/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:25:59,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:25:59,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:25:59,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:25:59,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:25:59,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:25:59,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:25:59,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:25:59,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:25:59,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:25:59,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:25:59,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:25:59,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:25:59,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:25:59,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:25:59,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:25:59,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:25:59,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:25:59,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:25:59,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:25:59,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:25:59,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:25:59,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:25:59,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:25:59,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:25:59,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:25:59,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:25:59,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:25:59,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:25:59,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:25:59,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:25:59,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:25:59,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:25:59,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:25:59,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:25:59,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:25:59,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:25:59,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:25:59,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:25:59,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:25:59,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:25:59,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:25:59,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:25:59,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:25:59,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:25:59,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:25:59,364 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:25:59,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:25:59,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:25:59,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:25:59,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:25:59,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:25:59,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:25:59,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:25:59,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:25:59,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:25:59,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:25:59,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:25:59,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:25:59,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:25:59,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:25:59,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:25:59,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:25:59,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:25:59,369 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:25:59,369 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:25:59,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:25:59,369 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:25:59,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:25:59,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:25:59,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:25:59,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:25:59,678 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:25:59,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-16 12:25:59,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87d33d3d9/7011862851e640da9b139e5d6c981c6e/FLAGc591963ea [2020-10-16 12:26:00,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:26:00,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-16 12:26:00,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87d33d3d9/7011862851e640da9b139e5d6c981c6e/FLAGc591963ea [2020-10-16 12:26:00,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87d33d3d9/7011862851e640da9b139e5d6c981c6e [2020-10-16 12:26:00,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:26:00,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:26:00,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:00,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:26:00,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:26:00,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd2355d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:00, skipping insertion in model container [2020-10-16 12:26:00,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:26:00,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:26:01,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,132 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:26:01,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,291 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:26:01,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01 WrapperNode [2020-10-16 12:26:01,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:01,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:26:01,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:26:01,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:26:01,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:26:01,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:26:01,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:26:01,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:26:01,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 12:26:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 12:26:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 12:26:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:26:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:26:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:26:01,445 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:26:01,749 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:26:01,749 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 12:26:01,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01 BoogieIcfgContainer [2020-10-16 12:26:01,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:26:01,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:26:01,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:26:01,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:26:01,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:26:00" (1/3) ... [2020-10-16 12:26:01,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76054451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (2/3) ... [2020-10-16 12:26:01,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76054451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:01, skipping insertion in model container [2020-10-16 12:26:01,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:01" (3/3) ... [2020-10-16 12:26:01,763 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2020-10-16 12:26:01,778 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:26:01,778 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:26:01,790 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:26:01,791 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:26:01,823 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,824 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,824 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,825 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,825 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,825 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,826 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,826 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,826 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,827 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,827 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,827 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,828 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,828 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,828 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,829 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,830 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,831 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,831 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,832 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,832 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,832 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,833 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,833 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,833 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,834 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,837 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,838 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,838 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,838 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,839 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,839 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,847 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,847 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:01,850 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:26:01,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:26:01,889 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:26:01,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:26:01,889 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:26:01,890 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:26:01,890 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:26:01,890 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:26:01,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:26:01,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:26:01,905 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:26:01,906 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,909 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,911 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-16 12:26:01,956 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 12:26:01,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:26:01,962 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. [2020-10-16 12:26:01,966 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-16 12:26:03,083 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 12:26:03,185 INFO L132 LiptonReduction]: Checked pairs total: 1052 [2020-10-16 12:26:03,185 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 12:26:03,194 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-16 12:26:03,207 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:26:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:26:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:26:03,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1563716626, now seen corresponding path program 1 times [2020-10-16 12:26:03,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933604735] [2020-10-16 12:26:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933604735] [2020-10-16 12:26:03,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:26:03,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216487749] [2020-10-16 12:26:03,498 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,502 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,516 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-16 12:26:03,517 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,522 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:26:03,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:26:03,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:26:03,543 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-16 12:26:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,616 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-16 12:26:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:26:03,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-16 12:26:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,631 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:03,632 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:26:03,633 INFO L677 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 [2020-10-16 12:26:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:26:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-16 12:26:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:26:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-16 12:26:03,682 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-16 12:26:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,682 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-16 12:26:03,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:26:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-16 12:26:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:26:03,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash 956938306, now seen corresponding path program 1 times [2020-10-16 12:26:03,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894009252] [2020-10-16 12:26:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894009252] [2020-10-16 12:26:03,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [154591073] [2020-10-16 12:26:03,822 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,823 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,826 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-16 12:26:03,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:03,842 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:03,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:26:03,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:03,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:26:03,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:26:03,846 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-16 12:26:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:03,905 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-16 12:26:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:03,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 12:26:03,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:03,907 INFO L225 Difference]: With dead ends: 80 [2020-10-16 12:26:03,907 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:26:03,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:26:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-16 12:26:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:26:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-16 12:26:03,919 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-16 12:26:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:03,920 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-16 12:26:03,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:26:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-16 12:26:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:03,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:03,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:03,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:26:03,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash 507192011, now seen corresponding path program 1 times [2020-10-16 12:26:03,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:03,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599318706] [2020-10-16 12:26:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:03,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599318706] [2020-10-16 12:26:03,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:03,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:26:03,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [815945234] [2020-10-16 12:26:03,991 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:03,992 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:03,994 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-16 12:26:03,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,004 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:04,005 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:04,021 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [543#(and (< ~i~0 46368) (<= ~j~0 2))] [2020-10-16 12:26:04,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:04,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:04,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:04,022 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 6 states. [2020-10-16 12:26:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,068 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-10-16 12:26:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:04,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-16 12:26:04,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,070 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:26:04,070 INFO L226 Difference]: Without dead ends: 77 [2020-10-16 12:26:04,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:26:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-16 12:26:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-10-16 12:26:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:26:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-16 12:26:04,080 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-16 12:26:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,081 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-16 12:26:04,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-16 12:26:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,082 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:26:04,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash -399661872, now seen corresponding path program 2 times [2020-10-16 12:26:04,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524022574] [2020-10-16 12:26:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524022574] [2020-10-16 12:26:04,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875510840] [2020-10-16 12:26:04,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:04,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:04,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:04,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:04,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:04,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:04,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-16 12:26:04,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [181545381] [2020-10-16 12:26:04,396 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,397 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,399 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-10-16 12:26:04,399 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,417 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:04,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:26:04,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:26:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:26:04,418 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 6 states. [2020-10-16 12:26:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:04,483 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-16 12:26:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:04,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-16 12:26:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:04,485 INFO L225 Difference]: With dead ends: 101 [2020-10-16 12:26:04,485 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:26:04,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:26:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-16 12:26:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:26:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-16 12:26:04,495 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-16 12:26:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:04,495 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-16 12:26:04,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:26:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-16 12:26:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:04,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,497 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:04,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1456916488, now seen corresponding path program 2 times [2020-10-16 12:26:04,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057390216] [2020-10-16 12:26:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057390216] [2020-10-16 12:26:04,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57937552] [2020-10-16 12:26:04,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:04,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:04,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:04,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:26:04,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:04,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:04,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 12:26:04,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1826670245] [2020-10-16 12:26:04,991 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:04,992 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:04,993 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 12:26:04,993 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:04,997 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:04,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,015 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:05,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:05,038 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1077#(and (< ~i~0 46368) (<= ~j~0 3)), 1078#(and (<= (+ ~i~0 ~j~0) 3) (< ~i~0 46368))] [2020-10-16 12:26:05,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:05,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:05,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:05,039 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 8 states. [2020-10-16 12:26:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,126 INFO L93 Difference]: Finished difference Result 101 states and 239 transitions. [2020-10-16 12:26:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:05,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-16 12:26:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,128 INFO L225 Difference]: With dead ends: 101 [2020-10-16 12:26:05,129 INFO L226 Difference]: Without dead ends: 95 [2020-10-16 12:26:05,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-16 12:26:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-16 12:26:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:26:05,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-16 12:26:05,138 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 9 [2020-10-16 12:26:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,138 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-16 12:26:05,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-16 12:26:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,140 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:05,354 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash 495405570, now seen corresponding path program 3 times [2020-10-16 12:26:05,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896972853] [2020-10-16 12:26:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896972853] [2020-10-16 12:26:05,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105708573] [2020-10-16 12:26:05,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:05,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:05,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:05,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:05,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:05,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:05,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 12:26:05,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [689159047] [2020-10-16 12:26:05,593 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,594 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,596 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:05,596 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,617 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:05,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:05,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:05,618 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 7 states. [2020-10-16 12:26:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,700 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-16 12:26:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:05,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-16 12:26:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,702 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:26:05,702 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 12:26:05,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 12:26:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-16 12:26:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:26:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-16 12:26:05,712 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-16 12:26:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,712 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-16 12:26:05,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-16 12:26:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:26:05,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,714 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:05,928 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2080229483, now seen corresponding path program 3 times [2020-10-16 12:26:05,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047260389] [2020-10-16 12:26:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047260389] [2020-10-16 12:26:05,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156415905] [2020-10-16 12:26:05,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:06,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:06,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:06,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:06,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:06,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:06,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2002540444] [2020-10-16 12:26:06,165 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:06,166 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:06,168 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-10-16 12:26:06,168 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:06,169 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:06,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,192 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:06,192 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,250 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:06,251 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,273 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1733#(and (<= ~j~0 4) (< ~i~0 46368)), 1734#(and (<= (+ ~i~0 ~j~0) 4) (< ~i~0 46368)), 1735#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 4))] [2020-10-16 12:26:06,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:06,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:06,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:06,275 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 10 states. [2020-10-16 12:26:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:06,421 INFO L93 Difference]: Finished difference Result 127 states and 300 transitions. [2020-10-16 12:26:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:06,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-16 12:26:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:06,423 INFO L225 Difference]: With dead ends: 127 [2020-10-16 12:26:06,423 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 12:26:06,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 12:26:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 94. [2020-10-16 12:26:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 12:26:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-16 12:26:06,440 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-16 12:26:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:06,441 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-16 12:26:06,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-16 12:26:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:06,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:06,442 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:06,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:06,656 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2107902445, now seen corresponding path program 1 times [2020-10-16 12:26:06,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:06,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800749355] [2020-10-16 12:26:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800749355] [2020-10-16 12:26:06,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951591481] [2020-10-16 12:26:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:06,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:06,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:06,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:06,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [329900747] [2020-10-16 12:26:06,857 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:06,859 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:06,861 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 12:26:06,861 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:06,869 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,890 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:06,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:06,897 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:06,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:06,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:06,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:06,899 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 7 states. [2020-10-16 12:26:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:06,934 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-16 12:26:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:06,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:06,936 INFO L225 Difference]: With dead ends: 113 [2020-10-16 12:26:06,936 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 