 INFO L225 Difference]: With dead ends: 198 [2020-10-05 22:18:12,437 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:18:12,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:18:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-05 22:18:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 22:18:12,441 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 22:18:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:12,442 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 22:18:12,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 22:18:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:12,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:12,443 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:12,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-05 22:18:12,645 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-05 22:18:12,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:12,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571856126] [2020-10-05 22:18:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:12,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571856126] [2020-10-05 22:18:12,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998593996] [2020-10-05 22:18:12,720 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 [2020-10-05 22:18:12,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:12,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:12,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:12,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:12,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:12,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:12,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126830473] [2020-10-05 22:18:12,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:12,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:12,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:12,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:12,926 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 22:18:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:13,338 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-05 22:18:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:18:13,339 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:13,341 INFO L225 Difference]: With dead ends: 209 [2020-10-05 22:18:13,341 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:18:13,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:18:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:18:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 22:18:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:13,346 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:13,346 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:13,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:13,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:13,347 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:13,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-05 22:18:13,552 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:13,552 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-05 22:18:13,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:13,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238289961] [2020-10-05 22:18:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:13,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238289961] [2020-10-05 22:18:13,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478406386] [2020-10-05 22:18:13,622 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 [2020-10-05 22:18:13,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:13,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:13,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:13,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:13,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:13,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:13,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:13,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108197455] [2020-10-05 22:18:13,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:13,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:13,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:13,828 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:14,353 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-05 22:18:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:18:14,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:14,356 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:18:14,356 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 22:18:14,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-05 22:18:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 22:18:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-05 22:18:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:18:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-05 22:18:14,360 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-05 22:18:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:14,361 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-05 22:18:14,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-05 22:18:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:14,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:14,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:14,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-05 22:18:14,572 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:14,572 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-05 22:18:14,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:14,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689745111] [2020-10-05 22:18:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:14,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689745111] [2020-10-05 22:18:14,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856276363] [2020-10-05 22:18:14,644 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 [2020-10-05 22:18:14,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:14,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:14,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:14,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:16,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:16,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:16,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:16,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483390453] [2020-10-05 22:18:16,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:16,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:16,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-05 22:18:16,942 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-05 22:18:21,266 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-05 22:18:25,498 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-05 22:18:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:25,978 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-05 22:18:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:18:25,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:25,979 INFO L225 Difference]: With dead ends: 236 [2020-10-05 22:18:25,979 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 22:18:25,979 INFO L675 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 [2020-10-05 22:18:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 22:18:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-05 22:18:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-05 22:18:25,983 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-05 22:18:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:25,983 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-05 22:18:25,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-05 22:18:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:25,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:25,984 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:26,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-05 22:18:26,192 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-05 22:18:26,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:26,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453831659] [2020-10-05 22:18:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:26,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453831659] [2020-10-05 22:18:26,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59381754] [2020-10-05 22:18:26,274 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 [2020-10-05 22:18:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:26,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:26,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:26,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:26,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:26,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:26,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:26,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616431492] [2020-10-05 22:18:26,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:26,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:26,503 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 15 states. [2020-10-05 22:18:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:27,081 INFO L93 Difference]: Finished difference Result 219 states and 522 transitions. [2020-10-05 22:18:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:18:27,082 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:27,083 INFO L225 Difference]: With dead ends: 219 [2020-10-05 22:18:27,083 INFO L226 Difference]: Without dead ends: 214 [2020-10-05 22:18:27,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-05 22:18:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-05 22:18:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-10-05 22:18:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:18:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-05 22:18:27,087 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-05 22:18:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:27,087 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-05 22:18:27,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-05 22:18:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:27,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:27,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:27,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:27,289 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:27,289 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-05 22:18:27,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:27,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467841487] [2020-10-05 22:18:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:27,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467841487] [2020-10-05 22:18:27,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723011655] [2020-10-05 22:18:27,365 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 [2020-10-05 22:18:27,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:27,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:27,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:27,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:27,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:27,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732583852] [2020-10-05 22:18:27,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:27,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:27,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:27,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:27,563 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-05 22:18:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:27,819 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-05 22:18:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:27,819 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:27,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:27,820 INFO L225 Difference]: With dead ends: 197 [2020-10-05 22:18:27,820 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 22:18:27,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 22:18:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-05 22:18:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-05 22:18:27,823 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-05 22:18:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:27,824 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-05 22:18:27,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-05 22:18:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:27,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:27,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:28,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:28,027 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-05 22:18:28,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:28,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656775959] [2020-10-05 22:18:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:28,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656775959] [2020-10-05 22:18:28,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840648514] [2020-10-05 22:18:28,096 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 [2020-10-05 22:18:28,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:28,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:28,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:28,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:28,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108660251] [2020-10-05 22:18:28,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:28,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:28,278 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-05 22:18:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:28,572 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-05 22:18:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:28,573 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:28,574 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:18:28,574 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:18:28,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:18:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-05 22:18:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-05 22:18:28,578 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-05 22:18:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:28,578 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-05 22:18:28,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-05 22:18:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:28,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:28,579 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:28,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-05 22:18:28,790 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-05 22:18:28,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:28,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219961977] [2020-10-05 22:18:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:28,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219961977] [2020-10-05 22:18:28,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512721549] [2020-10-05 22:18:28,868 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 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 [2020-10-05 22:18:28,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:28,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:28,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:28,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:29,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:29,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:29,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454817423] [2020-10-05 22:18:29,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:29,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:29,052 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-05 22:18:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:29,341 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-05 22:18:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:29,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:29,342 INFO L225 Difference]: With dead ends: 197 [2020-10-05 22:18:29,342 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 22:18:29,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 22:18:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-05 22:18:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-05 22:18:29,345 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-05 22:18:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:29,346 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-05 22:18:29,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-05 22:18:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:29,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:29,347 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:29,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-05 22:18:29,557 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-05 22:18:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:29,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133130981] [2020-10-05 22:18:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:29,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133130981] [2020-10-05 22:18:29,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785263047] [2020-10-05 22:18:29,628 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 [2020-10-05 22:18:29,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:29,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:29,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:29,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:29,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:29,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:29,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023839869] [2020-10-05 22:18:29,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:29,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:29,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:29,808 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-05 22:18:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:30,249 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-05 22:18:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 22:18:30,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:30,251 INFO L225 Difference]: With dead ends: 214 [2020-10-05 22:18:30,251 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 22:18:30,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:18:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 22:18:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-05 22:18:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:18:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-05 22:18:30,255 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-05 22:18:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:30,256 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-05 22:18:30,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-05 22:18:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:30,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:30,256 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:30,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-05 22:18:30,464 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-05 22:18:30,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:30,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576705610] [2020-10-05 22:18:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:30,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576705610] [2020-10-05 22:18:30,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510495598] [2020-10-05 22:18:30,541 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 [2020-10-05 22:18:30,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:30,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:30,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:30,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:30,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:30,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672289250] [2020-10-05 22:18:30,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:30,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:30,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:30,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:30,706 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-05 22:18:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:31,105 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-05 22:18:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:18:31,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:31,106 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:18:31,106 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 22:18:31,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:18:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 22:18:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-05 22:18:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 22:18:31,110 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 22:18:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:31,111 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 22:18:31,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 22:18:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:31,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:31,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:31,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:31,320 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-05 22:18:31,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:31,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368256861] [2020-10-05 22:18:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368256861] [2020-10-05 22:18:31,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385325267] [2020-10-05 22:18:31,398 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 [2020-10-05 22:18:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:31,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:31,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:31,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:31,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:31,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605211631] [2020-10-05 22:18:31,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:31,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:31,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:31,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:31,563 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 22:18:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:31,987 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-05 22:18:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:18:31,988 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:31,989 INFO L225 Difference]: With dead ends: 211 [2020-10-05 22:18:31,989 INFO L226 Difference]: Without dead ends: 209 [2020-10-05 22:18:31,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:18:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-05 22:18:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-05 22:18:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:18:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:18:31,993 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:18:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:31,994 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:18:31,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:18:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:31,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:31,994 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:32,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:32,195 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-05 22:18:32,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:32,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760967854] [2020-10-05 22:18:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:32,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760967854] [2020-10-05 22:18:32,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840897395] [2020-10-05 22:18:32,270 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 [2020-10-05 22:18:32,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:32,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:32,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:32,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:32,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:32,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:32,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:32,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532675985] [2020-10-05 22:18:32,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:32,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:32,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:32,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:32,428 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:18:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:32,901 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-05 22:18:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:18:32,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:32,902 INFO L225 Difference]: With dead ends: 211 [2020-10-05 22:18:32,902 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 22:18:32,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-05 22:18:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 22:18:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-05 22:18:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:18:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:18:32,905 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:18:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:32,905 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:18:32,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:18:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:32,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:32,906 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:33,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-05 22:18:33,107 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-05 22:18:33,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:33,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201436353] [2020-10-05 22:18:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:33,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201436353] [2020-10-05 22:18:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111775280] [2020-10-05 22:18:33,197 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 [2020-10-05 22:18:33,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:33,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:33,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:33,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:33,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:33,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:33,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:33,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22084822] [2020-10-05 22:18:33,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:33,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:33,385 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:18:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:34,004 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-05 22:18:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:18:34,004 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:34,005 INFO L225 Difference]: With dead ends: 227 [2020-10-05 22:18:34,005 