12:26:06,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 12:26:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-16 12:26:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:26:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-16 12:26:06,944 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-16 12:26:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:06,944 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-16 12:26:06,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-16 12:26:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:06,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:06,946 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:07,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:07,160 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2107903406, now seen corresponding path program 2 times [2020-10-16 12:26:07,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:07,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632515508] [2020-10-16 12:26:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632515508] [2020-10-16 12:26:07,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564629099] [2020-10-16 12:26:07,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:07,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:07,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:07,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:07,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1128490138] [2020-10-16 12:26:07,368 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:07,370 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:07,372 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-16 12:26:07,372 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:07,389 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,390 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,400 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,409 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:07,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:26:07,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:07,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:26:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:07,410 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 7 states. [2020-10-16 12:26:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:07,462 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-16 12:26:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:26:07,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-16 12:26:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:07,464 INFO L225 Difference]: With dead ends: 118 [2020-10-16 12:26:07,464 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:26:07,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:26:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-16 12:26:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:26:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-16 12:26:07,471 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-16 12:26:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:07,472 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-16 12:26:07,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:26:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-16 12:26:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:07,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:07,473 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:07,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:07,687 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2107932236, now seen corresponding path program 3 times [2020-10-16 12:26:07,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:07,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202098862] [2020-10-16 12:26:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202098862] [2020-10-16 12:26:07,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267017808] [2020-10-16 12:26:07,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:07,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:07,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:07,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:07,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:07,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:07,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:07,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1766699730] [2020-10-16 12:26:07,899 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:07,901 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:07,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-16 12:26:07,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:07,911 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:07,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,943 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:07,944 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,985 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,985 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:07,997 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:07,998 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,009 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2803#(and (<= (+ ~i~0 (* 2 ~j~0)) 5) (< ~i~0 46368))] [2020-10-16 12:26:08,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:08,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:08,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:08,011 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 8 states. [2020-10-16 12:26:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,096 INFO L93 Difference]: Finished difference Result 126 states and 295 transitions. [2020-10-16 12:26:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:08,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,097 INFO L225 Difference]: With dead ends: 126 [2020-10-16 12:26:08,097 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 12:26:08,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 12:26:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-10-16 12:26:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2020-10-16 12:26:08,108 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 11 [2020-10-16 12:26:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,108 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2020-10-16 12:26:08,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2020-10-16 12:26:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:08,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:08,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 12:26:08,311 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459196, now seen corresponding path program 4 times [2020-10-16 12:26:08,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190631916] [2020-10-16 12:26:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190631916] [2020-10-16 12:26:08,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032901174] [2020-10-16 12:26:08,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:08,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:08,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:08,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:08,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:08,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2097335250] [2020-10-16 12:26:08,507 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:08,508 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:08,510 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:08,510 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:08,512 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:08,512 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,536 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:08,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,560 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:08,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:08,572 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3173#(and (< ~i~0 46368) (<= ~j~0 5)), 3174#(and (<= (+ ~i~0 ~j~0) 5) (< ~i~0 46368))] [2020-10-16 12:26:08,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:08,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:08,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:08,573 INFO L87 Difference]: Start difference. First operand 98 states and 242 transitions. Second operand 9 states. [2020-10-16 12:26:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:08,679 INFO L93 Difference]: Finished difference Result 138 states and 324 transitions. [2020-10-16 12:26:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:08,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-16 12:26:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:08,682 INFO L225 Difference]: With dead ends: 138 [2020-10-16 12:26:08,682 INFO L226 Difference]: Without dead ends: 133 [2020-10-16 12:26:08,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-16 12:26:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-10-16 12:26:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 235 transitions. [2020-10-16 12:26:08,688 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 235 transitions. Word has length 11 [2020-10-16 12:26:08,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:08,688 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 235 transitions. [2020-10-16 12:26:08,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 235 transitions. [2020-10-16 12:26:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:08,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:08,690 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:08,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 12:26:08,905 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 2130044846, now seen corresponding path program 5 times [2020-10-16 12:26:08,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:08,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204886041] [2020-10-16 12:26:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:08,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204886041] [2020-10-16 12:26:08,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679053972] [2020-10-16 12:26:08,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:09,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:09,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:09,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:09,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:26:09,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1351847708] [2020-10-16 12:26:09,104 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:09,105 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:09,107 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:09,107 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:09,127 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:09,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:09,148 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3558#(and (< ~i~0 46368) (<= ~j~0 5))] [2020-10-16 12:26:09,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:09,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:26:09,149 INFO L87 Difference]: Start difference. First operand 98 states and 235 transitions. Second operand 8 states. [2020-10-16 12:26:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:09,340 INFO L93 Difference]: Finished difference Result 131 states and 309 transitions. [2020-10-16 12:26:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:26:09,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:09,342 INFO L225 Difference]: With dead ends: 131 [2020-10-16 12:26:09,342 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 12:26:09,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 12:26:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-10-16 12:26:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 12:26:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-16 12:26:09,355 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-16 12:26:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:09,355 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-16 12:26:09,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-16 12:26:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,356 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:09,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:09,563 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:09,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1822274800, now seen corresponding path program 4 times [2020-10-16 12:26:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:09,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318088620] [2020-10-16 12:26:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318088620] [2020-10-16 12:26:09,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739754740] [2020-10-16 12:26:09,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:09,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:09,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:09,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:09,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:09,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:09,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:09,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-16 12:26:09,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [872509461] [2020-10-16 12:26:09,817 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:09,818 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:09,820 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:09,821 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:09,859 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:09,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:09,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:09,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:09,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:09,860 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 8 states. [2020-10-16 12:26:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:09,962 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-16 12:26:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:09,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-16 12:26:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:09,964 INFO L225 Difference]: With dead ends: 143 [2020-10-16 12:26:09,964 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 12:26:09,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 12:26:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-16 12:26:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-16 12:26:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-16 12:26:09,971 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-16 12:26:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:09,971 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-16 12:26:09,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-16 12:26:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:26:09,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:09,972 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:10,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:10,184 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:10,185 INFO L82 PathProgramCache]: Analyzing trace with hash 62604888, now seen corresponding path program 4 times [2020-10-16 12:26:10,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:10,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968656400] [2020-10-16 12:26:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968656400] [2020-10-16 12:26:10,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574388668] [2020-10-16 12:26:10,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:10,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:10,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:10,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:10,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:10,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:10,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:10,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [123453] [2020-10-16 12:26:10,395 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:10,396 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:10,397 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-16 12:26:10,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:10,399 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:10,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:10,420 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:10,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:10,445 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:10,446 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:10,475 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:10,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:10,500 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4348#(and (< ~i~0 46368) (<= ~j~0 5)), 4349#(and (<= (+ ~i~0 ~j~0) 5) (< ~i~0 46368)), 4350#(and (<= (+ (* 2 ~i~0) ~j~0) 5) (< ~i~0 46368)), 4351#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) ~j~0) 5))] [2020-10-16 12:26:10,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:10,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:10,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:10,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:10,502 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 12 states. [2020-10-16 12:26:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:10,746 INFO L93 Difference]: Finished difference Result 150 states and 359 transitions. [2020-10-16 12:26:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:10,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-10-16 12:26:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:10,750 INFO L225 Difference]: With dead ends: 150 [2020-10-16 12:26:10,750 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 12:26:10,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 12:26:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2020-10-16 12:26:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-16 12:26:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-10-16 12:26:10,756 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 11 [2020-10-16 12:26:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:10,756 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-10-16 12:26:10,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-10-16 12:26:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:10,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:10,757 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-16 12:26:10,960 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash 920465749, now seen corresponding path program 6 times [2020-10-16 12:26:10,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:10,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847674220] [2020-10-16 12:26:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847674220] [2020-10-16 12:26:11,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766524789] [2020-10-16 12:26:11,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:11,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:11,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:11,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:11,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [20866073] [2020-10-16 12:26:11,211 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,213 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,219 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 31 transitions. [2020-10-16 12:26:11,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,227 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,227 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,248 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,248 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,258 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:11,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:11,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:11,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:11,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:11,260 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 8 states. [2020-10-16 12:26:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:11,312 INFO L93 Difference]: Finished difference Result 137 states and 327 transitions. [2020-10-16 12:26:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:11,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:11,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:11,315 INFO L225 Difference]: With dead ends: 137 [2020-10-16 12:26:11,315 INFO L226 Difference]: Without dead ends: 135 [2020-10-16 12:26:11,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-16 12:26:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 116. [2020-10-16 12:26:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:26:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-16 12:26:11,323 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-16 12:26:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:11,324 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-16 12:26:11,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-16 12:26:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:11,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:11,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:11,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:26:11,536 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash 920466710, now seen corresponding path program 7 times [2020-10-16 12:26:11,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:11,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361952183] [2020-10-16 12:26:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361952183] [2020-10-16 12:26:11,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237204634] [2020-10-16 12:26:11,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:11,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:11,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:11,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:11,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:11,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1202961112] [2020-10-16 12:26:11,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:11,797 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:11,799 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-10-16 12:26:11,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:11,815 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,815 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,824 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:11,825 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:11,833 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:11,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:11,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:11,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:11,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:11,835 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 8 states. [2020-10-16 12:26:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:11,893 INFO L93 Difference]: Finished difference Result 142 states and 337 transitions. [2020-10-16 12:26:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:11,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:11,894 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:26:11,895 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 12:26:11,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 12:26:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-10-16 12:26:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 283 transitions. [2020-10-16 12:26:11,902 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 283 transitions. Word has length 12 [2020-10-16 12:26:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:11,902 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 283 transitions. [2020-10-16 12:26:11,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 283 transitions. [2020-10-16 12:26:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:11,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:11,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:26:12,113 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash 920495540, now seen corresponding path program 8 times [2020-10-16 12:26:12,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857698750] [2020-10-16 12:26:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857698750] [2020-10-16 12:26:12,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924750713] [2020-10-16 12:26:12,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:12,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:12,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:12,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:12,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:12,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:12,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1549673534] [2020-10-16 12:26:12,327 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:12,328 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:12,330 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:12,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:12,333 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,346 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,347 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,354 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,355 INFO L87 Difference]: Start difference. First operand 114 states and 283 transitions. Second operand 8 states. [2020-10-16 12:26:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:12,426 INFO L93 Difference]: Finished difference Result 144 states and 341 transitions. [2020-10-16 12:26:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:12,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:12,427 INFO L225 Difference]: With dead ends: 144 [2020-10-16 12:26:12,427 INFO L226 Difference]: Without dead ends: 142 [2020-10-16 12:26:12,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-16 12:26:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2020-10-16 12:26:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 286 transitions. [2020-10-16 12:26:12,433 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 286 transitions. Word has length 12 [2020-10-16 12:26:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:12,433 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 286 transitions. [2020-10-16 12:26:12,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 286 transitions. [2020-10-16 12:26:12,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:12,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:12,435 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:12,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:12,648 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash 920496501, now seen corresponding path program 9 times [2020-10-16 12:26:12,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:12,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249222293] [2020-10-16 12:26:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249222293] [2020-10-16 12:26:12,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999177249] [2020-10-16 12:26:12,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:12,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:12,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:12,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:12,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:12,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:12,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:12,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [123073338] [2020-10-16 12:26:12,889 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:12,890 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:12,892 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-10-16 12:26:12,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:12,898 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,908 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:12,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:12,916 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:12,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:12,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:12,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:12,917 INFO L87 Difference]: Start difference. First operand 115 states and 286 transitions. Second operand 8 states. [2020-10-16 12:26:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,012 INFO L93 Difference]: Finished difference Result 145 states and 343 transitions. [2020-10-16 12:26:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:26:13,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,013 INFO L225 Difference]: With dead ends: 145 [2020-10-16 12:26:13,014 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 12:26:13,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 12:26:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-16 12:26:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 284 transitions. [2020-10-16 12:26:13,019 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 284 transitions. Word has length 12 [2020-10-16 12:26:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,019 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 284 transitions. [2020-10-16 12:26:13,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 284 transitions. [2020-10-16 12:26:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:13,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:26:13,231 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:13,231 INFO L82 PathProgramCache]: Analyzing trace with hash 921389270, now seen corresponding path program 10 times [2020-10-16 12:26:13,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:13,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265437903] [2020-10-16 12:26:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265437903] [2020-10-16 12:26:13,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137249843] [2020-10-16 12:26:13,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:13,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:13,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:13,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:13,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:13,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [195518808] [2020-10-16 12:26:13,453 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:13,455 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:13,458 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:13,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:13,470 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:13,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,496 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:13,497 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,520 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,520 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:13,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:13,543 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6468#(and (< ~i~0 46368) (<= (+ ~i~0 (* 3 ~j~0)) 7))] [2020-10-16 12:26:13,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:13,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:13,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:13,545 INFO L87 Difference]: Start difference. First operand 115 states and 284 transitions. Second operand 9 states. [2020-10-16 12:26:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:13,699 INFO L93 Difference]: Finished difference Result 155 states and 363 transitions. [2020-10-16 12:26:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:13,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:13,701 INFO L225 Difference]: With dead ends: 155 [2020-10-16 12:26:13,701 INFO L226 Difference]: Without dead ends: 153 [2020-10-16 12:26:13,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-16 12:26:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 119. [2020-10-16 12:26:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-16 12:26:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 296 transitions. [2020-10-16 12:26:13,707 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 296 transitions. Word has length 12 [2020-10-16 12:26:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:13,707 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 296 transitions. [2020-10-16 12:26:13,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 296 transitions. [2020-10-16 12:26:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:13,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:13,708 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:13,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:13,920 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:13,921 INFO L82 PathProgramCache]: Analyzing trace with hash 921390231, now seen corresponding path program 11 times [2020-10-16 12:26:13,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:13,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457394631] [2020-10-16 12:26:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:13,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457394631] [2020-10-16 12:26:13,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622691041] [2020-10-16 12:26:13,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:14,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:14,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:14,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:14,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:14,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:14,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1137474374] [2020-10-16 12:26:14,117 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:14,118 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:14,120 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-10-16 12:26:14,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:14,122 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,122 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,146 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,146 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,173 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,173 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,198 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6916#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 8) (< ~i~0 46368))] [2020-10-16 12:26:14,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:14,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:14,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:14,200 INFO L87 Difference]: Start difference. First operand 119 states and 296 transitions. Second operand 9 states. [2020-10-16 12:26:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:14,364 INFO L93 Difference]: Finished difference Result 154 states and 361 transitions. [2020-10-16 12:26:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:14,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:14,366 INFO L225 Difference]: With dead ends: 154 [2020-10-16 12:26:14,366 INFO L226 Difference]: Without dead ends: 152 [2020-10-16 12:26:14,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-16 12:26:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 117. [2020-10-16 12:26:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 290 transitions. [2020-10-16 12:26:14,371 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 290 transitions. Word has length 12 [2020-10-16 12:26:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:14,371 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 290 transitions. [2020-10-16 12:26:14,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 290 transitions. [2020-10-16 12:26:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:14,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:14,375 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:14,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:14,576 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash 921419061, now seen corresponding path program 12 times [2020-10-16 12:26:14,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:14,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47274134] [2020-10-16 12:26:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47274134] [2020-10-16 12:26:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402711914] [2020-10-16 12:26:14,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:14,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:14,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:14,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:14,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:14,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:14,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:14,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [530035550] [2020-10-16 12:26:14,793 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:14,794 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:14,796 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 39 transitions. [2020-10-16 12:26:14,796 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:14,802 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,803 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,837 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,864 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,884 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:14,884 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,895 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,909 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:14,909 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:14,916 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7360#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 7)), 7359#(and (<= (+ ~i~0 (* 2 ~j~0)) 7) (< ~i~0 46368))] [2020-10-16 12:26:14,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:14,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:14,919 INFO L87 Difference]: Start difference. First operand 117 states and 290 transitions. Second operand 10 states. [2020-10-16 12:26:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:15,104 INFO L93 Difference]: Finished difference Result 151 states and 352 transitions. [2020-10-16 12:26:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:15,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-16 12:26:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:15,106 INFO L225 Difference]: With dead ends: 151 [2020-10-16 12:26:15,106 INFO L226 Difference]: Without dead ends: 149 [2020-10-16 12:26:15,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-16 12:26:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 115. [2020-10-16 12:26:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 284 transitions. [2020-10-16 12:26:15,112 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 284 transitions. Word has length 12 [2020-10-16 12:26:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:15,113 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 284 transitions. [2020-10-16 12:26:15,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 284 transitions. [2020-10-16 12:26:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:15,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:15,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-16 12:26:15,326 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725030, now seen corresponding path program 13 times [2020-10-16 12:26:15,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440367692] [2020-10-16 12:26:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440367692] [2020-10-16 12:26:15,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585675447] [2020-10-16 12:26:15,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:15,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:15,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:15,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:15,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:15,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [371736152] [2020-10-16 12:26:15,539 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:15,540 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:15,542 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:15,542 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:15,547 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:15,547 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,569 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:15,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:15,591 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7802#(and (<= (+ ~i~0 (* 2 ~j~0)) 8) (< ~i~0 46368))] [2020-10-16 12:26:15,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:15,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:15,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:15,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:15,592 INFO L87 Difference]: Start difference. First operand 115 states and 284 transitions. Second operand 9 states. [2020-10-16 12:26:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:15,721 INFO L93 Difference]: Finished difference Result 159 states and 372 transitions. [2020-10-16 12:26:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:15,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:15,722 INFO L225 Difference]: With dead ends: 159 [2020-10-16 12:26:15,722 INFO L226 Difference]: Without dead ends: 157 [2020-10-16 12:26:15,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-16 12:26:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 118. [2020-10-16 12:26:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 12:26:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 295 transitions. [2020-10-16 12:26:15,727 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 295 transitions. Word has length 12 [2020-10-16 12:26:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:15,728 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 295 transitions. [2020-10-16 12:26:15,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 295 transitions. [2020-10-16 12:26:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:15,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:15,729 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:15,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:15,941 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:15,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725991, now seen corresponding path program 14 times [2020-10-16 12:26:15,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:15,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798012723] [2020-10-16 12:26:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798012723] [2020-10-16 12:26:16,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499645703] [2020-10-16 12:26:16,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:16,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:16,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [231741503] [2020-10-16 12:26:16,183 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,184 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,187 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:16,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,190 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,210 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,210 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,236 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,246 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,247 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,266 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [8252#(and (<= ~j~0 7) (< ~i~0 46368)), 8253#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 7)), 8254#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 7))] [2020-10-16 12:26:16,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:16,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:16,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:16,267 INFO L87 Difference]: Start difference. First operand 118 states and 295 transitions. Second operand 11 states. [2020-10-16 12:26:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:16,450 INFO L93 Difference]: Finished difference Result 170 states and 398 transitions. [2020-10-16 12:26:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:16,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-16 12:26:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:16,452 INFO L225 Difference]: With dead ends: 170 [2020-10-16 12:26:16,452 INFO L226 Difference]: Without dead ends: 165 [2020-10-16 12:26:16,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-16 12:26:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 113. [2020-10-16 12:26:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 12:26:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 278 transitions. [2020-10-16 12:26:16,458 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 278 transitions. Word has length 12 [2020-10-16 12:26:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:16,458 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 278 transitions. [2020-10-16 12:26:16,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 278 transitions. [2020-10-16 12:26:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:16,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:16,459 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:16,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 12:26:16,673 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1578914119, now seen corresponding path program 15 times [2020-10-16 12:26:16,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:16,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102409493] [2020-10-16 12:26:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102409493] [2020-10-16 12:26:16,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707174245] [2020-10-16 12:26:16,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:16,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:16,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:16,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:16,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:16,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:16,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049920381] [2020-10-16 12:26:16,887 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:16,888 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:16,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-10-16 12:26:16,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:16,894 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:16,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,924 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:16,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:16,945 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8709#(and (< ~i~0 46368) (<= ~j~0 5))] [2020-10-16 12:26:16,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:16,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:16,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:16,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:16,946 INFO L87 Difference]: Start difference. First operand 113 states and 278 transitions. Second operand 9 states. [2020-10-16 12:26:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:17,079 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-16 12:26:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:17,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:17,081 INFO L225 Difference]: With dead ends: 165 [2020-10-16 12:26:17,081 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:17,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 115. [2020-10-16 12:26:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:17,086 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:17,086 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:17,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:17,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:17,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:17,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 12:26:17,298 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:17,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1579837640, now seen corresponding path program 16 times [2020-10-16 12:26:17,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:17,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225693037] [2020-10-16 12:26:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225693037] [2020-10-16 12:26:17,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504460921] [2020-10-16 12:26:17,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:17,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:17,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:17,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:17,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:17,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:17,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:17,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1978572111] [2020-10-16 12:26:17,507 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:17,508 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:17,510 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-16 12:26:17,510 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:17,521 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:17,521 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:17,542 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9159#(and (< ~i~0 46368) (<= ~j~0 8))] [2020-10-16 12:26:17,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:17,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:17,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:17,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:17,543 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 9 states. [2020-10-16 12:26:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:17,757 INFO L93 Difference]: Finished difference Result 164 states and 388 transitions. [2020-10-16 12:26:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:17,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:17,759 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:26:17,760 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:17,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2020-10-16 12:26:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:17,766 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:17,766 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:17,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:17,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:17,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:17,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:17,982 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880180, now seen corresponding path program 17 times [2020-10-16 12:26:17,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:17,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220931074] [2020-10-16 12:26:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220931074] [2020-10-16 12:26:18,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445564761] [2020-10-16 12:26:18,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:18,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:18,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:18,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:18,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:18,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:18,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1642101114] [2020-10-16 12:26:18,266 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:18,267 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:18,268 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-10-16 12:26:18,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:18,281 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:18,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:18,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:18,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:26:18,282 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 8 states. [2020-10-16 12:26:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:18,488 INFO L93 Difference]: Finished difference Result 159 states and 368 transitions. [2020-10-16 12:26:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:18,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-16 12:26:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:18,489 INFO L225 Difference]: With dead ends: 159 [2020-10-16 12:26:18,489 INFO L226 Difference]: Without dead ends: 157 [2020-10-16 12:26:18,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-16 12:26:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-16 12:26:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 12:26:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 285 transitions. [2020-10-16 12:26:18,494 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 285 transitions. Word has length 12 [2020-10-16 12:26:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:18,494 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 285 transitions. [2020-10-16 12:26:18,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:26:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 285 transitions. [2020-10-16 12:26:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:18,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:18,495 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:18,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 12:26:18,704 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1606881141, now seen corresponding path program 18 times [2020-10-16 12:26:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:18,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165520257] [2020-10-16 12:26:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165520257] [2020-10-16 12:26:18,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997032181] [2020-10-16 12:26:18,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:18,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:18,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:18,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:18,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:18,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [727061095] [2020-10-16 12:26:18,898 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:18,899 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:18,901 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:18,901 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:18,911 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:18,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:18,930 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:18,930 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:18,958 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10067#(and (< ~i~0 46368) (<= ~j~0 8)), 10068#(and (<= (+ ~i~0 ~j~0) 8) (< ~i~0 46368))] [2020-10-16 12:26:18,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:18,959 INFO L87 Difference]: Start difference. First operand 117 states and 285 transitions. Second operand 10 states. [2020-10-16 12:26:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:19,198 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-10-16 12:26:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:19,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-16 12:26:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:19,200 INFO L225 Difference]: With dead ends: 158 [2020-10-16 12:26:19,200 INFO L226 Difference]: Without dead ends: 153 [2020-10-16 12:26:19,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-16 12:26:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 115. [2020-10-16 12:26:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:19,205 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:19,205 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:19,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:19,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:19,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:19,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:19,417 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1607543270, now seen corresponding path program 19 times [2020-10-16 12:26:19,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:19,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727268633] [2020-10-16 12:26:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727268633] [2020-10-16 12:26:19,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283602769] [2020-10-16 12:26:19,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:19,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:19,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:19,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:19,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1893701203] [2020-10-16 12:26:19,637 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:19,638 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:19,640 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-10-16 12:26:19,640 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:19,652 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:19,652 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:19,670 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10519#(and (<= ~j~0 7) (< ~i~0 46368))] [2020-10-16 12:26:19,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:19,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:19,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:19,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:19,671 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 9 states. [2020-10-16 12:26:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:19,942 INFO L93 Difference]: Finished difference Result 162 states and 385 transitions. [2020-10-16 12:26:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:19,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:19,944 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:19,945 INFO L226 Difference]: Without dead ends: 157 [2020-10-16 12:26:19,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-16 12:26:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 115. [2020-10-16 12:26:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 12:26:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 277 transitions. [2020-10-16 12:26:19,953 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 277 transitions. Word has length 12 [2020-10-16 12:26:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:19,953 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 277 transitions. [2020-10-16 12:26:19,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 277 transitions. [2020-10-16 12:26:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:19,954 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:20,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:26:20,157 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1608466791, now seen corresponding path program 20 times [2020-10-16 12:26:20,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:20,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092604132] [2020-10-16 12:26:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092604132] [2020-10-16 12:26:20,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005348320] [2020-10-16 12:26:20,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:20,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:20,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:20,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:26:20,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:20,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 12:26:20,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772442412] [2020-10-16 12:26:20,371 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:20,372 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:20,374 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:20,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:20,391 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:20,391 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:20,410 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10974#(and (<= ~j~0 7) (< ~i~0 46368))] [2020-10-16 12:26:20,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:20,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:26:20,412 INFO L87 Difference]: Start difference. First operand 115 states and 277 transitions. Second operand 9 states. [2020-10-16 12:26:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:20,660 INFO L93 Difference]: Finished difference Result 161 states and 376 transitions. [2020-10-16 12:26:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:26:20,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:20,663 INFO L225 Difference]: With dead ends: 161 [2020-10-16 12:26:20,663 INFO L226 Difference]: Without dead ends: 156 [2020-10-16 12:26:20,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-16 12:26:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2020-10-16 12:26:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:26:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-16 12:26:20,668 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-16 12:26:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:20,668 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-16 12:26:20,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-16 12:26:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:20,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:20,669 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:20,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:26:20,880 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:20,880 INFO L82 PathProgramCache]: Analyzing trace with hash -655922238, now seen corresponding path program 5 times [2020-10-16 12:26:20,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:20,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125701934] [2020-10-16 