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 22:18:34,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 22:18:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 22:18:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-05 22:18:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 22:18:34,008 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 22:18:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:34,009 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 22:18:34,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 22:18:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:34,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:34,009 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:34,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-05 22:18:34,213 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:34,213 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-05 22:18:34,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:34,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143924252] [2020-10-05 22:18:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:34,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143924252] [2020-10-05 22:18:34,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070778994] [2020-10-05 22:18:34,293 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 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 [2020-10-05 22:18:34,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:34,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:34,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:34,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:34,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:34,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:34,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258119322] [2020-10-05 22:18:34,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:34,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:34,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:34,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:34,462 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 22:18:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:34,946 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-05 22:18:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 22:18:34,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:34,948 INFO L225 Difference]: With dead ends: 221 [2020-10-05 22:18:34,948 INFO L226 Difference]: Without dead ends: 219 [2020-10-05 22:18:34,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-05 22:18:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-05 22:18:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-05 22:18:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:18:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:18:34,952 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:18:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:34,952 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:18:34,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:18:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:34,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:34,952 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:35,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:35,153 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:35,154 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-05 22:18:35,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:35,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103791167] [2020-10-05 22:18:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:35,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103791167] [2020-10-05 22:18:35,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516966403] [2020-10-05 22:18:35,232 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 [2020-10-05 22:18:35,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:35,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:35,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:35,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:35,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:35,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:35,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:35,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006265994] [2020-10-05 22:18:35,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:35,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:35,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:35,383 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:18:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:35,989 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-05 22:18:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:18:35,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:35,991 INFO L225 Difference]: With dead ends: 240 [2020-10-05 22:18:35,991 INFO L226 Difference]: Without dead ends: 232 [2020-10-05 22:18:35,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:18:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-05 22:18:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-05 22:18:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 22:18:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-05 22:18:35,995 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-05 22:18:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:35,995 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-05 22:18:35,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-05 22:18:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:35,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:35,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:36,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-05 22:18:36,197 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-05 22:18:36,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:36,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251954568] [2020-10-05 22:18:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:36,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251954568] [2020-10-05 22:18:36,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986869708] [2020-10-05 22:18:36,283 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 [2020-10-05 22:18:36,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:36,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:36,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:36,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:36,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:36,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:36,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:36,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828211295] [2020-10-05 22:18:36,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:36,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:36,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:36,432 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-05 22:18:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:37,063 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-05 22:18:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:18:37,063 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:37,064 INFO L225 Difference]: With dead ends: 238 [2020-10-05 22:18:37,064 INFO L226 Difference]: Without dead ends: 230 [2020-10-05 22:18:37,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:18:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-05 22:18:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-05 22:18:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 22:18:37,069 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 22:18:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:37,069 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 22:18:37,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 22:18:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:37,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:37,070 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:37,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:37,280 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-05 22:18:37,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:37,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432147489] [2020-10-05 22:18:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:37,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432147489] [2020-10-05 22:18:37,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708902983] [2020-10-05 22:18:37,354 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 [2020-10-05 22:18:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:37,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:37,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:37,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:37,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:37,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757471550] [2020-10-05 22:18:37,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:37,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:37,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:37,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:37,531 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 22:18:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:37,793 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-05 22:18:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:37,794 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:37,795 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:18:37,796 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 22:18:37,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 22:18:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-05 22:18:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 22:18:37,800 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 22:18:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:37,800 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 22:18:37,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 22:18:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:37,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:37,801 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:38,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-05 22:18:38,003 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:38,003 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-05 22:18:38,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:38,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867259760] [2020-10-05 22:18:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:38,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867259760] [2020-10-05 22:18:38,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21752618] [2020-10-05 22:18:38,083 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 [2020-10-05 22:18:38,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:38,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:38,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:38,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:38,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:38,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871364016] [2020-10-05 22:18:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:38,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:38,262 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 22:18:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:38,753 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-05 22:18:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:18:38,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:38,754 INFO L225 Difference]: With dead ends: 206 [2020-10-05 22:18:38,754 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 22:18:38,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:18:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 22:18:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-05 22:18:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-05 22:18:38,759 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-05 22:18:38,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:38,759 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-05 22:18:38,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-05 22:18:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:38,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:38,760 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:38,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:38,969 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-05 22:18:38,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:38,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050665405] [2020-10-05 22:18:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:39,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050665405] [2020-10-05 22:18:39,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387604637] [2020-10-05 22:18:39,050 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 [2020-10-05 22:18:39,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:18:39,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:39,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:39,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:39,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:42,384 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-05 22:18:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:42,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:42,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 22:18:42,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683413186] [2020-10-05 22:18:42,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 22:18:42,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 22:18:42,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-05 22:18:42,386 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-05 22:18:44,837 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-05 22:19:04,205 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-05 22:19:32,891 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-05 22:19:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:53,892 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-05 22:19:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-05 22:19:53,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 22:19:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:53,894 INFO L225 Difference]: With dead ends: 252 [2020-10-05 22:19:53,894 INFO L226 Difference]: Without dead ends: 247 [2020-10-05 22:19:53,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-05 22:19:53,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-05 22:19:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 139. [2020-10-05 22:19:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:19:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-05 22:19:53,899 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-05 22:19:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:53,899 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-05 22:19:53,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 22:19:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-05 22:19:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:53,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:53,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:54,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-05 22:19:54,110 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-05 22:19:54,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:54,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151925108] [2020-10-05 22:19:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:54,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151925108] [2020-10-05 22:19:54,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312806640] [2020-10-05 22:19:54,200 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 [2020-10-05 22:19:54,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:19:54,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:54,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:54,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:54,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:54,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:54,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489999846] [2020-10-05 22:19:54,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:54,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:54,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:54,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:54,378 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-05 22:19:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:54,598 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 22:19:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:19:54,599 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:54,600 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:19:54,600 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 22:19:54,601 INFO L675 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 [2020-10-05 22:19:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 22:19:54,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-05 22:19:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:19:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-05 22:19:54,604 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-05 22:19:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:54,604 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-05 22:19:54,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-05 22:19:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:54,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:54,604 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:54,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:54,805 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:54,806 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-05 22:19:54,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:54,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219561291] [2020-10-05 22:19:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:54,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219561291] [2020-10-05 22:19:54,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319319227] [2020-10-05 22:19:54,899 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 [2020-10-05 22:19:54,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:19:54,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:54,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:54,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:55,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:55,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:55,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746321375] [2020-10-05 22:19:55,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:55,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:55,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:55,120 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-05 22:19:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:55,439 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-05 22:19:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:19:55,440 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:55,440 INFO L225 Difference]: With dead ends: 205 [2020-10-05 22:19:55,441 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 22:19:55,441 INFO L675 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 [2020-10-05 22:19:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 22:19:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-05 22:19:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:19:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-05 22:19:55,444 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-05 22:19:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:55,445 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-05 22:19:55,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-05 22:19:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:55,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:55,446 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:55,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:55,648 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:55,649 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-05 22:19:55,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:55,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613946289] [2020-10-05 22:19:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:55,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613946289] [2020-10-05 22:19:55,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808174565] [2020-10-05 22:19:55,733 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 [2020-10-05 22:19:55,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:19:55,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:55,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:55,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:55,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:55,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793311859] [2020-10-05 22:19:55,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:55,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:55,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:55,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:55,901 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-05 22:19:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:56,173 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 22:19:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:19:56,174 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:56,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:56,175 INFO L225 Difference]: With dead ends: 201 [2020-10-05 22:19:56,175 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 22:19:56,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:19:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 22:19:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-05 22:19:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:19:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-05 22:19:56,178 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-05 22:19:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:56,178 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-05 22:19:56,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-05 22:19:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:56,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:56,179 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:56,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:56,380 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:56,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-05 22:19:56,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:56,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664330529] [2020-10-05 22:19:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:56,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664330529] [2020-10-05 22:19:56,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220115554] [2020-10-05 22:19:56,458 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 [2020-10-05 22:19:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:56,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:56,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:56,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:56,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069204440] [2020-10-05 22:19:56,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:56,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:56,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:56,705 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-05 22:19:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:57,047 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 22:19:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:19:57,048 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:57,050 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:19:57,050 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 22:19:57,050 INFO L675 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 [2020-10-05 22:19:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 22:19:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-05 22:19:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:19:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-05 22:19:57,055 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-05 22:19:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:57,056 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-05 22:19:57,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-05 22:19:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:57,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:57,057 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:57,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-05 22:19:57,269 INFO L427 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-05 22:19:57,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:57,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707293999] [2020-10-05 22:19:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:57,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707293999] [2020-10-05 22:19:57,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333634716] [2020-10-05 22:19:57,383 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 [2020-10-05 22:19:57,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:19:57,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:57,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:57,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:57,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:57,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:57,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495720930] [2020-10-05 22:19:57,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:57,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:57,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:57,678 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-05 22:19:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:58,158 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-05 22:19:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:19:58,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:58,160 INFO L225 Difference]: With dead ends: 209 [2020-10-05 22:19:58,161 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:19:58,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:19:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:19:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-05 22:19:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:19:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-05 22:19:58,166 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-05 22:19:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:58,166 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-05 22:19:58,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-05 22:19:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:58,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:58,167 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:58,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:58,380 INFO L427 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-05 22:19:58,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:58,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760698874] [2020-10-05 22:19:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:58,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760698874] [2020-10-05 