12:26:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:20,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125701934] [2020-10-16 12:26:20,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994767672] [2020-10-16 12:26:20,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:21,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:21,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:21,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:21,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:21,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:26:21,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882447416] [2020-10-16 12:26:21,144 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:21,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:21,148 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-16 12:26:21,148 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:21,168 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:21,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:21,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:21,169 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 9 states. [2020-10-16 12:26:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:21,281 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-16 12:26:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:21,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 12:26:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:21,282 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:26:21,283 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 12:26:21,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:26:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 12:26:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-16 12:26:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 12:26:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-16 12:26:21,288 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-16 12:26:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:21,288 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-16 12:26:21,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-16 12:26:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:26:21,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:21,290 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:21,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:21,500 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:21,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1940751883, now seen corresponding path program 5 times [2020-10-16 12:26:21,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:21,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618590437] [2020-10-16 12:26:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618590437] [2020-10-16 12:26:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840088084] [2020-10-16 12:26:21,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:21,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:21,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:21,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:21,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:21,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:21,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [315819455] [2020-10-16 12:26:21,828 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:21,829 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:21,831 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-16 12:26:21,832 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:21,833 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,866 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,867 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,904 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,905 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:21,985 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:21,985 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,023 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:22,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,060 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [11897#(and (<= ~j~0 6) (< ~i~0 46368)), 11898#(and (<= (+ ~i~0 ~j~0) 6) (< ~i~0 46368)), 11899#(and (<= (+ (* 2 ~i~0) ~j~0) 6) (< ~i~0 46368)), 11900#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) ~j~0) 6)), 11901#(and (< ~i~0 46368) (<= (+ (* 4 ~i~0) ~j~0) 6))] [2020-10-16 12:26:22,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:26:22,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:26:22,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:22,062 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 14 states. [2020-10-16 12:26:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:22,425 INFO L93 Difference]: Finished difference Result 181 states and 433 transitions. [2020-10-16 12:26:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:22,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-10-16 12:26:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:22,428 INFO L225 Difference]: With dead ends: 181 [2020-10-16 12:26:22,428 INFO L226 Difference]: Without dead ends: 175 [2020-10-16 12:26:22,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:26:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-16 12:26:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 131. [2020-10-16 12:26:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-16 12:26:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-10-16 12:26:22,436 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 12 [2020-10-16 12:26:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:22,437 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-10-16 12:26:22,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:26:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-10-16 12:26:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:22,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:22,440 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:22,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:22,655 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1530333459, now seen corresponding path program 21 times [2020-10-16 12:26:22,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:22,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183701060] [2020-10-16 12:26:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183701060] [2020-10-16 12:26:22,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868097665] [2020-10-16 12:26:22,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:22,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:22,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:22,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:22,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:22,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:22,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:22,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [437203576] [2020-10-16 12:26:22,926 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:22,928 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:22,930 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:26:22,930 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:22,936 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,937 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,958 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:22,958 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:22,969 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:22,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:22,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:22,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:22,971 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 9 states. [2020-10-16 12:26:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,010 INFO L93 Difference]: Finished difference Result 162 states and 389 transitions. [2020-10-16 12:26:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:23,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,011 INFO L225 Difference]: With dead ends: 162 [2020-10-16 12:26:23,011 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:26:23,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:26:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2020-10-16 12:26:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 345 transitions. [2020-10-16 12:26:23,018 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 345 transitions. Word has length 13 [2020-10-16 12:26:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,018 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 345 transitions. [2020-10-16 12:26:23,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 345 transitions. [2020-10-16 12:26:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,019 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-16 12:26:23,229 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1530332498, now seen corresponding path program 22 times [2020-10-16 12:26:23,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913813549] [2020-10-16 12:26:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913813549] [2020-10-16 12:26:23,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978179389] [2020-10-16 12:26:23,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:23,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:23,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:23,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:23,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:23,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1372220557] [2020-10-16 12:26:23,482 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:23,483 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:23,486 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-10-16 12:26:23,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:23,499 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,499 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,506 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:23,506 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:23,512 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:23,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:23,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:23,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:23,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:23,513 INFO L87 Difference]: Start difference. First operand 137 states and 345 transitions. Second operand 9 states. [2020-10-16 12:26:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:23,574 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:23,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:23,576 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:23,576 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:23,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:23,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 135. [2020-10-16 12:26:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:23,580 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:23,581 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:23,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:23,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:23,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:23,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:23,791 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:23,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1530303668, now seen corresponding path program 23 times [2020-10-16 12:26:23,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:23,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965130824] [2020-10-16 12:26:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:23,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965130824] [2020-10-16 12:26:23,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784676710] [2020-10-16 12:26:23,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:23,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:23,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:23,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:23,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [152100809] [2020-10-16 12:26:24,203 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,204 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,207 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:24,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,223 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,223 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,232 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,232 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,240 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,241 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:24,330 INFO L93 Difference]: Finished difference Result 169 states and 403 transitions. [2020-10-16 12:26:24,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:24,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:24,332 INFO L225 Difference]: With dead ends: 169 [2020-10-16 12:26:24,332 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 12:26:24,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 12:26:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2020-10-16 12:26:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-16 12:26:24,337 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-16 12:26:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:24,337 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-16 12:26:24,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-16 12:26:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:24,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:24,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:24,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 12:26:24,549 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:24,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1530302707, now seen corresponding path program 24 times [2020-10-16 12:26:24,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:24,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105291069] [2020-10-16 12:26:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105291069] [2020-10-16 12:26:24,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437562993] [2020-10-16 12:26:24,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:24,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:24,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:24,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:24,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:24,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [501646090] [2020-10-16 12:26:24,857 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:24,858 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:24,861 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 12:26:24,861 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:24,870 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,879 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:24,880 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:24,888 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:24,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:24,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:24,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:24,889 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 9 states. [2020-10-16 12:26:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:24,979 INFO L93 Difference]: Finished difference Result 171 states and 408 transitions. [2020-10-16 12:26:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:24,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:24,981 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:24,981 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:24,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 133. [2020-10-16 12:26:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 333 transitions. [2020-10-16 12:26:24,985 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 333 transitions. Word has length 13 [2020-10-16 12:26:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:24,985 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 333 transitions. [2020-10-16 12:26:24,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 333 transitions. [2020-10-16 12:26:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:24,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:24,986 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 12:26:25,196 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1529409938, now seen corresponding path program 25 times [2020-10-16 12:26:25,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055861205] [2020-10-16 12:26:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055861205] [2020-10-16 12:26:25,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562347925] [2020-10-16 12:26:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:25,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:25,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:25,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2039560463] [2020-10-16 12:26:25,455 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:25,457 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:25,458 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:25,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:25,473 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,477 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:25,477 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:25,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:25,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:25,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:25,491 INFO L87 Difference]: Start difference. First operand 133 states and 333 transitions. Second operand 9 states. [2020-10-16 12:26:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:25,590 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:25,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:25,592 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:25,593 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:25,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:25,598 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:25,598 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:25,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:25,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:25,599 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:25,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 12:26:25,808 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1529408977, now seen corresponding path program 26 times [2020-10-16 12:26:25,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:25,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866449018] [2020-10-16 12:26:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:25,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866449018] [2020-10-16 12:26:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825475092] [2020-10-16 12:26:25,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:25,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:25,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:25,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1315204286] [2020-10-16 12:26:26,029 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,030 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,033 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,033 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,047 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,048 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,052 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,052 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,061 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,062 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,175 INFO L93 Difference]: Finished difference Result 174 states and 413 transitions. [2020-10-16 12:26:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,177 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:26:26,177 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 12:26:26,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 12:26:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 134. [2020-10-16 12:26:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2020-10-16 12:26:26,182 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 13 [2020-10-16 12:26:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,183 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2020-10-16 12:26:26,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2020-10-16 12:26:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:26,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:26:26,384 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1529380147, now seen corresponding path program 27 times [2020-10-16 12:26:26,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:26,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427154831] [2020-10-16 12:26:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427154831] [2020-10-16 12:26:26,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221130463] [2020-10-16 12:26:26,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:26,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:26,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:26,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:26,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:26,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:26,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:26,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [771575077] [2020-10-16 12:26:26,662 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:26,663 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:26,665 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:26,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:26,671 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,675 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:26,675 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:26,681 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:26,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:26,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:26,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:26,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:26,683 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand 9 states. [2020-10-16 12:26:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:26,795 INFO L93 Difference]: Finished difference Result 171 states and 407 transitions. [2020-10-16 12:26:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:26,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:26,797 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:26,797 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:26,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-16 12:26:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:26,801 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:26,802 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:26,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:26,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:26,803 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 12:26:27,014 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1529379186, now seen corresponding path program 28 times [2020-10-16 12:26:27,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701937277] [2020-10-16 12:26:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701937277] [2020-10-16 12:26:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642819162] [2020-10-16 12:26:27,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:27,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:27,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:27,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:27,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1625724778] [2020-10-16 12:26:27,260 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:27,262 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:27,264 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 12:26:27,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:27,273 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,274 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,279 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,288 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:27,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:27,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:27,289 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 9 states. [2020-10-16 12:26:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:27,406 INFO L93 Difference]: Finished difference Result 171 states and 409 transitions. [2020-10-16 12:26:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:26:27,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:27,410 INFO L225 Difference]: With dead ends: 171 [2020-10-16 12:26:27,410 INFO L226 Difference]: Without dead ends: 169 [2020-10-16 12:26:27,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-16 12:26:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-10-16 12:26:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-16 12:26:27,414 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 13 [2020-10-16 12:26:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:27,414 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-16 12:26:27,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-16 12:26:27,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:27,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:27,415 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:27,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:26:27,624 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1501704308, now seen corresponding path program 29 times [2020-10-16 12:26:27,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:27,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013580940] [2020-10-16 12:26:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013580940] [2020-10-16 12:26:27,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469537925] [2020-10-16 12:26:27,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:27,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:27,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:27,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:27,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:27,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:27,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [605109488] [2020-10-16 12:26:27,867 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:27,868 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:27,869 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:27,870 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:27,870 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:27,871 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,901 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:27,902 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,920 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,929 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:27,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:27,936 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16372#(and (< ~i~0 46368) (<= (+ ~i~0 (* 4 ~j~0)) 9))] [2020-10-16 12:26:27,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:27,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:27,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:27,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:27,936 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,118 INFO L93 Difference]: Finished difference Result 186 states and 437 transitions. [2020-10-16 12:26:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:28,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,120 INFO L225 Difference]: With dead ends: 186 [2020-10-16 12:26:28,120 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:26:28,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:26:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 140. [2020-10-16 12:26:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:26:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-16 12:26:28,126 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-16 12:26:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,126 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-16 12:26:28,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-16 12:26:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,127 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:28,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:26:28,335 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:28,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1501703347, now seen corresponding path program 30 times [2020-10-16 12:26:28,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:28,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239399642] [2020-10-16 12:26:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239399642] [2020-10-16 12:26:28,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658580700] [2020-10-16 12:26:28,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:28,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:28,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:28,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:28,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:28,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:28,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [251118] [2020-10-16 12:26:28,581 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:28,582 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:28,584 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:28,585 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:28,587 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:28,588 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,613 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:28,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,637 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,637 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,646 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:28,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:28,674 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [16900#(and (<= (+ (* 2 ~i~0) (* 5 ~j~0)) 12) (< ~i~0 46368))] [2020-10-16 12:26:28,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:28,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:28,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:28,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:28,675 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 10 states. [2020-10-16 12:26:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:28,861 INFO L93 Difference]: Finished difference Result 188 states and 442 transitions. [2020-10-16 12:26:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:28,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:28,863 INFO L225 Difference]: With dead ends: 188 [2020-10-16 12:26:28,863 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 12:26:28,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 12:26:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 138. [2020-10-16 12:26:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 346 transitions. [2020-10-16 12:26:28,867 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 346 transitions. Word has length 13 [2020-10-16 12:26:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:28,868 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 346 transitions. [2020-10-16 12:26:28,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 346 transitions. [2020-10-16 12:26:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:28,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:28,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,069 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1501674517, now seen corresponding path program 31 times [2020-10-16 12:26:29,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389231985] [2020-10-16 12:26:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389231985] [2020-10-16 12:26:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502627530] [2020-10-16 12:26:29,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:29,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:29,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1184282979] [2020-10-16 12:26:29,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:29,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:29,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:29,290 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:29,297 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:29,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,324 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:29,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,355 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,355 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,364 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:29,365 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:29,373 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17426#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 5 ~j~0)) 13))] [2020-10-16 12:26:29,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:29,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:29,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:29,374 INFO L87 Difference]: Start difference. First operand 138 states and 346 transitions. Second operand 10 states. [2020-10-16 12:26:29,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:29,532 INFO L93 Difference]: Finished difference Result 184 states and 433 transitions. [2020-10-16 12:26:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:29,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:29,535 INFO L225 Difference]: With dead ends: 184 [2020-10-16 12:26:29,535 INFO L226 Difference]: Without dead ends: 182 [2020-10-16 12:26:29,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-16 12:26:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 139. [2020-10-16 12:26:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 349 transitions. [2020-10-16 12:26:29,539 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 349 transitions. Word has length 13 [2020-10-16 12:26:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:29,539 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 349 transitions. [2020-10-16 12:26:29,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 349 transitions. [2020-10-16 12:26:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:29,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:29,540 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:29,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:29,740 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1501673556, now seen corresponding path program 32 times [2020-10-16 12:26:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:29,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987556088] [2020-10-16 12:26:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987556088] [2020-10-16 12:26:29,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149585382] [2020-10-16 12:26:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:29,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:29,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:29,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:29,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:29,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:29,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:29,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [448056169] [2020-10-16 12:26:29,982 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:29,984 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:29,986 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-16 12:26:29,986 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:29,988 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:29,988 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,012 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:30,013 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,048 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,049 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,060 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,061 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,068 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17950#(and (<= (+ (* 3 ~i~0) (* 4 ~j~0)) 11) (< ~i~0 46368))] [2020-10-16 12:26:30,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:30,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:30,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:30,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:30,069 INFO L87 Difference]: Start difference. First operand 139 states and 349 transitions. Second operand 10 states. [2020-10-16 12:26:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:30,271 INFO L93 Difference]: Finished difference Result 187 states and 440 transitions. [2020-10-16 12:26:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:30,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:30,274 INFO L225 Difference]: With dead ends: 187 [2020-10-16 12:26:30,274 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 12:26:30,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 12:26:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 136. [2020-10-16 12:26:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2020-10-16 12:26:30,280 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 13 [2020-10-16 12:26:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:30,281 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2020-10-16 12:26:30,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2020-10-16 12:26:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:30,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:30,282 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:30,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:30,483 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1500780787, now seen corresponding path program 33 times [2020-10-16 12:26:30,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:30,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855061256] [2020-10-16 12:26:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855061256] [2020-10-16 12:26:30,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680503412] [2020-10-16 12:26:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:30,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:30,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:30,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:30,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:30,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:30,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:30,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [39813334] [2020-10-16 12:26:30,764 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:30,765 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:30,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-10-16 12:26:30,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:30,778 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:30,778 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,804 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:30,804 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,821 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:30,821 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,850 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:30,850 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,872 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,872 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,886 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:30,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:30,896 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [18471#(and (< ~i~0 46368) (<= (+ ~i~0 (* 3 ~j~0)) 10)), 18472#(and (< ~i~0 46368) (<= (+ (* 4 ~i~0) (* 3 ~j~0)) 10))] [2020-10-16 12:26:30,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:30,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:30,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:30,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:30,898 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 11 states. [2020-10-16 12:26:31,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:31,202 INFO L93 Difference]: Finished difference Result 185 states and 433 transitions. [2020-10-16 12:26:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:26:31,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:31,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:31,204 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:31,204 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 12:26:31,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 12:26:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 137. [2020-10-16 12:26:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 12:26:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 343 transitions. [2020-10-16 12:26:31,209 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 343 transitions. Word has length 13 [2020-10-16 12:26:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:31,209 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 343 transitions. [2020-10-16 12:26:31,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 343 transitions. [2020-10-16 12:26:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:31,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:31,210 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:31,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 12:26:31,421 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:31,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1500779826, now seen corresponding path program 34 times [2020-10-16 12:26:31,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:31,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640868445] [2020-10-16 12:26:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640868445] [2020-10-16 12:26:31,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776788188] [2020-10-16 12:26:31,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:31,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:31,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:31,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:31,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:31,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:31,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1665889502] [2020-10-16 12:26:31,685 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:31,687 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:31,689 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-10-16 12:26:31,689 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:31,699 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:31,699 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,728 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:31,729 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,745 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:31,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,774 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:31,775 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,808 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:31,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:31,814 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [19003#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 11)), 19004#(and (<= (+ (* 5 ~i~0) (* 3 ~j~0)) 11) (< ~i~0 46368))] [2020-10-16 12:26:31,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:31,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:31,815 INFO L87 Difference]: Start difference. First operand 137 states and 343 transitions. Second operand 11 states. [2020-10-16 12:26:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:32,096 INFO L93 Difference]: Finished difference Result 186 states and 436 transitions. [2020-10-16 12:26:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:32,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:32,098 INFO L225 Difference]: With dead ends: 186 [2020-10-16 12:26:32,099 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:26:32,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:26:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2020-10-16 12:26:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2020-10-16 12:26:32,103 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 13 [2020-10-16 12:26:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:32,103 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2020-10-16 12:26:32,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2020-10-16 12:26:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:32,108 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:32,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:32,319 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:32,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1500750996, now seen corresponding path program 35 times [2020-10-16 12:26:32,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:32,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832308240] [2020-10-16 12:26:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832308240] [2020-10-16 12:26:32,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021096938] [2020-10-16 12:26:32,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:32,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:32,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:32,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:32,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:32,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:32,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:32,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [534674116] [2020-10-16 12:26:32,575 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:32,576 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:32,578 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 47 transitions. [2020-10-16 12:26:32,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:32,582 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,608 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,609 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,655 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,656 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,672 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,672 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,690 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,690 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,716 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:32,716 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,718 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,722 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:32,722 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:32,738 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [19532#(and (< ~i~0 46368) (<= (+ ~i~0 (* 2 ~j~0)) 9)), 19533#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 9) (< ~i~0 46368)), 19534#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 9))] [2020-10-16 12:26:32,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:32,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:32,739 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 12 states. [2020-10-16 12:26:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:33,046 INFO L93 Difference]: Finished difference Result 192 states and 448 transitions. [2020-10-16 12:26:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:26:33,046 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:33,048 INFO L225 Difference]: With dead ends: 192 [2020-10-16 12:26:33,048 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:33,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 133. [2020-10-16 12:26:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 331 transitions. [2020-10-16 12:26:33,054 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 331 transitions. Word has length 13 [2020-10-16 12:26:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:33,054 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 331 transitions. [2020-10-16 12:26:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 331 transitions. [2020-10-16 12:26:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:33,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:33,055 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:33,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:33,266 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:33,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:33,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1044835068, now seen corresponding path program 36 times [2020-10-16 12:26:33,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:33,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360258705] [2020-10-16 12:26:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360258705] [2020-10-16 12:26:33,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390010507] [2020-10-16 12:26:33,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:33,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:26:33,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:33,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:33,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:33,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:33,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:33,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321110493] [2020-10-16 12:26:33,530 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:33,531 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:33,533 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:33,533 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:33,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:33,534 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:33,559 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:33,560 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:33,572 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20062#(and (<= (+ ~i~0 (* 3 ~j~0)) 11) (< ~i~0 46368))] [2020-10-16 12:26:33,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:33,573 INFO L87 Difference]: Start difference. First operand 133 states and 331 transitions. Second operand 10 states. [2020-10-16 12:26:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:33,741 INFO L93 Difference]: Finished difference Result 193 states and 451 transitions. [2020-10-16 12:26:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:33,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:33,744 INFO L225 Difference]: With dead ends: 193 [2020-10-16 12:26:33,744 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:26:33,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:26:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 138. [2020-10-16 12:26:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 348 transitions. [2020-10-16 12:26:33,748 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 348 transitions. Word has length 13 [2020-10-16 12:26:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:33,748 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 348 transitions. [2020-10-16 12:26:33,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 348 transitions. [2020-10-16 12:26:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:33,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:33,749 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:33,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 12:26:33,960 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1044836029, now seen corresponding path program 37 times [2020-10-16 12:26:33,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:33,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789736100] [2020-10-16 12:26:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789736100] [2020-10-16 12:26:34,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574684714] [2020-10-16 12:26:34,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:34,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:34,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:34,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [918372045] [2020-10-16 12:26:34,228 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:34,229 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:34,232 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:34,232 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:34,235 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:34,235 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,245 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:34,246 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,278 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [20593#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 13))] [2020-10-16 12:26:34,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:34,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:34,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:34,279 INFO L87 Difference]: Start difference. First operand 138 states and 348 transitions. Second operand 10 states. [2020-10-16 12:26:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:34,449 INFO L93 Difference]: Finished difference Result 192 states and 449 transitions. [2020-10-16 12:26:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:26:34,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:34,451 INFO L225 Difference]: With dead ends: 192 [2020-10-16 12:26:34,451 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:34,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 136. [2020-10-16 12:26:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-16 12:26:34,456 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-16 12:26:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:34,456 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-16 12:26:34,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-16 12:26:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:34,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:34,457 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:34,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-16 12:26:34,669 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864859, now seen corresponding path program 38 times [2020-10-16 12:26:34,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849503423] [2020-10-16 12:26:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849503423] [2020-10-16 12:26:34,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200188706] [2020-10-16 12:26:34,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:34,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:34,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:34,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:34,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:34,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:34,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:34,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [109101723] [2020-10-16 12:26:34,902 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:34,903 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:34,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:34,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:34,910 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:34,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,925 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:34,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,962 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:34,963 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:34,996 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [21120#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 12) (< ~i~0 46368)), 21119#(and (<= (+ ~i~0 (* 2 ~j~0)) 12) (< ~i~0 46368))] [2020-10-16 12:26:34,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:34,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:34,997 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 11 states. [2020-10-16 12:26:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:35,259 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-16 12:26:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:35,260 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:35,262 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:35,262 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 12:26:35,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:35,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 12:26:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 138. [2020-10-16 12:26:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 12:26:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-16 12:26:35,269 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-16 12:26:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:35,270 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-16 12:26:35,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-16 12:26:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:35,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:35,271 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:35,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-16 12:26:35,484 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1044865820, now seen corresponding path program 39 times [2020-10-16 12:26:35,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:35,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799991903] [2020-10-16 12:26:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799991903] [2020-10-16 12:26:35,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490472495] [2020-10-16 12:26:35,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:35,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:35,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:35,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:35,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:35,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:35,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:35,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [124294400] [2020-10-16 12:26:35,775 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:35,776 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:35,779 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:35,779 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:35,783 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:35,783 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,791 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,791 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,821 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,821 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,849 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,850 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,886 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:35,887 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:35,930 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [21657#(and (< ~i~0 46368) (<= ~j~0 9)), 21658#(and (<= (+ ~i~0 ~j~0) 9) (< ~i~0 46368)), 21659#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 9)), 21660#(and (<= (+ (* 3 ~i~0) ~j~0) 9) (< ~i~0 46368))] [2020-10-16 12:26:35,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:26:35,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:26:35,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:35,932 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 13 states. [2020-10-16 12:26:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:36,292 INFO L93 Difference]: Finished difference Result 209 states and 496 transitions. [2020-10-16 12:26:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:36,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-10-16 12:26:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:36,295 INFO L225 Difference]: With dead ends: 209 [2020-10-16 12:26:36,295 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 12:26:36,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 12:26:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 135. [2020-10-16 12:26:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 12:26:36,302 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 12:26:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:36,302 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 12:26:36,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:26:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 12:26:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:36,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:36,304 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:36,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:36,518 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1681171789, now seen corresponding path program 40 times [2020-10-16 12:26:36,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:36,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513589505] [2020-10-16 12:26:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513589505] [2020-10-16 12:26:36,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029153846] [2020-10-16 12:26:36,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:36,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:36,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:36,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:36,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:36,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:36,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:36,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1045712258] [2020-10-16 12:26:36,776 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:36,777 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:36,779 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 39 transitions. [2020-10-16 12:26:36,779 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:36,782 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,783 