22:19:58,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311684892] [2020-10-05 22:19:58,499 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 [2020-10-05 22:19:58,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:19:58,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:58,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:58,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:58,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655917362] [2020-10-05 22:19:58,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:58,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:58,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:58,768 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-05 22:19:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:59,225 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-05 22:19:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:19:59,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:59,227 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:19:59,227 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:19:59,228 INFO L675 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 [2020-10-05 22:19:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:19:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-05 22:19:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:19:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 22:19:59,232 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 22:19:59,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:59,233 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 22:19:59,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 22:19:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:59,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:59,234 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:59,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-05 22:19:59,444 INFO L427 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:59,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-05 22:19:59,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:59,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573840368] [2020-10-05 22:19:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:59,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573840368] [2020-10-05 22:19:59,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706745105] [2020-10-05 22:19:59,523 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 [2020-10-05 22:19:59,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:19:59,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:59,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:59,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:59,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:59,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102986219] [2020-10-05 22:19:59,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:59,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:59,711 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-05 22:20:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:00,039 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 22:20:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:00,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:00,041 INFO L225 Difference]: With dead ends: 201 [2020-10-05 22:20:00,041 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 22:20:00,041 INFO L675 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 [2020-10-05 22:20:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 22:20:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-05 22:20:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:20:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-05 22:20:00,044 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-05 22:20:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:00,044 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-05 22:20:00,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-05 22:20:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:00,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:00,045 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:00,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-05 22:20:00,246 INFO L427 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-05 22:20:00,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:00,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211617030] [2020-10-05 22:20:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:00,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211617030] [2020-10-05 22:20:00,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635891725] [2020-10-05 22:20:00,320 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 [2020-10-05 22:20:00,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:00,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:00,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:00,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:00,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:00,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:00,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476826740] [2020-10-05 22:20:00,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:00,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:00,512 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-05 22:20:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:00,985 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-05 22:20:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 22:20:00,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:00,986 INFO L225 Difference]: With dead ends: 215 [2020-10-05 22:20:00,986 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 22:20:00,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:20:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 22:20:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-05 22:20:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:20:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 22:20:00,990 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 22:20:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:00,990 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 22:20:00,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 22:20:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:00,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:00,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:01,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:01,194 INFO L427 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-05 22:20:01,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:01,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314739206] [2020-10-05 22:20:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:01,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314739206] [2020-10-05 22:20:01,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170166984] [2020-10-05 22:20:01,278 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 [2020-10-05 22:20:01,318 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:01,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:01,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:01,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:01,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:01,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:01,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205058493] [2020-10-05 22:20:01,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:01,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:01,450 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 22:20:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:01,834 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-05 22:20:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:01,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:01,835 INFO L225 Difference]: With dead ends: 196 [2020-10-05 22:20:01,835 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:20:01,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:20:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:20:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-05 22:20:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:20:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:20:01,839 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:20:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:01,840 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:20:01,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:20:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:01,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:01,841 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:02,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:02,043 INFO L427 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:02,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-05 22:20:02,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:02,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851326295] [2020-10-05 22:20:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:02,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851326295] [2020-10-05 22:20:02,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10530925] [2020-10-05 22:20:02,132 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 [2020-10-05 22:20:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:02,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:02,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:20:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:02,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:02,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:02,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817214857] [2020-10-05 22:20:02,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:02,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:02,285 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:20:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:02,598 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-05 22:20:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:20:02,598 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:02,599 INFO L225 Difference]: With dead ends: 191 [2020-10-05 22:20:02,599 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 22:20:02,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 22:20:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-05 22:20:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:20:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:20:02,602 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:20:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:02,602 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:20:02,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:20:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:02,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:02,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:02,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-05 22:20:02,803 INFO L427 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-05 22:20:02,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:02,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822550247] [2020-10-05 22:20:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:02,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822550247] [2020-10-05 22:20:02,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327376122] [2020-10-05 22:20:02,888 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 [2020-10-05 22:20:02,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:02,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:02,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:03,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:20:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:03,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:03,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:03,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866462874] [2020-10-05 22:20:03,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:03,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:03,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:03,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:03,186 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:20:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:03,973 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-05 22:20:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:20:03,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:03,976 INFO L225 Difference]: With dead ends: 232 [2020-10-05 22:20:03,976 INFO L226 Difference]: Without dead ends: 227 [2020-10-05 22:20:03,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-05 22:20:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-05 22:20:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-05 22:20:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:20:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 22:20:03,982 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 22:20:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:03,982 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 22:20:03,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 22:20:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:03,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:03,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:04,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:04,194 INFO L427 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-05 22:20:04,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:04,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224700429] [2020-10-05 22:20:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:04,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224700429] [2020-10-05 22:20:04,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338523514] [2020-10-05 22:20:04,281 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 [2020-10-05 22:20:04,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:04,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:04,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:04,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:04,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:04,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:04,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144078714] [2020-10-05 22:20:04,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:04,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:04,471 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 22:20:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:05,020 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-05 22:20:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 22:20:05,021 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:05,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:05,022 INFO L225 Difference]: With dead ends: 222 [2020-10-05 22:20:05,022 INFO L226 Difference]: Without dead ends: 220 [2020-10-05 22:20:05,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-05 22:20:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-05 22:20:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-05 22:20:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:20:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:20:05,025 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:20:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:05,026 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:20:05,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:20:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:05,026 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:05,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:05,227 INFO L427 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:05,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-05 22:20:05,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:05,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810857048] [2020-10-05 22:20:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:05,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810857048] [2020-10-05 22:20:05,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724097118] [2020-10-05 22:20:05,308 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 [2020-10-05 22:20:05,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:05,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:05,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:05,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:20:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:05,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:05,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:05,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024828852] [2020-10-05 22:20:05,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:05,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:05,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:05,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:05,509 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:20:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:06,303 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-05 22:20:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:20:06,304 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:06,305 INFO L225 Difference]: With dead ends: 254 [2020-10-05 22:20:06,305 INFO L226 Difference]: Without dead ends: 246 [2020-10-05 22:20:06,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:20:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-05 22:20:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-05 22:20:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:20:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-05 22:20:06,310 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-05 22:20:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:06,310 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-05 22:20:06,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-05 22:20:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:06,311 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:06,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:06,521 INFO L427 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-05 22:20:06,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:06,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165085090] [2020-10-05 22:20:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:06,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165085090] [2020-10-05 22:20:06,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499431235] [2020-10-05 22:20:06,599 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 [2020-10-05 22:20:06,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:06,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:06,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:06,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:06,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:20:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:06,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:06,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:06,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752973544] [2020-10-05 22:20:06,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:06,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:06,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:06,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:06,783 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-05 22:20:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:07,574 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-05 22:20:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:20:07,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:07,576 INFO L225 Difference]: With dead ends: 246 [2020-10-05 22:20:07,576 INFO L226 Difference]: Without dead ends: 238 [2020-10-05 22:20:07,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-05 22:20:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-05 22:20:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-05 22:20:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:20:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-05 22:20:07,580 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-05 22:20:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:07,581 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-05 22:20:07,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-05 22:20:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:07,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:07,581 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:07,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-05 22:20:07,792 INFO L427 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-05 22:20:07,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:07,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453309754] [2020-10-05 22:20:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:07,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453309754] [2020-10-05 22:20:07,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032574117] [2020-10-05 22:20:07,869 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 [2020-10-05 22:20:07,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:07,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:07,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:07,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:08,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:08,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:08,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805848350] [2020-10-05 22:20:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:08,049 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-05 22:20:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:08,471 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-05 22:20:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:20:08,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:08,473 INFO L225 Difference]: With dead ends: 208 [2020-10-05 22:20:08,473 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 22:20:08,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:20:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 22:20:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-05 22:20:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:20:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-05 22:20:08,477 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-05 22:20:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:08,477 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-05 22:20:08,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-05 22:20:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:08,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:08,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:08,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-05 22:20:08,678 INFO L427 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-05 22:20:08,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:08,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883821501] [2020-10-05 22:20:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:08,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883821501] [2020-10-05 22:20:08,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084662021] [2020-10-05 22:20:08,757 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 [2020-10-05 22:20:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:08,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:08,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:08,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:08,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238679843] [2020-10-05 22:20:08,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:08,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:08,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:08,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:08,931 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-05 22:20:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:09,463 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-05 22:20:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:20:09,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:09,465 INFO L225 Difference]: With dead ends: 215 [2020-10-05 22:20:09,465 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 22:20:09,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-05 22:20:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 22:20:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-05 22:20:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:20:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 22:20:09,469 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 22:20:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:09,469 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 22:20:09,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 22:20:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:09,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:09,469 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:09,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-05 22:20:09,671 INFO L427 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:09,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:09,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-05 22:20:09,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044445069] [2020-10-05 22:20:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:09,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044445069] [2020-10-05 22:20:09,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768513296] [2020-10-05 22:20:09,757 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 [2020-10-05 22:20:09,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:09,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:09,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:09,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:09,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:20:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:09,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:09,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:09,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710613425] [2020-10-05 22:20:09,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:09,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:09,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:09,911 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 22:20:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:10,511 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-05 22:20:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:20:10,512 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:10,513 INFO L225 Difference]: With dead ends: 236 [2020-10-05 22:20:10,513 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 22:20:10,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:20:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 22:20:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-05 22:20:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:20:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 22:20:10,516 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 22:20:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:10,516 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 22:20:10,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 22:20:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:10,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:10,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:10,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-05 22:20:10,718 INFO L427 