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,808 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,843 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:36,843 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,878 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:36,879 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:36,900 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [22208#(and (<= (+ ~i~0 ~j~0) 10) (< ~i~0 46368)), 22209#(and (<= (+ (* 2 ~i~0) ~j~0) 10) (< ~i~0 46368)), 22207#(and (<= ~j~0 10) (< ~i~0 46368))] [2020-10-16 12:26:36,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:36,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:36,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:36,901 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 12 states. [2020-10-16 12:26:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:37,118 INFO L93 Difference]: Finished difference Result 210 states and 495 transitions. [2020-10-16 12:26:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:37,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:37,120 INFO L225 Difference]: With dead ends: 210 [2020-10-16 12:26:37,121 INFO L226 Difference]: Without dead ends: 205 [2020-10-16 12:26:37,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-16 12:26:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 133. [2020-10-16 12:26:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 331 transitions. [2020-10-16 12:26:37,126 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 331 transitions. Word has length 13 [2020-10-16 12:26:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:37,126 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 331 transitions. [2020-10-16 12:26:37,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 331 transitions. [2020-10-16 12:26:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:37,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:37,127 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:37,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:37,338 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1701696827, now seen corresponding path program 41 times [2020-10-16 12:26:37,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:37,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737190286] [2020-10-16 12:26:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737190286] [2020-10-16 12:26:37,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454188903] [2020-10-16 12:26:37,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:37,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:37,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:37,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:37,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:37,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:37,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:37,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1918047697] [2020-10-16 12:26:37,580 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:37,581 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:37,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:37,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:37,587 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:37,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:37,615 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:37,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:37,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:37,617 INFO L87 Difference]: Start difference. First operand 133 states and 331 transitions. Second operand 9 states. [2020-10-16 12:26:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:37,719 INFO L93 Difference]: Finished difference Result 167 states and 397 transitions. [2020-10-16 12:26:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:26:37,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:37,721 INFO L225 Difference]: With dead ends: 167 [2020-10-16 12:26:37,721 INFO L226 Difference]: Without dead ends: 165 [2020-10-16 12:26:37,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-16 12:26:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-10-16 12:26:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-16 12:26:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 325 transitions. [2020-10-16 12:26:37,725 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 325 transitions. Word has length 13 [2020-10-16 12:26:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:37,725 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 325 transitions. [2020-10-16 12:26:37,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 325 transitions. [2020-10-16 12:26:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:37,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:37,726 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:37,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:37,927 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1702359917, now seen corresponding path program 42 times [2020-10-16 12:26:37,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:37,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435898240] [2020-10-16 12:26:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435898240] [2020-10-16 12:26:38,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615183318] [2020-10-16 12:26:38,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:38,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:38,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:38,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:38,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:38,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [91816893] [2020-10-16 12:26:38,177 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:38,178 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:38,180 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-10-16 12:26:38,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:38,187 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:38,187 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,213 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:38,214 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,257 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23237#(and (<= ~j~0 6) (< ~i~0 46368))] [2020-10-16 12:26:38,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:38,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:38,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:38,257 INFO L87 Difference]: Start difference. First operand 131 states and 325 transitions. Second operand 10 states. [2020-10-16 12:26:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:38,405 INFO L93 Difference]: Finished difference Result 194 states and 459 transitions. [2020-10-16 12:26:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:38,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:38,408 INFO L225 Difference]: With dead ends: 194 [2020-10-16 12:26:38,408 INFO L226 Difference]: Without dead ends: 189 [2020-10-16 12:26:38,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:26:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-16 12:26:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 132. [2020-10-16 12:26:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:38,413 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:38,413 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:38,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:38,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:38,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:38,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:38,625 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283438, now seen corresponding path program 43 times [2020-10-16 12:26:38,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:38,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917514358] [2020-10-16 12:26:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917514358] [2020-10-16 12:26:38,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499370874] [2020-10-16 12:26:38,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:38,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:38,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:38,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [997187802] [2020-10-16 12:26:38,936 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:38,937 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:38,938 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:38,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:38,959 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:38,959 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:38,988 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [23757#(and (<= ~j~0 11) (< ~i~0 46368))] [2020-10-16 12:26:38,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:38,989 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 10 states. [2020-10-16 12:26:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:39,241 INFO L93 Difference]: Finished difference Result 200 states and 475 transitions. [2020-10-16 12:26:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:39,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:39,243 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:39,243 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 12:26:39,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 12:26:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 132. [2020-10-16 12:26:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:39,247 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:39,248 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:39,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:39,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:39,248 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:39,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 12:26:39,449 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:39,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1730325978, now seen corresponding path program 44 times [2020-10-16 12:26:39,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:39,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141216022] [2020-10-16 12:26:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141216022] [2020-10-16 12:26:39,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011818436] [2020-10-16 12:26:39,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:39,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:39,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:39,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:39,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:39,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:39,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:39,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188931686] [2020-10-16 12:26:39,683 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:39,685 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:39,686 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:39,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:39,705 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:39,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:39,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:39,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:39,706 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 9 states. [2020-10-16 12:26:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:39,964 INFO L93 Difference]: Finished difference Result 195 states and 451 transitions. [2020-10-16 12:26:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:39,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:39,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:39,970 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:39,970 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 12:26:39,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 12:26:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 135. [2020-10-16 12:26:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 332 transitions. [2020-10-16 12:26:39,973 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 332 transitions. Word has length 13 [2020-10-16 12:26:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:39,973 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 332 transitions. [2020-10-16 12:26:39,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 332 transitions. [2020-10-16 12:26:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:39,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:39,974 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:40,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:40,179 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1730326939, now seen corresponding path program 45 times [2020-10-16 12:26:40,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:40,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314937774] [2020-10-16 12:26:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314937774] [2020-10-16 12:26:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012649912] [2020-10-16 12:26:40,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:40,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:40,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:40,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:40,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:40,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:40,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:40,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [749666894] [2020-10-16 12:26:40,436 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:40,437 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:40,439 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:26:40,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:40,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:40,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:40,472 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:40,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:40,503 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [24821#(and (< ~i~0 46368) (<= ~j~0 13)), 24822#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 46368))] [2020-10-16 12:26:40,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:40,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:40,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:40,505 INFO L87 Difference]: Start difference. First operand 135 states and 332 transitions. Second operand 11 states. [2020-10-16 12:26:40,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:40,823 INFO L93 Difference]: Finished difference Result 195 states and 465 transitions. [2020-10-16 12:26:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:40,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:40,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:40,825 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:40,825 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:40,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 133. [2020-10-16 12:26:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-16 12:26:40,830 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-16 12:26:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:40,830 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-16 12:26:40,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-16 12:26:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:40,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:40,831 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:41,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 12:26:41,032 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1730989068, now seen corresponding path program 46 times [2020-10-16 12:26:41,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:41,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226166607] [2020-10-16 12:26:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226166607] [2020-10-16 12:26:41,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200612802] [2020-10-16 12:26:41,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:41,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:41,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:41,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:41,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [883198912] [2020-10-16 12:26:41,265 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:41,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:41,268 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:41,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:41,279 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:41,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:41,304 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25353#(and (<= ~j~0 11) (< ~i~0 46368))] [2020-10-16 12:26:41,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:41,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:41,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:41,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:41,305 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 10 states. [2020-10-16 12:26:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:41,614 INFO L93 Difference]: Finished difference Result 195 states and 466 transitions. [2020-10-16 12:26:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:41,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:41,617 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:41,617 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:41,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:41,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 133. [2020-10-16 12:26:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-16 12:26:41,621 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-16 12:26:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:41,621 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-16 12:26:41,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-16 12:26:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:41,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:41,622 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:41,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 12:26:41,831 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1731912589, now seen corresponding path program 47 times [2020-10-16 12:26:41,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:41,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184635726] [2020-10-16 12:26:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184635726] [2020-10-16 12:26:41,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543306608] [2020-10-16 12:26:41,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:41,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:41,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:41,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:42,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:42,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [844941980] [2020-10-16 12:26:42,083 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:42,084 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:42,086 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:42,086 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:42,093 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:42,094 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:42,118 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [25884#(and (<= ~j~0 12) (< ~i~0 46368))] [2020-10-16 12:26:42,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:42,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:42,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:42,120 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 10 states. [2020-10-16 12:26:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:42,442 INFO L93 Difference]: Finished difference Result 190 states and 453 transitions. [2020-10-16 12:26:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:42,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:42,445 INFO L225 Difference]: With dead ends: 190 [2020-10-16 12:26:42,445 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 12:26:42,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 12:26:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 132. [2020-10-16 12:26:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:42,449 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:42,449 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:42,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:42,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:42,450 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:42,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:42,651 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1726322578, now seen corresponding path program 48 times [2020-10-16 12:26:42,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:42,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403594124] [2020-10-16 12:26:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403594124] [2020-10-16 12:26:42,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769819409] [2020-10-16 12:26:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:42,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:42,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:42,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:42,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:42,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:42,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1925639893] [2020-10-16 12:26:42,904 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:42,906 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:42,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:42,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:42,916 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:42,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:42,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:42,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:42,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:42,917 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 9 states. [2020-10-16 12:26:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:43,194 INFO L93 Difference]: Finished difference Result 190 states and 438 transitions. [2020-10-16 12:26:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:43,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:43,197 INFO L225 Difference]: With dead ends: 190 [2020-10-16 12:26:43,197 INFO L226 Difference]: Without dead ends: 188 [2020-10-16 12:26:43,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:26:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-16 12:26:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 135. [2020-10-16 12:26:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 12:26:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 330 transitions. [2020-10-16 12:26:43,201 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 330 transitions. Word has length 13 [2020-10-16 12:26:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 330 transitions. [2020-10-16 12:26:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 330 transitions. [2020-10-16 12:26:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:43,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:43,202 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:43,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 12:26:43,406 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:43,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1726321617, now seen corresponding path program 49 times [2020-10-16 12:26:43,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:43,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999648780] [2020-10-16 12:26:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999648780] [2020-10-16 12:26:43,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689629521] [2020-10-16 12:26:43,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:43,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:43,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:43,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:43,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:43,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [277952451] [2020-10-16 12:26:43,691 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:43,692 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:43,694 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:43,694 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:43,708 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:43,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:43,709 INFO L87 Difference]: Start difference. First operand 135 states and 330 transitions. Second operand 9 states. [2020-10-16 12:26:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:43,985 INFO L93 Difference]: Finished difference Result 193 states and 444 transitions. [2020-10-16 12:26:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:43,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:43,987 INFO L225 Difference]: With dead ends: 193 [2020-10-16 12:26:43,987 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:26:43,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:26:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 136. [2020-10-16 12:26:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 332 transitions. [2020-10-16 12:26:43,992 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 332 transitions. Word has length 13 [2020-10-16 12:26:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:43,992 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 332 transitions. [2020-10-16 12:26:43,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 332 transitions. [2020-10-16 12:26:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:43,993 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:44,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:44,204 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1726292787, now seen corresponding path program 50 times [2020-10-16 12:26:44,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:44,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990345201] [2020-10-16 12:26:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990345201] [2020-10-16 12:26:44,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102069168] [2020-10-16 12:26:44,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:44,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:44,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:44,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:44,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:44,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1825993235] [2020-10-16 12:26:44,449 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:44,450 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:44,451 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:44,451 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:44,452 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:44,452 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:44,489 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27469#(and (<= (+ ~i~0 (* 2 ~j~0)) 13) (< ~i~0 46368))] [2020-10-16 12:26:44,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:44,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:44,490 INFO L87 Difference]: Start difference. First operand 136 states and 332 transitions. Second operand 10 states. [2020-10-16 12:26:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:44,817 INFO L93 Difference]: Finished difference Result 200 states and 464 transitions. [2020-10-16 12:26:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:26:44,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:44,819 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:44,819 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:44,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 136. [2020-10-16 12:26:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:44,823 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:44,823 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:44,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:44,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:44,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:45,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-16 12:26:45,025 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:45,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1705766788, now seen corresponding path program 51 times [2020-10-16 12:26:45,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:45,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456001342] [2020-10-16 12:26:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456001342] [2020-10-16 12:26:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72528370] [2020-10-16 12:26:45,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:45,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:45,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:45,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:45,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:45,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:45,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1808540415] [2020-10-16 12:26:45,283 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:45,284 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:45,286 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 21 transitions. [2020-10-16 12:26:45,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:45,298 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:45,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:45,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:45,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:45,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:45,299 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 9 states. [2020-10-16 12:26:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:45,629 INFO L93 Difference]: Finished difference Result 191 states and 448 transitions. [2020-10-16 12:26:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:26:45,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:45,631 INFO L225 Difference]: With dead ends: 191 [2020-10-16 12:26:45,631 INFO L226 Difference]: Without dead ends: 189 [2020-10-16 12:26:45,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-16 12:26:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 136. [2020-10-16 12:26:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:45,635 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:45,635 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:45,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:45,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:45,636 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:45,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:45,837 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1705765827, now seen corresponding path program 52 times [2020-10-16 