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-05 22:20:10,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:10,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110971849] [2020-10-05 22:20:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:10,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110971849] [2020-10-05 22:20:10,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037671718] [2020-10-05 22:20:10,805 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 [2020-10-05 22:20:10,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:10,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:10,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:10,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:20:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:10,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:10,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:10,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803582021] [2020-10-05 22:20:10,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:10,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:10,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:10,979 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 22:20:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:11,631 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-05 22:20:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:20:11,632 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:11,633 INFO L225 Difference]: With dead ends: 241 [2020-10-05 22:20:11,633 INFO L226 Difference]: Without dead ends: 233 [2020-10-05 22:20:11,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:20:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-05 22:20:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-05 22:20:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-05 22:20:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-05 22:20:11,636 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-05 22:20:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:11,636 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-05 22:20:11,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-05 22:20:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:11,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:11,637 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:11,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-05 22:20:11,838 INFO L427 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-05 22:20:11,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:11,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159758881] [2020-10-05 22:20:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:11,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159758881] [2020-10-05 22:20:11,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74304356] [2020-10-05 22:20:11,929 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 [2020-10-05 22:20:11,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:11,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:11,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:11,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:12,084 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:20:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:12,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:12,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:12,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291694003] [2020-10-05 22:20:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:12,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:12,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:12,099 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-05 22:20:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:12,711 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-05 22:20:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:20:12,712 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:12,713 INFO L225 Difference]: With dead ends: 232 [2020-10-05 22:20:12,713 INFO L226 Difference]: Without dead ends: 224 [2020-10-05 22:20:12,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 22:20:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-05 22:20:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-05 22:20:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 22:20:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-05 22:20:12,716 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-05 22:20:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:12,717 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-05 22:20:12,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-05 22:20:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:12,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:12,717 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:12,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:12,918 INFO L427 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:12,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:12,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-05 22:20:12,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:12,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485393718] [2020-10-05 22:20:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:13,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485393718] [2020-10-05 22:20:13,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384079635] [2020-10-05 22:20:13,036 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 [2020-10-05 22:20:13,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 22:20:13,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:13,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:20:13,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:13,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 22:20:13,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-05 22:20:13,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434194427] [2020-10-05 22:20:13,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 22:20:13,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:13,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 22:20:13,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:20:13,168 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 8 states. [2020-10-05 22:20:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:13,197 INFO L93 Difference]: Finished difference Result 195 states and 513 transitions. [2020-10-05 22:20:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:20:13,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-05 22:20:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:13,199 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:20:13,199 INFO L226 Difference]: Without dead ends: 188 [2020-10-05 22:20:13,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:20:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-05 22:20:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-05 22:20:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-05 22:20:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 500 transitions. [2020-10-05 22:20:13,203 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 500 transitions. Word has length 13 [2020-10-05 22:20:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:13,203 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 500 transitions. [2020-10-05 22:20:13,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 22:20:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 500 transitions. [2020-10-05 22:20:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:13,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:13,204 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:13,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-05 22:20:13,415 INFO L427 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:13,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-05 22:20:13,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:13,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405853368] [2020-10-05 22:20:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:13,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405853368] [2020-10-05 22:20:13,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809845882] [2020-10-05 22:20:13,622 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 [2020-10-05 22:20:13,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 22:20:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:13,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:13,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:13,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:13,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:13,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387125773] [2020-10-05 22:20:13,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:13,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:13,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:13,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:13,864 INFO L87 Difference]: Start difference. First operand 188 states and 500 transitions. Second operand 17 states. [2020-10-05 22:20:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:13,922 INFO L93 Difference]: Finished difference Result 249 states and 638 transitions. [2020-10-05 22:20:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:20:13,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:20:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:13,923 INFO L225 Difference]: With dead ends: 249 [2020-10-05 22:20:13,923 INFO L226 Difference]: Without dead ends: 241 [2020-10-05 22:20:13,924 INFO L675 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 [2020-10-05 22:20:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-05 22:20:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 197. [2020-10-05 22:20:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-05 22:20:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 521 transitions. [2020-10-05 22:20:13,927 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 521 transitions. Word has length 13 [2020-10-05 22:20:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:13,927 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 521 transitions. [2020-10-05 22:20:13,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 521 transitions. [2020-10-05 22:20:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:13,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:13,928 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:14,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-05 22:20:14,132 INFO L427 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-05 22:20:14,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:14,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438082826] [2020-10-05 22:20:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:14,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438082826] [2020-10-05 22:20:14,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003690436] [2020-10-05 22:20:14,284 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 [2020-10-05 22:20:14,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:14,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:14,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:20:14,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:14,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 22:20:14,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-05 22:20:14,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723160123] [2020-10-05 22:20:14,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 22:20:14,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 22:20:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:20:14,410 INFO L87 Difference]: Start difference. First operand 197 states and 521 transitions. Second operand 8 states. [2020-10-05 22:20:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:14,436 INFO L93 Difference]: Finished difference Result 278 states and 705 transitions. [2020-10-05 22:20:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:20:14,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-05 22:20:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:14,438 INFO L225 Difference]: With dead ends: 278 [2020-10-05 22:20:14,438 INFO L226 Difference]: Without dead ends: 248 [2020-10-05 22:20:14,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:20:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-05 22:20:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2020-10-05 22:20:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-05 22:20:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 626 transitions. [2020-10-05 22:20:14,442 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 626 transitions. Word has length 13 [2020-10-05 22:20:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:14,442 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 626 transitions. [2020-10-05 22:20:14,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 22:20:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 626 transitions. [2020-10-05 22:20:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:14,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:14,443 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:14,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:14,653 INFO L427 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-05 22:20:14,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:14,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620264167] [2020-10-05 22:20:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:14,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620264167] [2020-10-05 22:20:14,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115815403] [2020-10-05 22:20:14,782 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 [2020-10-05 22:20:14,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:14,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:14,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:15,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:15,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:15,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366075653] [2020-10-05 22:20:15,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:15,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:15,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:15,080 INFO L87 Difference]: Start difference. First operand 240 states and 626 transitions. Second operand 17 states. [2020-10-05 22:20:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:15,143 INFO L93 Difference]: Finished difference Result 275 states and 692 transitions. [2020-10-05 22:20:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:20:15,144 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:15,145 INFO L225 Difference]: With dead ends: 275 [2020-10-05 22:20:15,145 INFO L226 Difference]: Without dead ends: 273 [2020-10-05 22:20:15,145 INFO L675 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 [2020-10-05 22:20:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-05 22:20:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-10-05 22:20:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-05 22:20:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 654 transitions. [2020-10-05 22:20:15,149 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 654 transitions. Word has length 14 [2020-10-05 22:20:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:15,150 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 654 transitions. [2020-10-05 22:20:15,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 654 transitions. [2020-10-05 22:20:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:15,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:15,150 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:15,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:15,351 INFO L427 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-05 22:20:15,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:15,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59991917] [2020-10-05 22:20:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:15,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59991917] [2020-10-05 22:20:15,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939168942] [2020-10-05 22:20:15,470 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 [2020-10-05 22:20:15,509 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:15,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:15,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:15,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:15,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:15,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:15,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758650204] [2020-10-05 22:20:15,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:15,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:15,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:15,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:15,690 INFO L87 Difference]: Start difference. First operand 250 states and 654 transitions. Second operand 17 states. [2020-10-05 22:20:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:15,919 INFO L93 Difference]: Finished difference Result 295 states and 735 transitions. [2020-10-05 22:20:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:20:15,920 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:15,923 INFO L225 Difference]: With dead ends: 295 [2020-10-05 22:20:15,923 INFO L226 Difference]: Without dead ends: 292 [2020-10-05 22:20:15,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-05 22:20:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-05 22:20:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 251. [2020-10-05 22:20:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-05 22:20:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 657 transitions. [2020-10-05 22:20:15,929 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 657 transitions. Word has length 14 [2020-10-05 22:20:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:15,929 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 657 transitions. [2020-10-05 22:20:15,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 657 transitions. [2020-10-05 22:20:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:15,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:15,930 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:16,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:16,145 INFO L427 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:16,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-05 22:20:16,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:16,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473961720] [2020-10-05 22:20:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:16,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473961720] [2020-10-05 22:20:16,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355617149] [2020-10-05 22:20:16,255 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 [2020-10-05 22:20:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:16,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:16,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:16,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:16,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:16,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932526827] [2020-10-05 22:20:16,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:16,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:16,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:16,994 INFO L87 Difference]: Start difference. First operand 251 states and 657 transitions. Second operand 17 states. [2020-10-05 22:20:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:17,287 INFO L93 Difference]: Finished difference Result 320 states and 793 transitions. [2020-10-05 22:20:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:20:17,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:17,289 INFO L225 Difference]: With dead ends: 320 [2020-10-05 22:20:17,289 INFO L226 Difference]: Without dead ends: 316 [2020-10-05 22:20:17,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:20:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-05 22:20:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 253. [2020-10-05 22:20:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-05 22:20:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 663 transitions. [2020-10-05 22:20:17,296 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 663 transitions. Word has length 14 [2020-10-05 22:20:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:17,296 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 663 transitions. [2020-10-05 22:20:17,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 663 transitions. [2020-10-05 22:20:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:17,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:17,296 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:17,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:17,497 INFO L427 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-05 22:20:17,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:17,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106246745] [2020-10-05 22:20:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:17,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106246745] [2020-10-05 22:20:17,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264478760] [2020-10-05 22:20:17,626 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 [2020-10-05 22:20:17,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:17,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:17,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:17,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:17,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:17,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552786862] [2020-10-05 22:20:17,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:17,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:17,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:17,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:17,963 INFO L87 Difference]: Start difference. First operand 253 states and 663 transitions. Second operand 17 states. [2020-10-05 22:20:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:18,304 INFO L93 Difference]: Finished difference Result 316 states and 781 transitions. [2020-10-05 22:20:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:20:18,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:18,306 INFO L225 Difference]: With dead ends: 316 [2020-10-05 22:20:18,306 INFO L226 Difference]: Without dead ends: 313 [2020-10-05 22:20:18,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-05 22:20:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 255. [2020-10-05 22:20:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-05 22:20:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 669 transitions. [2020-10-05 22:20:18,312 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 669 transitions. Word has length 14 [2020-10-05 22:20:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:18,313 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 669 transitions. [2020-10-05 22:20:18,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 669 transitions. [2020-10-05 22:20:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:18,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:18,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-05 22:20:18,516 INFO L427 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-05 22:20:18,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:18,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922954305] [2020-10-05 22:20:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:18,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922954305] [2020-10-05 22:20:18,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101294738] [2020-10-05 22:20:18,631 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 [2020-10-05 22:20:18,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:20:18,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:18,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:18,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:21,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:21,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:21,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69552324] [2020-10-05 22:20:21,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:21,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:20:21,636 INFO L87 Difference]: Start difference. First operand 255 states and 669 transitions. Second operand 17 states. [2020-10-05 22:20:25,858 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 22:20:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:26,129 INFO L93 Difference]: Finished difference Result 342 states and 843 transitions. [2020-10-05 22:20:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:20:26,130 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:26,131 INFO L225 Difference]: With dead ends: 342 [2020-10-05 22:20:26,131 INFO L226 Difference]: Without dead ends: 337 [2020-10-05 22:20:26,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-05 22:20:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-05 22:20:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 256. [2020-10-05 22:20:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-05 22:20:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-05 22:20:26,135 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-05 22:20:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:26,135 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-05 22:20:26,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-05 22:20:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:26,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:26,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:26,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-05 22:20:26,337 INFO L427 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-05 22:20:26,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:26,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002437657] [2020-10-05 22:20:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002437657] [2020-10-05 22:20:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026615760] [2020-10-05 22:20:26,460 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 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 [2020-10-05 22:20:26,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:26,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:26,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:26,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:26,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616333073] [2020-10-05 22:20:26,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:26,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:26,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:26,923 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-05 22:20:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:27,449 INFO L93 Difference]: Finished difference Result 331 states and 819 transitions. [2020-10-05 22:20:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:20:27,450 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:27,451 INFO L225 Difference]: With dead ends: 331 [2020-10-05 22:20:27,451 INFO L226 Difference]: Without dead ends: 327 [2020-10-05 22:20:27,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-05 22:20:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 256. [2020-10-05 22:20:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-05 