12:26:45,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:45,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441749393] [2020-10-16 12:26:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:45,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441749393] [2020-10-16 12:26:45,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295814082] [2020-10-16 12:26:45,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:45,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:45,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:46,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:46,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [722383100] [2020-10-16 12:26:46,080 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:46,081 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:46,082 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:46,082 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:46,083 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:46,131 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:46,162 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [28549#(and (<= ~j~0 12) (< ~i~0 46368)), 28550#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 12))] [2020-10-16 12:26:46,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:46,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:46,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:46,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:46,163 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 11 states. [2020-10-16 12:26:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:46,508 INFO L93 Difference]: Finished difference Result 197 states and 473 transitions. [2020-10-16 12:26:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:46,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:46,510 INFO L225 Difference]: With dead ends: 197 [2020-10-16 12:26:46,510 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 12:26:46,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 12:26:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 136. [2020-10-16 12:26:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:46,515 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:46,516 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:46,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:46,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:46,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:46,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-16 12:26:46,721 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:46,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1705103698, now seen corresponding path program 53 times [2020-10-16 12:26:46,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:46,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842486059] [2020-10-16 12:26:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842486059] [2020-10-16 12:26:46,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381626697] [2020-10-16 12:26:46,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:46,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:46,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:46,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:46,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:46,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:46,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:46,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050720601] [2020-10-16 12:26:46,972 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:46,973 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:46,975 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:46,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:46,985 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:46,985 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,008 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [29091#(and (< ~i~0 46368) (<= ~j~0 9))] [2020-10-16 12:26:47,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:47,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:47,010 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 10 states. [2020-10-16 12:26:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:47,380 INFO L93 Difference]: Finished difference Result 195 states and 470 transitions. [2020-10-16 12:26:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:47,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:47,383 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:47,383 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:47,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 136. [2020-10-16 12:26:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 12:26:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 334 transitions. [2020-10-16 12:26:47,387 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 334 transitions. Word has length 13 [2020-10-16 12:26:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:47,387 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 334 transitions. [2020-10-16 12:26:47,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 334 transitions. [2020-10-16 12:26:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:47,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:47,388 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:47,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:47,589 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:47,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1704842306, now seen corresponding path program 54 times [2020-10-16 12:26:47,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:47,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30298182] [2020-10-16 12:26:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30298182] [2020-10-16 12:26:47,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083164979] [2020-10-16 12:26:47,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:47,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:47,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:47,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:47,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:47,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:47,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:47,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216526987] [2020-10-16 12:26:47,832 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:47,834 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:47,835 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:47,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:47,843 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:47,843 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,868 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:47,868 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:47,921 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [29632#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (= ULTIMATE.start_main_~condI~0 0)), 29630#(and (<= ~j~0 11) (< ~i~0 46368)), 29631#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 46368))] [2020-10-16 12:26:47,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:26:47,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:47,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:26:47,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:47,922 INFO L87 Difference]: Start difference. First operand 136 states and 334 transitions. Second operand 12 states. [2020-10-16 12:26:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:48,274 INFO L93 Difference]: Finished difference Result 195 states and 467 transitions. [2020-10-16 12:26:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:48,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-16 12:26:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:48,277 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:48,277 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:48,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:26:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:48,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 133. [2020-10-16 12:26:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 12:26:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-16 12:26:48,281 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-16 12:26:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:48,281 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-16 12:26:48,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:26:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-16 12:26:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:48,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:48,282 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:48,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-10-16 12:26:48,493 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1704180177, now seen corresponding path program 55 times [2020-10-16 12:26:48,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:48,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250098617] [2020-10-16 12:26:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250098617] [2020-10-16 12:26:48,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135881579] [2020-10-16 12:26:48,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:48,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:48,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:48,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:48,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:48,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [510439484] [2020-10-16 12:26:48,727 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:48,728 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:48,730 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:48,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:48,750 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:48,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:48,793 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [30165#(and (< ~i~0 46368) (<= ~j~0 13))] [2020-10-16 12:26:48,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:48,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:48,794 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 10 states. [2020-10-16 12:26:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:49,182 INFO L93 Difference]: Finished difference Result 191 states and 459 transitions. [2020-10-16 12:26:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:49,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:49,184 INFO L225 Difference]: With dead ends: 191 [2020-10-16 12:26:49,185 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 12:26:49,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 12:26:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 132. [2020-10-16 12:26:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:49,188 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:49,188 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:49,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:49,189 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:49,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:49,391 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1677137637, now seen corresponding path program 56 times [2020-10-16 12:26:49,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:49,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309400050] [2020-10-16 12:26:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309400050] [2020-10-16 12:26:49,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480161161] [2020-10-16 12:26:49,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:49,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:49,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:49,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:49,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:49,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:49,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772869437] [2020-10-16 12:26:49,664 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:49,665 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:49,667 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-16 12:26:49,667 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:49,677 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:49,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:26:49,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:26:49,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:26:49,678 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 9 states. [2020-10-16 12:26:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:50,027 INFO L93 Difference]: Finished difference Result 200 states and 457 transitions. [2020-10-16 12:26:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:26:50,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-10-16 12:26:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:50,029 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:50,029 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:50,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 134. [2020-10-16 12:26:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 12:26:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 327 transitions. [2020-10-16 12:26:50,032 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 327 transitions. Word has length 13 [2020-10-16 12:26:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:50,034 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 327 transitions. [2020-10-16 12:26:50,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:26:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 327 transitions. [2020-10-16 12:26:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:50,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:50,034 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:50,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-10-16 12:26:50,235 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1677136676, now seen corresponding path program 57 times [2020-10-16 12:26:50,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:50,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301816348] [2020-10-16 12:26:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301816348] [2020-10-16 12:26:50,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882284865] [2020-10-16 12:26:50,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:50,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:26:50,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:50,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:50,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:50,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1364824176] [2020-10-16 12:26:50,528 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:50,528 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:50,530 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:50,531 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:50,543 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:50,544 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:50,570 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:50,570 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:50,603 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [31232#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 46368)), 31231#(and (<= ~j~0 11) (< ~i~0 46368))] [2020-10-16 12:26:50,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:26:50,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:50,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:26:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:50,604 INFO L87 Difference]: Start difference. First operand 134 states and 327 transitions. Second operand 11 states. [2020-10-16 12:26:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:50,964 INFO L93 Difference]: Finished difference Result 196 states and 459 transitions. [2020-10-16 12:26:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:50,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-10-16 12:26:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:50,967 INFO L225 Difference]: With dead ends: 196 [2020-10-16 12:26:50,967 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:26:50,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:26:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:26:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 132. [2020-10-16 12:26:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:50,971 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:50,971 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:50,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:26:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:50,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:50,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:51,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-16 12:26:51,172 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1676474547, now seen corresponding path program 58 times [2020-10-16 12:26:51,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:51,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158677225] [2020-10-16 12:26:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158677225] [2020-10-16 12:26:51,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054345370] [2020-10-16 12:26:51,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:51,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:51,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:51,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:51,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:51,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:51,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:51,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [97149316] [2020-10-16 12:26:51,434 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:51,435 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:51,436 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:26:51,436 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:51,448 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:51,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:51,482 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [31764#(and (<= ~j~0 10) (< ~i~0 46368))] [2020-10-16 12:26:51,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:51,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:51,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:51,483 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 10 states. [2020-10-16 12:26:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:51,862 INFO L93 Difference]: Finished difference Result 195 states and 458 transitions. [2020-10-16 12:26:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:51,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:51,865 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:26:51,865 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:26:51,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:26:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 132. [2020-10-16 12:26:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 12:26:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 319 transitions. [2020-10-16 12:26:51,868 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 319 transitions. Word has length 13 [2020-10-16 12:26:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:51,869 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 319 transitions. [2020-10-16 12:26:51,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 319 transitions. [2020-10-16 12:26:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:51,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:51,869 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:52,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-10-16 12:26:52,070 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1675551026, now seen corresponding path program 59 times [2020-10-16 12:26:52,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:52,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451334774] [2020-10-16 12:26:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451334774] [2020-10-16 12:26:52,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330756910] [2020-10-16 12:26:52,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:52,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:26:52,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:52,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:26:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:52,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:52,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 12:26:52,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [398639829] [2020-10-16 12:26:52,339 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:52,340 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:52,342 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:52,342 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:52,358 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:52,358 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:52,384 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [32295#(and (< ~i~0 46368) (<= ~j~0 9))] [2020-10-16 12:26:52,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:52,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:26:52,386 INFO L87 Difference]: Start difference. First operand 132 states and 319 transitions. Second operand 10 states. [2020-10-16 12:26:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:52,770 INFO L93 Difference]: Finished difference Result 189 states and 441 transitions. [2020-10-16 12:26:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:26:52,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:52,772 INFO L225 Difference]: With dead ends: 189 [2020-10-16 12:26:52,772 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:26:52,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:26:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:26:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2020-10-16 12:26:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 12:26:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-16 12:26:52,779 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-16 12:26:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:52,779 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-16 12:26:52,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-16 12:26:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:52,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:52,780 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:52,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:52,991 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1141268816, now seen corresponding path program 6 times [2020-10-16 12:26:52,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:52,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665358751] [2020-10-16 12:26:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665358751] [2020-10-16 12:26:53,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103891354] [2020-10-16 12:26:53,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:53,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:53,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:53,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:53,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:26:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:53,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 12:26:53,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [839573847] [2020-10-16 12:26:53,287 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:53,289 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:53,291 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-16 12:26:53,291 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:53,307 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:53,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:53,308 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 10 states. [2020-10-16 12:26:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:53,478 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-16 12:26:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:53,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-16 12:26:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:53,480 INFO L225 Difference]: With dead ends: 185 [2020-10-16 12:26:53,480 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 12:26:53,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:26:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 12:26:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-16 12:26:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 12:26:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-16 12:26:53,484 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-16 12:26:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:53,484 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-16 12:26:53,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-16 12:26:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:26:53,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:53,485 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:53,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:53,694 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 33766584, now seen corresponding path program 6 times [2020-10-16 12:26:53,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:53,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601903274] [2020-10-16 12:26:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601903274] [2020-10-16 12:26:53,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319320208] [2020-10-16 12:26:53,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:53,826 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:26:53,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:53,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:53,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:53,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:53,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [736300688] [2020-10-16 12:26:53,970 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:53,971 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:53,972 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-10-16 12:26:53,972 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:53,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:53,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,001 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:54,002 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,033 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:54,033 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,063 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:54,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,097 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:54,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,130 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:26:54,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:54,174 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [33349#(and (<= ~j~0 7) (< ~i~0 46368)), 33350#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 7)), 33351#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 7)), 33352#(and (<= (+ (* 3 ~i~0) ~j~0) 7) (< ~i~0 46368)), 33353#(and (<= (+ (* 4 ~i~0) ~j~0) 7) (< ~i~0 46368)), 33354#(and (<= (+ (* 5 ~i~0) ~j~0) 7) (< ~i~0 46368))] [2020-10-16 12:26:54,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:26:54,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:26:54,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:26:54,175 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 16 states. [2020-10-16 12:26:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:54,634 INFO L93 Difference]: Finished difference Result 217 states and 519 transitions. [2020-10-16 12:26:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:26:54,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-16 12:26:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:54,637 INFO L225 Difference]: With dead ends: 217 [2020-10-16 12:26:54,637 INFO L226 Difference]: Without dead ends: 211 [2020-10-16 12:26:54,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 12:26:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-16 12:26:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 150. [2020-10-16 12:26:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:26:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 377 transitions. [2020-10-16 12:26:54,644 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 377 transitions. Word has length 13 [2020-10-16 12:26:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:54,644 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 377 transitions. [2020-10-16 12:26:54,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:26:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 377 transitions. [2020-10-16 12:26:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:54,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:54,646 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:54,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:54,859 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:54,860 INFO L82 PathProgramCache]: Analyzing trace with hash -195697579, now seen corresponding path program 60 times [2020-10-16 12:26:54,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:54,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961876548] [2020-10-16 12:26:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:54,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961876548] [2020-10-16 12:26:54,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326056176] [2020-10-16 12:26:54,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:54,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:26:54,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:54,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:55,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2062249251] [2020-10-16 12:26:55,154 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:55,156 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:55,159 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-10-16 12:26:55,159 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:55,179 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,185 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,185 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,190 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:55,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:55,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:55,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:55,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:55,191 INFO L87 Difference]: Start difference. First operand 150 states and 377 transitions. Second operand 10 states. [2020-10-16 12:26:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:55,247 INFO L93 Difference]: Finished difference Result 187 states and 451 transitions. [2020-10-16 12:26:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:55,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:55,249 