22:20:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-05 22:20:27,458 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-05 22:20:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:27,458 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-05 22:20:27,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-05 22:20:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:27,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:27,459 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:27,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-05 22:20:27,671 INFO L427 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-05 22:20:27,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:27,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623581889] [2020-10-05 22:20:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:27,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623581889] [2020-10-05 22:20:27,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463681597] [2020-10-05 22:20:27,784 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 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 [2020-10-05 22:20:27,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:27,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:27,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:27,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:28,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:28,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:28,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119251136] [2020-10-05 22:20:28,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:28,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:28,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:28,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:28,012 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-05 22:20:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:28,355 INFO L93 Difference]: Finished difference Result 321 states and 792 transitions. [2020-10-05 22:20:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:20:28,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:28,357 INFO L225 Difference]: With dead ends: 321 [2020-10-05 22:20:28,357 INFO L226 Difference]: Without dead ends: 318 [2020-10-05 22:20:28,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:20:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-05 22:20:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 259. [2020-10-05 22:20:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 22:20:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-05 22:20:28,363 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-05 22:20:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:28,363 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-05 22:20:28,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-05 22:20:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:28,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:28,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:28,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-05 22:20:28,574 INFO L427 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-05 22:20:28,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:28,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501252805] [2020-10-05 22:20:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:28,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501252805] [2020-10-05 22:20:28,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716885394] [2020-10-05 22:20:28,688 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 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 [2020-10-05 22:20:28,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:20:28,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:28,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:28,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:28,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:28,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519037092] [2020-10-05 22:20:28,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:28,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:28,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:28,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:28,906 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-05 22:20:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:29,283 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-05 22:20:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:29,283 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:29,284 INFO L225 Difference]: With dead ends: 348 [2020-10-05 22:20:29,284 INFO L226 Difference]: Without dead ends: 343 [2020-10-05 22:20:29,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:20:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-05 22:20:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 260. [2020-10-05 22:20:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-05 22:20:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 684 transitions. [2020-10-05 22:20:29,289 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 684 transitions. Word has length 14 [2020-10-05 22:20:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:29,289 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 684 transitions. [2020-10-05 22:20:29,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 684 transitions. [2020-10-05 22:20:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:29,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:29,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:29,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-05 22:20:29,497 INFO L427 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-05 22:20:29,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:29,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535776550] [2020-10-05 22:20:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:29,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535776550] [2020-10-05 22:20:29,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852470584] [2020-10-05 22:20:29,614 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 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 [2020-10-05 22:20:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:29,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:29,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:29,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:29,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:29,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925456312] [2020-10-05 22:20:29,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:29,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:29,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:29,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:29,816 INFO L87 Difference]: Start difference. First operand 260 states and 684 transitions. Second operand 17 states. [2020-10-05 22:20:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:30,146 INFO L93 Difference]: Finished difference Result 349 states and 864 transitions. [2020-10-05 22:20:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:30,146 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:30,147 INFO L225 Difference]: With dead ends: 349 [2020-10-05 22:20:30,147 INFO L226 Difference]: Without dead ends: 344 [2020-10-05 22:20:30,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-05 22:20:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 259. [2020-10-05 22:20:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 22:20:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-05 22:20:30,152 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-05 22:20:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:30,152 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-05 22:20:30,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-05 22:20:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:30,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:30,153 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:30,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-05 22:20:30,353 INFO L427 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-05 22:20:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:30,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275264085] [2020-10-05 22:20:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:30,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275264085] [2020-10-05 22:20:30,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329174856] [2020-10-05 22:20:30,463 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 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 [2020-10-05 22:20:30,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:30,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:30,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:30,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:30,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:30,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:30,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842564694] [2020-10-05 22:20:30,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:30,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:30,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:30,667 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-05 22:20:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:30,944 INFO L93 Difference]: Finished difference Result 332 states and 822 transitions. [2020-10-05 22:20:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:20:30,944 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:30,945 INFO L225 Difference]: With dead ends: 332 [2020-10-05 22:20:30,945 INFO L226 Difference]: Without dead ends: 314 [2020-10-05 22:20:30,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-05 22:20:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 260. [2020-10-05 22:20:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-05 22:20:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 677 transitions. [2020-10-05 22:20:30,950 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 677 transitions. Word has length 14 [2020-10-05 22:20:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:30,950 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 677 transitions. [2020-10-05 22:20:30,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:30,950 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 677 transitions. [2020-10-05 22:20:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:30,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:30,950 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:31,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:31,151 INFO L427 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:31,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-05 22:20:31,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:31,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276862819] [2020-10-05 22:20:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:31,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276862819] [2020-10-05 22:20:31,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857538600] [2020-10-05 22:20:31,271 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 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 [2020-10-05 22:20:31,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 22:20:31,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:31,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:31,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:31,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891497327] [2020-10-05 22:20:31,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:31,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:31,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:31,475 INFO L87 Difference]: Start difference. First operand 260 states and 677 transitions. Second operand 17 states. [2020-10-05 22:20:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:31,750 INFO L93 Difference]: Finished difference Result 315 states and 779 transitions. [2020-10-05 22:20:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:20:31,751 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:31,753 INFO L225 Difference]: With dead ends: 315 [2020-10-05 22:20:31,753 INFO L226 Difference]: Without dead ends: 312 [2020-10-05 22:20:31,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-05 22:20:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 265. [2020-10-05 22:20:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-05 22:20:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-05 22:20:31,759 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-05 22:20:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:31,759 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-05 22:20:31,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-05 22:20:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:31,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:31,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:31,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:31,973 INFO L427 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:31,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-05 22:20:31,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:31,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382506528] [2020-10-05 22:20:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:32,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382506528] [2020-10-05 22:20:32,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522406406] [2020-10-05 22:20:32,099 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 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 [2020-10-05 22:20:32,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:32,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:32,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:32,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:32,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:32,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632985278] [2020-10-05 22:20:32,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:32,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:32,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:32,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:32,330 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-05 22:20:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:32,649 INFO L93 Difference]: Finished difference Result 334 states and 821 transitions. [2020-10-05 22:20:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:20:32,650 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:32,651 INFO L225 Difference]: With dead ends: 334 [2020-10-05 22:20:32,652 INFO L226 Difference]: Without dead ends: 330 [2020-10-05 22:20:32,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-05 22:20:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-10-05 22:20:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-05 22:20:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 687 transitions. [2020-10-05 22:20:32,657 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 687 transitions. Word has length 14 [2020-10-05 22:20:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:32,657 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 687 transitions. [2020-10-05 22:20:32,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 687 transitions. [2020-10-05 22:20:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:32,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:32,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:32,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:32,858 INFO L427 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-05 22:20:32,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:32,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956714033] [2020-10-05 22:20:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:32,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956714033] [2020-10-05 22:20:32,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111854896] [2020-10-05 22:20:32,980 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 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 [2020-10-05 22:20:33,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:33,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:33,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:33,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:34,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:34,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:34,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980247106] [2020-10-05 22:20:34,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:34,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:34,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:34,717 INFO L87 Difference]: Start difference. First operand 264 states and 687 transitions. Second operand 17 states. [2020-10-05 22:20:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:35,128 INFO L93 Difference]: Finished difference Result 351 states and 859 transitions. [2020-10-05 22:20:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:35,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:35,129 INFO L225 Difference]: With dead ends: 351 [2020-10-05 22:20:35,129 INFO L226 Difference]: Without dead ends: 346 [2020-10-05 22:20:35,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-05 22:20:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-05 22:20:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-05 22:20:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 700 transitions. [2020-10-05 22:20:35,134 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 700 transitions. Word has length 14 [2020-10-05 22:20:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:35,134 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 700 transitions. [2020-10-05 22:20:35,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 700 transitions. [2020-10-05 22:20:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:35,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:35,135 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:35,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:35,337 INFO L427 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:35,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-05 22:20:35,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:35,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101015249] [2020-10-05 22:20:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:35,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101015249] [2020-10-05 22:20:35,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52777993] [2020-10-05 22:20:35,461 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 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 [2020-10-05 22:20:35,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:35,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:35,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:35,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:35,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:35,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:35,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835212445] [2020-10-05 22:20:35,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:35,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:35,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:35,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:35,658 INFO L87 Difference]: Start difference. First operand 269 states and 700 transitions. Second operand 17 states. [2020-10-05 22:20:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:35,985 INFO L93 Difference]: Finished difference Result 357 states and 870 transitions. [2020-10-05 22:20:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:35,986 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:35,987 INFO L225 Difference]: With dead ends: 357 [2020-10-05 22:20:35,987 INFO L226 Difference]: Without dead ends: 339 [2020-10-05 22:20:35,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-05 22:20:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 269. [2020-10-05 22:20:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-05 22:20:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 696 transitions. [2020-10-05 22:20:35,992 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 696 transitions. Word has length 14 [2020-10-05 22:20:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:35,992 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 696 transitions. [2020-10-05 22:20:35,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 696 transitions. [2020-10-05 22:20:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:35,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:35,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:36,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:36,193 INFO L427 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:36,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-05 22:20:36,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:36,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058894731] [2020-10-05 22:20:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:36,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058894731] [2020-10-05 22:20:36,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153237691] [2020-10-05 22:20:36,333 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 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 [2020-10-05 22:20:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:36,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:36,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:36,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:36,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:36,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198081496] [2020-10-05 22:20:36,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:36,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:36,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:36,580 INFO L87 Difference]: Start difference. First operand 269 states and 696 transitions. Second operand 17 states. [2020-10-05 22:20:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:36,894 INFO L93 Difference]: Finished difference Result 332 states and 820 transitions. [2020-10-05 22:20:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:20:36,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:36,895 INFO L225 Difference]: With dead ends: 332 [2020-10-05 22:20:36,895 INFO L226 Difference]: Without dead ends: 327 [2020-10-05 22:20:36,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:36,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-05 22:20:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 266. [2020-10-05 22:20:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 22:20:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 689 transitions. [2020-10-05 22:20:36,901 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 689 transitions. Word has length 14 [2020-10-05 22:20:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:36,901 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 689 transitions. [2020-10-05 22:20:36,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 689 transitions. [2020-10-05 22:20:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:36,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:36,901 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:37,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-05 22:20:37,102 INFO L427 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:37,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-05 22:20:37,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:37,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336082623] [2020-10-05 22:20:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:37,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336082623] [2020-10-05 22:20:37,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340416363] [2020-10-05 22:20:37,266 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 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 [2020-10-05 22:20:37,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:37,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:37,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:37,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:37,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:37,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926727036] [2020-10-05 22:20:37,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:37,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:37,498 INFO L87 Difference]: Start difference. First operand 266 states and 689 transitions. Second operand 17 states. [2020-10-05 22:20:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:37,688 INFO L93 Difference]: Finished difference Result 322 states and 792 transitions. [2020-10-05 22:20:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:20:37,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:37,690 INFO L225 Difference]: With dead ends: 322 [2020-10-05 22:20:37,690 INFO L226 Difference]: Without dead ends: 309 [2020-10-05 22:20:37,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:20:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-05 22:20:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 268. [2020-10-05 22:20:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-05 22:20:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-05 22:20:37,695 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-05 22:20:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:37,695 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-05 22:20:37,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-05 22:20:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:37,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:37,696 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:37,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-05 22:20:37,897 INFO L427 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-05 22:20:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:37,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795935406] [2020-10-05 22:20:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:38,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795935406] [2020-10-05 22:20:38,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220585253] [2020-10-05 22:20:38,077 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 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 [2020-10-05 22:20:38,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:38,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:38,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:38,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:38,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:38,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:38,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668069286] [2020-10-05 22:20:38,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:38,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:38,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:38,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:38,298 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-05 22:20:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:38,378 INFO L93 Difference]: Finished difference Result 305 states and 753 transitions. [2020-10-05 22:20:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:20:38,379 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:38,380 INFO L225 Difference]: With dead ends: 305 [2020-10-05 22:20:38,380 INFO L226 Difference]: Without dead ends: 303 [2020-10-05 22:20:38,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:20:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-05 22:20:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2020-10-05 22:20:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-05 22:20:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 709 transitions. [2020-10-05 22:20:38,385 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 709 transitions. Word has length 14 [2020-10-05 22:20:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:38,385 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 709 transitions. [2020-10-05 22:20:38,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 709 transitions. [2020-10-05 22:20:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:38,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:38,386 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:38,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-05 22:20:38,594 INFO L427 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-05 22:20:38,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:38,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654304498] [2020-10-05 22:20:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:38,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654304498] [2020-10-05 22:20:38,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790172478] [2020-10-05 22:20:38,753 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 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 [2020-10-05 22:20:38,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:38,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:38,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:38,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:38,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:38,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:38,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6166578] [2020-10-05 22:20:38,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:38,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:38,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:38,970 INFO L87 Difference]: Start difference. First operand 274 states and 709 transitions. Second operand 17 states. [2020-10-05 22:20:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:39,237 INFO L93 Difference]: Finished difference Result 325 states and 802 transitions. [2020-10-05 22:20:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:39,238 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:39,239 INFO L225 Difference]: With dead ends: 325 [2020-10-05 22:20:39,239 INFO L226 Difference]: Without dead ends: 322 [2020-10-05 22:20:39,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:20:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-05 22:20:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 272. [2020-10-05 22:20:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-05 22:20:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-05 22:20:39,244 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-05 22:20:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:39,244 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-05 22:20:39,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-05 22:20:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:39,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:39,244 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:39,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-05 22:20:39,445 INFO L427 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-05 22:20:39,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:39,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274903076] [2020-10-05 22:20:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:39,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274903076] [2020-10-05 22:20:39,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739769657] [2020-10-05 22:20:39,599 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 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 [2020-10-05 22:20:39,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:39,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:39,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:40,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:40,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:40,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628893179] [2020-10-05 22:20:40,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:40,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:40,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:40,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:40,551 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-05 22:20:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:40,885 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-05 22:20:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:40,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:40,887 INFO L225 Difference]: With dead ends: 348 [2020-10-05 22:20:40,887 INFO L226 Difference]: Without dead ends: 344 [2020-10-05 22:20:40,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:20:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-05 22:20:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-05 22:20:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-05 22:20:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 697 transitions. [2020-10-05 22:20:40,892 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 697 transitions. Word has length 14 [2020-10-05 22:20:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:40,892 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 697 transitions. [2020-10-05 22:20:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 697 transitions. [2020-10-05 22:20:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:40,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:40,892 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:41,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:41,093 INFO L427 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-05 22:20:41,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:41,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938541762] [2020-10-05 22:20:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:41,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938541762] [2020-10-05 22:20:41,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573442102] [2020-10-05 22:20:41,221 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 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 [2020-10-05 22:20:41,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:41,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:41,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:43,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:43,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:43,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832951056] [2020-10-05 22:20:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:43,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:43,857 INFO L87 Difference]: Start difference. First operand 270 states and 697 transitions. Second operand 17 states. [2020-10-05 22:20:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:44,280 INFO L93 Difference]: Finished difference Result 338 states and 827 transitions. [2020-10-05 22:20:44,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:20:44,281 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:44,282 INFO L225 Difference]: With dead ends: 338 [2020-10-05 22:20:44,282 INFO L226 Difference]: Without dead ends: 335 [2020-10-05 22:20:44,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:20:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-05 22:20:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-10-05 22:20:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-05 22:20:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-05 22:20:44,287 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-05 22:20:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:44,287 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-05 22:20:44,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-05 22:20:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:44,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:44,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:44,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:44,488 INFO L427 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-05 22:20:44,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:44,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897540432] [2020-10-05 22:20:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:44,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897540432] [2020-10-05 22:20:44,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118967135] [2020-10-05 22:20:44,627 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 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 [2020-10-05 22:20:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:44,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:44,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:49,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:49,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:49,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176186962] [2020-10-05 22:20:49,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:49,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:20:49,024 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-05 22:20:53,257 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 22:20:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:53,589 INFO L93 Difference]: Finished difference Result 369 states and 902 transitions. [2020-10-05 22:20:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:20:53,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:53,590 INFO L225 Difference]: With dead ends: 369 [2020-10-05 22:20:53,590 INFO L226 Difference]: Without dead ends: 364 [2020-10-05 22:20:53,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-05 22:20:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-05 22:20:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 272. [2020-10-05 22:20:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-05 22:20:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-05 22:20:53,596 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-05 22:20:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:53,597 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-05 22:20:53,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-05 22:20:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:53,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:53,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:53,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-05 22:20:53,809 INFO L427 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:53,810 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times [2020-10-05 22:20:53,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:53,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663023166] [2020-10-05 22:20:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:53,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663023166] [2020-10-05 22:20:53,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077483466] [2020-10-05 22:20:53,940 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 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 [2020-10-05 22:20:53,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:53,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:53,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:53,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:54,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:54,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:54,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237820024] [2020-10-05 22:20:54,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:54,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:54,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:54,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:54,241 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-05 22:20:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:54,688 INFO L93 Difference]: Finished difference Result 352 states and 862 transitions. [2020-10-05 22:20:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:20:54,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:54,690 INFO L225 Difference]: With dead ends: 352 [2020-10-05 22:20:54,690 INFO L226 Difference]: Without dead ends: 348 [2020-10-05 22:20:54,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:20:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-05 22:20:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 268. [2020-10-05 22:20:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-05 22:20:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-05 22:20:54,695 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-05 22:20:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:54,695 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-05 22:20:54,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-05 22:20:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:54,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:54,696 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:54,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:54,897 INFO L427 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:54,897 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times [2020-10-05 22:20:54,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:54,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803625156] [2020-10-05 22:20:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:55,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803625156] [2020-10-05 22:20:55,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761862643] [2020-10-05 22:20:55,017 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 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 [2020-10-05 22:20:55,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:55,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:55,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:55,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:55,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:55,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075723631] [2020-10-05 22:20:55,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:55,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:55,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:55,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:55,241 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-05 22:20:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:55,696 INFO L93 Difference]: Finished difference Result 330 states and 806 transitions. [2020-10-05 22:20:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:55,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:55,698 INFO L225 Difference]: With dead ends: 330 [2020-10-05 22:20:55,698 INFO L226 Difference]: Without dead ends: 327 [2020-10-05 22:20:55,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-05 22:20:55,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-05 22:20:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 271. [2020-10-05 22:20:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-05 22:20:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-05 22:20:55,704 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-05 22:20:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:55,704 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-05 22:20:55,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-05 22:20:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:55,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:55,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:55,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:55,905 INFO L427 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:55,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:55,906 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times [2020-10-05 22:20:55,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:55,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295066750] [2020-10-05 22:20:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295066750] [2020-10-05 22:20:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541671403] [2020-10-05 22:20:56,032 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 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 [2020-10-05 22:20:56,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:56,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:56,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:56,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:56,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:56,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:56,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381929725] [2020-10-05 22:20:56,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:56,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:56,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:56,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:56,253 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-05 22:20:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:56,721 INFO L93 Difference]: Finished difference Result 365 states and 887 transitions. [2020-10-05 22:20:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:20:56,721 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:56,722 INFO L225 Difference]: With dead ends: 365 [2020-10-05 22:20:56,722 INFO L226 Difference]: Without dead ends: 360 [2020-10-05 22:20:56,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-05 22:20:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-05 22:20:56,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2020-10-05 22:20:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-05 22:20:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-05 22:20:56,726 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-05 22:20:56,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:56,726 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-05 22:20:56,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-05 22:20:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:56,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:56,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:56,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:56,928 INFO L427 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:56,928 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times [2020-10-05 22:20:56,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:56,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107013258] [2020-10-05 22:20:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107013258] [2020-10-05 22:20:57,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370218691] [2020-10-05 22:20:57,045 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 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 [2020-10-05 22:20:57,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:57,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:57,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:57,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:57,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:57,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21033396] [2020-10-05 22:20:57,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:57,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:57,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:57,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:57,257 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-05 22:20:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:57,659 INFO L93 Difference]: Finished difference Result 363 states and 882 transitions. [2020-10-05 22:20:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:57,660 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:57,660 INFO L225 Difference]: With dead ends: 363 [2020-10-05 22:20:57,661 INFO L226 Difference]: Without dead ends: 358 [2020-10-05 22:20:57,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:20:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-05 22:20:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 271. [2020-10-05 22:20:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-05 22:20:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-05 22:20:57,665 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-05 22:20:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:57,665 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-05 22:20:57,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-05 22:20:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:57,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:57,666 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:57,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-05 22:20:57,868 INFO L427 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times [2020-10-05 22:20:57,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:57,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511694068] [2020-10-05 22:20:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511694068] [2020-10-05 22:20:57,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280096025] [2020-10-05 22:20:57,984 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 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 [2020-10-05 22:20:58,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:58,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:58,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:58,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:58,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:58,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:58,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530489683] [2020-10-05 22:20:58,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:58,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:58,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:58,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:58,206 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-05 22:20:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:58,540 INFO L93 Difference]: Finished difference Result 333 states and 812 transitions. [2020-10-05 22:20:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:20:58,541 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:58,542 INFO L225 Difference]: With dead ends: 333 [2020-10-05 22:20:58,542 INFO L226 Difference]: Without dead ends: 315 [2020-10-05 22:20:58,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-05 22:20:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2020-10-05 22:20:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 22:20:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-05 22:20:58,546 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-05 22:20:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:58,546 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-05 22:20:58,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-05 22:20:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:58,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:58,547 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:58,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-05 22:20:58,748 INFO L427 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times [2020-10-05 22:20:58,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:58,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553252512] [2020-10-05 22:20:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:58,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553252512] [2020-10-05 22:20:58,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445235937] [2020-10-05 22:20:58,927 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 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 [2020-10-05 22:20:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:58,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:59,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:59,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:59,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198262359] [2020-10-05 22:20:59,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:59,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:59,157 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-05 22:20:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:59,317 INFO L93 Difference]: Finished difference Result 296 states and 732 transitions. [2020-10-05 22:20:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:20:59,319 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:20:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:59,319 INFO L225 Difference]: With dead ends: 296 [2020-10-05 22:20:59,319 INFO L226 Difference]: Without dead ends: 294 [2020-10-05 22:20:59,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:20:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-05 22:20:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2020-10-05 22:20:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-05 22:20:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 695 transitions. [2020-10-05 22:20:59,325 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 695 transitions. Word has length 14 [2020-10-05 22:20:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:59,325 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 695 transitions. [2020-10-05 22:20:59,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:20:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 695 transitions. [2020-10-05 22:20:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:20:59,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:59,326 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:59,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-05 22:20:59,538 INFO L427 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times [2020-10-05 22:20:59,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:59,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391852221] [2020-10-05 22:20:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:59,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391852221] [2020-10-05 22:20:59,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060819102] [2020-10-05 22:20:59,689 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 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 [2020-10-05 22:20:59,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:59,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:59,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:20:59,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:59,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:59,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:20:59,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260319420] [2020-10-05 22:20:59,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:20:59,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:59,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:20:59,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:20:59,915 INFO L87 Difference]: Start difference. First operand 270 states and 695 transitions. Second operand 17 states. [2020-10-05 22:21:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:00,203 INFO L93 Difference]: Finished difference Result 328 states and 803 transitions. [2020-10-05 22:21:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:00,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:00,205 INFO L225 Difference]: With dead ends: 328 [2020-10-05 22:21:00,205 INFO L226 Difference]: Without dead ends: 325 [2020-10-05 22:21:00,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-05 22:21:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 268. [2020-10-05 22:21:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-05 22:21:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-05 22:21:00,209 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-05 22:21:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:00,209 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-05 22:21:00,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-05 22:21:00,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:00,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:00,210 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:00,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-05 22:21:00,411 INFO L427 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times [2020-10-05 22:21:00,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:00,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036812126] [2020-10-05 22:21:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:00,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036812126] [2020-10-05 22:21:00,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724844297] [2020-10-05 22:21:00,541 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 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 [2020-10-05 22:21:00,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:00,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:00,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:00,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:00,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:00,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:00,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520119653] [2020-10-05 22:21:00,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:00,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:00,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:00,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:00,838 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-05 22:21:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:01,227 INFO L93 Difference]: Finished difference Result 344 states and 841 transitions. [2020-10-05 22:21:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:01,228 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:01,229 INFO L225 Difference]: With dead ends: 344 [2020-10-05 22:21:01,229 INFO L226 Difference]: Without dead ends: 340 [2020-10-05 22:21:01,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:21:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-05 22:21:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2020-10-05 22:21:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 22:21:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-05 22:21:01,235 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-05 22:21:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:01,235 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-05 22:21:01,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-05 22:21:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:01,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:01,236 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:01,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-05 22:21:01,447 INFO L427 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times [2020-10-05 22:21:01,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:01,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621762673] [2020-10-05 22:21:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:01,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621762673] [2020-10-05 22:21:01,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220623655] [2020-10-05 22:21:01,556 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 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 [2020-10-05 22:21:01,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:01,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:01,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:03,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:03,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:03,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698897245] [2020-10-05 22:21:03,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:03,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:03,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:03,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:03,902 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-05 22:21:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:04,361 INFO L93 Difference]: Finished difference Result 331 states and 805 transitions. [2020-10-05 22:21:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:21:04,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:04,362 INFO L225 Difference]: With dead ends: 331 [2020-10-05 22:21:04,362 INFO L226 Difference]: Without dead ends: 328 [2020-10-05 22:21:04,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:21:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-05 22:21:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 268. [2020-10-05 22:21:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-05 22:21:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-05 22:21:04,366 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-05 22:21:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:04,366 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-05 22:21:04,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-05 22:21:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:04,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:04,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:04,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-05 22:21:04,577 INFO L427 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times [2020-10-05 22:21:04,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:04,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248758525] [2020-10-05 22:21:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:04,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248758525] [2020-10-05 22:21:04,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5376652] [2020-10-05 22:21:04,697 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 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 [2020-10-05 22:21:04,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:04,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:04,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:09,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:09,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:09,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126256459] [2020-10-05 22:21:09,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:09,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:21:09,073 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-05 22:21:13,358 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 22:21:13,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:13,708 INFO L93 Difference]: Finished difference Result 357 states and 866 transitions. [2020-10-05 22:21:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:21:13,709 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:13,710 INFO L225 Difference]: With dead ends: 357 [2020-10-05 22:21:13,710 INFO L226 Difference]: Without dead ends: 352 [2020-10-05 22:21:13,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-05 22:21:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-05 22:21:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2020-10-05 22:21:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-05 22:21:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-05 22:21:13,715 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-05 22:21:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:13,715 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-05 22:21:13,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-05 22:21:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:13,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:13,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:13,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:13,916 INFO L427 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:13,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 144 times [2020-10-05 22:21:13,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:13,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093157223] [2020-10-05 22:21:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:14,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093157223] [2020-10-05 22:21:14,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172236686] [2020-10-05 22:21:14,034 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 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 [2020-10-05 22:21:14,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:14,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:14,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:14,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:14,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:14,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:14,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255519228] [2020-10-05 22:21:14,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:14,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:14,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:14,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:14,353 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-05 22:21:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:14,840 INFO L93 Difference]: Finished difference Result 339 states and 826 transitions. [2020-10-05 22:21:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:21:14,841 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:14,841 INFO L225 Difference]: With dead ends: 339 [2020-10-05 22:21:14,841 INFO L226 Difference]: Without dead ends: 335 [2020-10-05 22:21:14,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:21:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-05 22:21:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 264. [2020-10-05 22:21:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-05 22:21:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-05 22:21:14,846 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-05 22:21:14,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:14,846 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-05 22:21:14,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-05 22:21:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:14,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:14,847 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:15,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:15,047 INFO L427 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 145 times [2020-10-05 22:21:15,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:15,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923589010] [2020-10-05 22:21:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923589010] [2020-10-05 22:21:15,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171150244] [2020-10-05 22:21:15,204 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 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 [2020-10-05 22:21:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:15,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:15,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:15,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:15,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939584535] [2020-10-05 22:21:15,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:15,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:15,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:15,418 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-05 22:21:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:15,552 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2020-10-05 22:21:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:15,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:15,553 INFO L225 Difference]: With dead ends: 287 [2020-10-05 22:21:15,553 INFO L226 Difference]: Without dead ends: 285 [2020-10-05 22:21:15,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:21:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-05 22:21:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 266. [2020-10-05 22:21:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-05 22:21:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-05 22:21:15,558 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-05 22:21:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:15,558 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-05 22:21:15,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-05 22:21:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:15,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:15,559 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:15,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:15,760 INFO L427 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 146 times [2020-10-05 22:21:15,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:15,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614424986] [2020-10-05 22:21:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614424986] [2020-10-05 22:21:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943568536] [2020-10-05 22:21:15,897 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 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 [2020-10-05 22:21:15,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:15,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:15,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:15,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:16,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:16,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:16,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840358250] [2020-10-05 22:21:16,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:16,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:16,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:16,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:16,117 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-05 22:21:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:16,443 INFO L93 Difference]: Finished difference Result 317 states and 778 transitions. [2020-10-05 22:21:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:21:16,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:16,445 INFO L225 Difference]: With dead ends: 317 [2020-10-05 22:21:16,445 INFO L226 Difference]: Without dead ends: 314 [2020-10-05 22:21:16,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:21:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-05 22:21:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2020-10-05 22:21:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-05 22:21:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-05 22:21:16,449 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-05 22:21:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:16,449 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-05 22:21:16,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-05 22:21:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:16,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:16,450 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:16,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:16,651 INFO L427 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash -792188803, now seen corresponding path program 147 times [2020-10-05 22:21:16,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:16,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971095795] [2020-10-05 22:21:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:16,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971095795] [2020-10-05 22:21:16,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242434095] [2020-10-05 22:21:16,756 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 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 [2020-10-05 22:21:16,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:16,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:16,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:17,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:17,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:17,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888469970] [2020-10-05 22:21:17,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:17,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:17,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:17,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:17,050 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-05 22:21:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:17,452 INFO L93 Difference]: Finished difference Result 330 states and 807 transitions. [2020-10-05 22:21:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:21:17,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:17,454 INFO L225 Difference]: With dead ends: 330 [2020-10-05 22:21:17,455 INFO L226 Difference]: Without dead ends: 326 [2020-10-05 22:21:17,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:21:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-05 22:21:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 262. [2020-10-05 22:21:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-05 22:21:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-05 22:21:17,459 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-05 22:21:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:17,459 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-05 22:21:17,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-05 22:21:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:17,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:17,460 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:17,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:17,661 INFO L427 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:17,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:17,661 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 148 times [2020-10-05 22:21:17,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:17,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091642100] [2020-10-05 22:21:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:17,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091642100] [2020-10-05 22:21:17,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434515685] [2020-10-05 22:21:17,792 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 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 [2020-10-05 22:21:17,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:17,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:17,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:17,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:18,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:18,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:18,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471857583] [2020-10-05 22:21:18,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:18,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:18,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:18,015 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-05 22:21:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:18,204 INFO L93 Difference]: Finished difference Result 278 states and 694 transitions. [2020-10-05 22:21:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:21:18,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:18,206 INFO L225 Difference]: With dead ends: 278 [2020-10-05 22:21:18,207 INFO L226 Difference]: Without dead ends: 276 [2020-10-05 22:21:18,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:21:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-05 22:21:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2020-10-05 22:21:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-05 22:21:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-05 22:21:18,211 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-05 22:21:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:18,211 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-05 22:21:18,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-05 22:21:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:18,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:18,212 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:18,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:18,413 INFO L427 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:18,413 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 149 times [2020-10-05 22:21:18,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:18,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769019159] [2020-10-05 22:21:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:18,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769019159] [2020-10-05 22:21:18,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916658099] [2020-10-05 22:21:18,533 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 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 [2020-10-05 22:21:18,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:18,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:18,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:18,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:18,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:18,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:18,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233023002] [2020-10-05 22:21:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:18,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:18,769 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-05 22:21:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:19,151 INFO L93 Difference]: Finished difference Result 306 states and 753 transitions. [2020-10-05 22:21:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:21:19,152 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:19,152 INFO L225 Difference]: With dead ends: 306 [2020-10-05 22:21:19,152 INFO L226 Difference]: Without dead ends: 303 [2020-10-05 22:21:19,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:21:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-05 22:21:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2020-10-05 22:21:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-05 22:21:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 665 transitions. [2020-10-05 22:21:19,157 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 665 transitions. Word has length 14 [2020-10-05 22:21:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:19,157 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 665 transitions. [2020-10-05 22:21:19,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 665 transitions. [2020-10-05 22:21:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:19,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:19,157 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:19,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-05 22:21:19,358 INFO L427 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:19,359 INFO L82 PathProgramCache]: Analyzing trace with hash -770999714, now seen corresponding path program 150 times [2020-10-05 22:21:19,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:19,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506855819] [2020-10-05 22:21:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:19,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506855819] [2020-10-05 22:21:19,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825211034] [2020-10-05 22:21:19,472 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 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 [2020-10-05 22:21:19,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:19,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-05 22:21:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:19,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:19,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-05 22:21:19,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606599543] [2020-10-05 22:21:19,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:21:19,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:19,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:21:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:21:19,546 INFO L87 Difference]: Start difference. First operand 260 states and 665 transitions. Second operand 11 states. [2020-10-05 22:21:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:19,722 INFO L93 Difference]: Finished difference Result 269 states and 677 transitions. [2020-10-05 22:21:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:21:19,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-05 22:21:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:19,724 INFO L225 Difference]: With dead ends: 269 [2020-10-05 22:21:19,724 INFO L226 Difference]: Without dead ends: 267 [2020-10-05 22:21:19,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:21:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-05 22:21:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2020-10-05 22:21:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-05 22:21:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 659 transitions. [2020-10-05 22:21:19,728 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 659 transitions. Word has length 14 [2020-10-05 22:21:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:19,734 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 659 transitions. [2020-10-05 22:21:19,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:21:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 659 transitions. [2020-10-05 22:21:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:19,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:19,734 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:19,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:19,935 INFO L427 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash -770977394, now seen corresponding path program 151 times [2020-10-05 22:21:19,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:19,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081081274] [2020-10-05 22:21:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:20,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081081274] [2020-10-05 22:21:20,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406058824] [2020-10-05 22:21:20,047 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 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 [2020-10-05 22:21:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:20,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:20,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:20,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:21:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:20,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:20,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:20,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026478435] [2020-10-05 22:21:20,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:20,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:20,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:20,296 INFO L87 Difference]: Start difference. First operand 256 states and 659 transitions. Second operand 17 states. [2020-10-05 22:21:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:20,799 INFO L93 Difference]: Finished difference Result 298 states and 754 transitions. [2020-10-05 22:21:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:20,800 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:20,800 INFO L225 Difference]: With dead ends: 298 [2020-10-05 22:21:20,800 INFO L226 Difference]: Without dead ends: 294 [2020-10-05 22:21:20,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-05 22:21:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-05 22:21:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2020-10-05 22:21:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-05 22:21:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 662 transitions. [2020-10-05 22:21:20,805 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 662 transitions. Word has length 14 [2020-10-05 22:21:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:20,805 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 662 transitions. [2020-10-05 22:21:20,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 662 transitions. [2020-10-05 22:21:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:20,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:20,806 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:21,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-05 22:21:21,007 INFO L427 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash -770969923, now seen corresponding path program 152 times [2020-10-05 22:21:21,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:21,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229474432] [2020-10-05 22:21:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:21,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229474432] [2020-10-05 22:21:21,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592749926] [2020-10-05 22:21:21,107 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 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 [2020-10-05 22:21:21,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:21,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:21,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:21,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:21,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:21,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175672426] [2020-10-05 22:21:21,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:21,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:21,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:21,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:21,362 INFO L87 Difference]: Start difference. First operand 257 states and 662 transitions. Second operand 17 states. [2020-10-05 22:21:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:21,878 INFO L93 Difference]: Finished difference Result 313 states and 786 transitions. [2020-10-05 22:21:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:21,879 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:21,879 INFO L225 Difference]: With dead ends: 313 [2020-10-05 22:21:21,880 INFO L226 Difference]: Without dead ends: 310 [2020-10-05 22:21:21,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:21:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-05 22:21:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2020-10-05 22:21:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 22:21:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 669 transitions. [2020-10-05 22:21:21,884 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 669 transitions. Word has length 14 [2020-10-05 22:21:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:21,885 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 669 transitions. [2020-10-05 22:21:21,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 669 transitions. [2020-10-05 22:21:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:21,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:21,886 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:22,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:22,086 INFO L427 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash -770948564, now seen corresponding path program 153 times [2020-10-05 22:21:22,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:22,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628778254] [2020-10-05 22:21:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:22,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628778254] [2020-10-05 22:21:22,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555927302] [2020-10-05 22:21:22,192 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 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 [2020-10-05 22:21:22,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:22,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:22,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:22,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:22,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:22,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:22,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:22,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701105334] [2020-10-05 22:21:22,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:22,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:22,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:22,432 INFO L87 Difference]: Start difference. First operand 259 states and 669 transitions. Second operand 17 states. [2020-10-05 22:21:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:23,045 INFO L93 Difference]: Finished difference Result 314 states and 795 transitions. [2020-10-05 22:21:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:21:23,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:23,047 INFO L225 Difference]: With dead ends: 314 [2020-10-05 22:21:23,047 INFO L226 Difference]: Without dead ends: 309 [2020-10-05 22:21:23,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-05 22:21:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-05 22:21:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2020-10-05 22:21:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 22:21:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 668 transitions. [2020-10-05 22:21:23,051 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 668 transitions. Word has length 14 [2020-10-05 22:21:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:23,051 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 668 transitions. [2020-10-05 22:21:23,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 668 transitions. [2020-10-05 22:21:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:23,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:23,052 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:23,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:23,255 INFO L427 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -770947603, now seen corresponding path program 154 times [2020-10-05 22:21:23,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:23,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556043104] [2020-10-05 22:21:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:23,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556043104] [2020-10-05 22:21:23,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626865906] [2020-10-05 22:21:23,369 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 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 [2020-10-05 22:21:23,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:23,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:23,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:23,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:23,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:21:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:23,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:23,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:23,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051640068] [2020-10-05 22:21:23,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:23,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:23,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:23,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:23,663 INFO L87 Difference]: Start difference. First operand 259 states and 668 transitions. Second operand 17 states. [2020-10-05 22:21:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:24,299 INFO L93 Difference]: Finished difference Result 333 states and 837 transitions. [2020-10-05 22:21:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:24,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:24,301 INFO L225 Difference]: With dead ends: 333 [2020-10-05 22:21:24,301 INFO L226 Difference]: Without dead ends: 328 [2020-10-05 22:21:24,301 INFO L675 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 [2020-10-05 22:21:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-05 22:21:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2020-10-05 22:21:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-05 22:21:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 671 transitions. [2020-10-05 22:21:24,305 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 671 transitions. Word has length 14 [2020-10-05 22:21:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:24,306 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 671 transitions. [2020-10-05 22:21:24,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 671 transitions. [2020-10-05 22:21:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:24,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:24,306 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:24,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-05 22:21:24,518 INFO L427 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:24,518 INFO L82 PathProgramCache]: Analyzing trace with hash -770739283, now seen corresponding path program 155 times [2020-10-05 22:21:24,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:24,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814847516] [2020-10-05 22:21:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:24,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814847516] [2020-10-05 22:21:24,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214459719] [2020-10-05 22:21:24,626 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 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 [2020-10-05 22:21:24,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:24,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:24,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:24,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:24,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:24,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:24,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554056676] [2020-10-05 22:21:24,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:24,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:24,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:24,928 INFO L87 Difference]: Start difference. First operand 259 states and 671 transitions. Second operand 17 states. [2020-10-05 22:21:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:25,453 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-05 22:21:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:25,454 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:25,456 INFO L225 Difference]: With dead ends: 350 [2020-10-05 22:21:25,456 INFO L226 Difference]: Without dead ends: 346 [2020-10-05 22:21:25,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:21:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-05 22:21:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 261. [2020-10-05 22:21:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-05 22:21:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 678 transitions. [2020-10-05 22:21:25,460 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 678 transitions. Word has length 14 [2020-10-05 22:21:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:25,460 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 678 transitions. [2020-10-05 22:21:25,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 678 transitions. [2020-10-05 22:21:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:25,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:25,461 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:25,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:25,662 INFO L427 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 156 times [2020-10-05 22:21:25,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:25,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350567362] [2020-10-05 22:21:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350567362] [2020-10-05 22:21:25,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530890665] [2020-10-05 22:21:25,774 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 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 [2020-10-05 22:21:25,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:25,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:25,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:26,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:26,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:26,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91265911] [2020-10-05 22:21:26,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:26,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:26,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:26,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:26,050 INFO L87 Difference]: Start difference. First operand 261 states and 678 transitions. Second operand 17 states. [2020-10-05 22:21:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:26,742 INFO L93 Difference]: Finished difference Result 362 states and 911 transitions. [2020-10-05 22:21:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:21:26,743 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:26,744 INFO L225 Difference]: With dead ends: 362 [2020-10-05 22:21:26,745 INFO L226 Difference]: Without dead ends: 358 [2020-10-05 22:21:26,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-05 22:21:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-05 22:21:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 265. [2020-10-05 22:21:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-05 22:21:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 692 transitions. [2020-10-05 22:21:26,749 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 692 transitions. Word has length 14 [2020-10-05 22:21:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:26,749 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 692 transitions. [2020-10-05 22:21:26,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 692 transitions. [2020-10-05 22:21:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:26,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:26,750 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:26,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:26,951 INFO L427 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:26,951 INFO L82 PathProgramCache]: Analyzing trace with hash -770054834, now seen corresponding path program 157 times [2020-10-05 22:21:26,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:26,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454806083] [2020-10-05 22:21:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:27,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454806083] [2020-10-05 22:21:27,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124755775] [2020-10-05 22:21:27,072 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 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 [2020-10-05 22:21:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:27,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:27,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:27,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:27,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:27,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:27,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642491569] [2020-10-05 22:21:27,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:27,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:27,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:27,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:27,368 INFO L87 Difference]: Start difference. First operand 265 states and 692 transitions. Second operand 17 states. [2020-10-05 22:21:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:28,255 INFO L93 Difference]: Finished difference Result 322 states and 822 transitions. [2020-10-05 22:21:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:21:28,256 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:28,257 INFO L225 Difference]: With dead ends: 322 [2020-10-05 22:21:28,257 INFO L226 Difference]: Without dead ends: 316 [2020-10-05 22:21:28,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 22:21:28,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-05 22:21:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 265. [2020-10-05 22:21:28,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-05 22:21:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-05 22:21:28,261 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-05 22:21:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:28,261 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-05 22:21:28,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-05 22:21:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:28,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:28,262 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:28,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:28,463 INFO L427 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash -770053873, now seen corresponding path program 158 times [2020-10-05 22:21:28,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:28,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096729139] [2020-10-05 22:21:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:28,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096729139] [2020-10-05 22:21:28,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270471107] [2020-10-05 22:21:28,584 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 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 [2020-10-05 22:21:28,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:28,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:28,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:30,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:30,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:30,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:30,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220086923] [2020-10-05 22:21:30,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:30,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:30,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:30,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:21:30,932 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-05 22:21:35,244 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-05 22:21:37,402 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-05 22:21:41,562 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-05 22:21:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:42,757 INFO L93 Difference]: Finished difference Result 395 states and 997 transitions. [2020-10-05 22:21:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:21:42,758 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:42,759 INFO L225 Difference]: With dead ends: 395 [2020-10-05 22:21:42,759 INFO L226 Difference]: Without dead ends: 386 [2020-10-05 22:21:42,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-05 22:21:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-05 22:21:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 262. [2020-10-05 22:21:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-05 22:21:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-05 22:21:42,765 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-05 22:21:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:42,765 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-05 22:21:42,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-05 22:21:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:42,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:42,765 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:42,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:42,966 INFO L427 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash -770025043, now seen corresponding path program 159 times [2020-10-05 22:21:42,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:42,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492366591] [2020-10-05 22:21:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:43,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492366591] [2020-10-05 22:21:43,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385256496] [2020-10-05 22:21:43,090 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 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 [2020-10-05 22:21:43,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:43,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:43,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:43,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:43,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:43,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935994693] [2020-10-05 22:21:43,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:43,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:43,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:43,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:43,427 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-05 22:21:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:44,339 INFO L93 Difference]: Finished difference Result 358 states and 909 transitions. [2020-10-05 22:21:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:21:44,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:44,341 INFO L225 Difference]: With dead ends: 358 [2020-10-05 22:21:44,341 INFO L226 Difference]: Without dead ends: 353 [2020-10-05 22:21:44,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=338, Invalid=718, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 22:21:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-05 22:21:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 262. [2020-10-05 22:21:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-05 22:21:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-05 22:21:44,346 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-05 22:21:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:44,346 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-05 22:21:44,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-05 22:21:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:44,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:44,347 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:44,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:44,547 INFO L427 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:44,548 INFO L82 PathProgramCache]: Analyzing trace with hash -763589443, now seen corresponding path program 160 times [2020-10-05 22:21:44,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:44,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869644738] [2020-10-05 22:21:44,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:44,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869644738] [2020-10-05 22:21:44,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924230658] [2020-10-05 22:21:44,656 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 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 [2020-10-05 22:21:44,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:44,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:44,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:44,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2020-10-05 22:21:45,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:45,112 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 22:21:45,117 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 22:21:45,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:21:45 BasicIcfg [2020-10-05 22:21:45,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:21:45,119 INFO L168 Benchmark]: Toolchain (without parser) took 274669.85 ms. Allocated memory was 145.8 MB in the beginning and 213.4 MB in the end (delta: 67.6 MB). Free memory was 100.2 MB in the beginning and 108.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,120 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.50 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.2 MB in the beginning and 160.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 201.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,121 INFO L168 Benchmark]: Boogie Preprocessor took 28.40 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 157.3 MB in the end (delta: 971.0 kB). Peak memory consumption was 971.0 kB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,121 INFO L168 Benchmark]: RCFGBuilder took 385.06 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 136.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,121 INFO L168 Benchmark]: TraceAbstraction took 273473.15 ms. Allocated memory was 201.9 MB in the beginning and 213.4 MB in the end (delta: 11.5 MB). Free memory was 135.8 MB in the beginning and 108.4 MB in the end (delta: 27.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:45,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.50 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.2 MB in the beginning and 160.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 201.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.40 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 157.3 MB in the end (delta: 971.0 kB). Peak memory consumption was 971.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 385.06 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 136.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 273473.15 ms. Allocated memory was 201.9 MB in the beginning and 213.4 MB in the end (delta: 11.5 MB). Free memory was 135.8 MB in the beginning and 108.4 MB in the end (delta: 27.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 59 ProgramPointsBefore, 20 ProgramPointsAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 553 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 879 CheckedPairsTotal, 48 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 273.3s, OverallIterations: 189, TraceHistogramMax: 6, AutomataDifference: 155.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 2496 SDtfs, 16704 SDslu, 16634 SDs, 0 SdLazy, 11829 SolverSat, 4261 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 56.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4743 GetRequests, 903 SyntacticMatches, 161 SemanticMatches, 3679 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19013 ImplicationChecksByTransitivity, 155.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 188 MinimizatonAttempts, 8906 StatesRemovedByMinimization, 187 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 67.3s InterpolantComputationTime, 4624 NumberOfCodeBlocks, 4622 NumberOfCodeBlocksAsserted, 569 NumberOfCheckSat, 4256 ConstructedInterpolants, 11 QuantifiedInterpolants, 445590 SizeOfPredicates, 178 NumberOfNonLiveVariables, 15677 ConjunctsInSsa, 1758 ConjunctsInUnsatCore, 368 InterpolantComputations, 10 PerfectInterpolantSequences, 30/1764 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