INFO L225 Difference]: With dead ends: 187 [2020-10-16 12:26:55,249 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 12:26:55,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 12:26:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 158. [2020-10-16 12:26:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:26:55,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 401 transitions. [2020-10-16 12:26:55,252 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 401 transitions. Word has length 14 [2020-10-16 12:26:55,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:55,253 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 401 transitions. [2020-10-16 12:26:55,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:55,253 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 401 transitions. [2020-10-16 12:26:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:55,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:55,254 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:55,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-16 12:26:55,454 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash -195696618, now seen corresponding path program 61 times [2020-10-16 12:26:55,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:55,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022966586] [2020-10-16 12:26:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022966586] [2020-10-16 12:26:55,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171746351] [2020-10-16 12:26:55,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:55,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:55,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:55,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:55,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1132522044] [2020-10-16 12:26:55,777 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:55,779 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:55,781 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:26:55,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:55,796 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,797 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,804 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:55,805 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:55,812 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:55,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:55,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:55,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:55,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:55,812 INFO L87 Difference]: Start difference. First operand 158 states and 401 transitions. Second operand 10 states. [2020-10-16 12:26:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:55,901 INFO L93 Difference]: Finished difference Result 196 states and 469 transitions. [2020-10-16 12:26:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:55,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:55,903 INFO L225 Difference]: With dead ends: 196 [2020-10-16 12:26:55,903 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 12:26:55,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:26:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 12:26:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 156. [2020-10-16 12:26:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:26:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:26:55,908 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:26:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:55,909 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:26:55,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:26:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:55,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:55,909 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:56,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:56,110 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash -195667788, now seen corresponding path program 62 times [2020-10-16 12:26:56,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:56,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688762594] [2020-10-16 12:26:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688762594] [2020-10-16 12:26:56,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948030529] [2020-10-16 12:26:56,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:56,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:56,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:56,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:56,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:56,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:56,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [627822012] [2020-10-16 12:26:56,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:56,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:56,466 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:56,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:56,473 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:56,474 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:56,484 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:56,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:56,491 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:56,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:56,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:56,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:56,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:56,492 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:26:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:56,607 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:26:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:56,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:56,610 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:56,610 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:56,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 157. [2020-10-16 12:26:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:26:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 398 transitions. [2020-10-16 12:26:56,614 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 398 transitions. Word has length 14 [2020-10-16 12:26:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:56,614 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 398 transitions. [2020-10-16 12:26:56,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 398 transitions. [2020-10-16 12:26:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:56,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:56,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:56,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:56,815 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:56,816 INFO L82 PathProgramCache]: Analyzing trace with hash -195666827, now seen corresponding path program 63 times [2020-10-16 12:26:56,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:56,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747936290] [2020-10-16 12:26:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:56,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747936290] [2020-10-16 12:26:56,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119573013] [2020-10-16 12:26:56,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:56,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:26:56,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:56,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:56,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:57,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:57,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:57,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [175573420] [2020-10-16 12:26:57,268 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:57,270 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:57,274 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-10-16 12:26:57,274 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:57,287 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:57,287 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:57,301 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:57,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:57,310 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:57,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:57,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:57,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:57,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:57,311 INFO L87 Difference]: Start difference. First operand 157 states and 398 transitions. Second operand 10 states. [2020-10-16 12:26:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:57,455 INFO L93 Difference]: Finished difference Result 200 states and 478 transitions. [2020-10-16 12:26:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:57,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:57,458 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:26:57,459 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:26:57,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:26:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:26:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 154. [2020-10-16 12:26:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:26:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:26:57,465 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:26:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:57,466 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:26:57,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:26:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:57,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:57,467 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:57,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:26:57,681 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash -194774058, now seen corresponding path program 64 times [2020-10-16 12:26:57,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:57,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258916381] [2020-10-16 12:26:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:57,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258916381] [2020-10-16 12:26:57,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153226374] [2020-10-16 12:26:57,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:57,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:26:57,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:57,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:57,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:58,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:58,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:26:58,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [25323543] [2020-10-16 12:26:58,190 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:58,191 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:58,195 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:26:58,195 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:58,202 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:58,203 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:58,226 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:26:58,226 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:26:58,233 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:58,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:26:58,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:58,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:26:58,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:26:58,234 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:26:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:58,388 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:26:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:26:58,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:26:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:58,391 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:26:58,391 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:26:58,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:26:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:26:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2020-10-16 12:26:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:26:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:26:58,395 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:26:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:58,396 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:26:58,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:26:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:26:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:26:58,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:58,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:58,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-10-16 12:26:58,609 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:26:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:58,609 INFO L82 PathProgramCache]: Analyzing trace with hash -194773097, now seen corresponding path program 65 times [2020-10-16 12:26:58,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:58,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446503832] [2020-10-16 12:26:58,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:58,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446503832] [2020-10-16 12:26:58,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120459045] [2020-10-16 12:26:58,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:58,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:26:58,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:58,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:26:58,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:02,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:02,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1008666005] [2020-10-16 12:27:02,764 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,765 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:27:02,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,775 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,788 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:02,788 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:02,794 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:02,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:02,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-16 12:27:02,795 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:27:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,952 INFO L93 Difference]: Finished difference Result 201 states and 479 transitions. [2020-10-16 12:27:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:02,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,954 INFO L225 Difference]: With dead ends: 201 [2020-10-16 12:27:02,954 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 12:27:02,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=255, Unknown=1, NotChecked=0, Total=380 [2020-10-16 12:27:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 12:27:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2020-10-16 12:27:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:02,958 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,958 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:02,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:02,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,161 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash -194744267, now seen corresponding path program 66 times [2020-10-16 12:27:03,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031620736] [2020-10-16 12:27:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031620736] [2020-10-16 12:27:03,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956324744] [2020-10-16 12:27:03,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:03,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:03,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:03,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:03,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:03,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:03,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1430658924] [2020-10-16 12:27:03,565 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,566 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,568 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:27:03,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,571 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,571 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,582 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:03,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:03,589 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:03,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:03,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:03,591 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,737 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:27:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:03,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,739 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:27:03,739 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:27:03,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:27:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2020-10-16 12:27:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:27:03,744 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:27:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,744 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:27:03,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:27:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:03,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,745 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,946 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash -194743306, now seen corresponding path program 67 times [2020-10-16 12:27:03,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553957306] [2020-10-16 12:27:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553957306] [2020-10-16 12:27:04,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506481523] [2020-10-16 12:27:04,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:04,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [368906255] [2020-10-16 12:27:04,291 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,292 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,294 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 12:27:04,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,300 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,320 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:04,326 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:04,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:04,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:04,328 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 10 states. [2020-10-16 12:27:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:04,475 INFO L93 Difference]: Finished difference Result 201 states and 480 transitions. [2020-10-16 12:27:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:04,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:04,476 INFO L225 Difference]: With dead ends: 201 [2020-10-16 12:27:04,476 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 12:27:04,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 12:27:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 152. [2020-10-16 12:27:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:27:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 383 transitions. [2020-10-16 12:27:04,479 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 383 transitions. Word has length 14 [2020-10-16 12:27:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:04,480 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 383 transitions. [2020-10-16 12:27:04,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 383 transitions. [2020-10-16 12:27:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:04,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:04,480 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-16 12:27:04,681 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -167068428, now seen corresponding path program 68 times [2020-10-16 12:27:04,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303874078] [2020-10-16 12:27:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303874078] [2020-10-16 12:27:04,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550522777] [2020-10-16 12:27:04,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:04,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:04,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:04,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:04,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1478943438] [2020-10-16 12:27:04,992 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,993 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,994 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:04,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,998 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:04,998 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,008 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,008 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,013 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:05,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:05,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:05,014 INFO L87 Difference]: Start difference. First operand 152 states and 383 transitions. Second operand 10 states. [2020-10-16 12:27:05,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,185 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2020-10-16 12:27:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:05,186 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,188 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:27:05,188 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 12:27:05,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 12:27:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2020-10-16 12:27:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:05,192 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,192 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:05,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:05,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:05,393 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:05,394 INFO L82 PathProgramCache]: Analyzing trace with hash -167067467, now seen corresponding path program 69 times [2020-10-16 12:27:05,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:05,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307604963] [2020-10-16 12:27:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307604963] [2020-10-16 12:27:05,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360077833] [2020-10-16 12:27:05,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:27:05,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:05,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:05,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [308617191] [2020-10-16 12:27:05,725 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,727 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,729 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:05,729 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,734 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,734 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,748 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:05,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:05,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:05,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:05,758 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,948 INFO L93 Difference]: Finished difference Result 203 states and 483 transitions. [2020-10-16 12:27:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:05,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,951 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:27:05,951 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:27:05,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:27:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 154. [2020-10-16 12:27:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:27:05,955 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:27:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,955 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:27:05,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:27:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:05,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,157 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,157 INFO L82 PathProgramCache]: Analyzing trace with hash -167038637, now seen corresponding path program 70 times [2020-10-16 12:27:06,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098541759] [2020-10-16 12:27:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098541759] [2020-10-16 12:27:06,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240503381] [2020-10-16 12:27:06,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:06,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:06,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:06,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:06,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:06,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:06,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1694965937] [2020-10-16 12:27:06,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:06,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:06,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:06,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:06,470 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,471 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,484 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:06,485 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:06,491 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:06,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:06,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:06,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:06,492 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:27:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,658 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:27:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:06,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,660 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:06,660 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:06,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 155. [2020-10-16 12:27:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:06,664 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,664 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:06,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:06,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,665 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:06,866 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,866 INFO L82 PathProgramCache]: Analyzing trace with hash -167037676, now seen corresponding path program 71 times [2020-10-16 12:27:06,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724691065] [2020-10-16 12:27:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:06,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724691065] [2020-10-16 12:27:06,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483745801] [2020-10-16 12:27:06,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:07,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:07,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1208327180] [2020-10-16 12:27:07,187 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,189 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,191 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:07,192 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,196 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,211 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,220 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:07,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:07,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:07,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:07,222 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:07,417 INFO L93 Difference]: Finished difference Result 205 states and 488 transitions. [2020-10-16 12:27:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:07,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:07,419 INFO L225 Difference]: With dead ends: 205 [2020-10-16 12:27:07,419 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:27:07,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:27:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 153. [2020-10-16 12:27:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 386 transitions. [2020-10-16 12:27:07,424 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 386 transitions. Word has length 14 [2020-10-16 12:27:07,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:07,424 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 386 transitions. [2020-10-16 12:27:07,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 386 transitions. [2020-10-16 12:27:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:07,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:07,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:07,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,635 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash -166144907, now seen corresponding path program 72 times [2020-10-16 12:27:07,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:07,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527706464] [2020-10-16 12:27:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527706464] [2020-10-16 12:27:07,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609673583] [2020-10-16 12:27:07,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:07,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:07,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:07,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [745464096] [2020-10-16 12:27:07,967 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,968 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,970 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:07,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,973 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,985 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:07,985 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:07,991 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:07,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:07,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:07,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:07,992 INFO L87 Difference]: Start difference. First operand 153 states and 386 transitions. Second operand 10 states. [2020-10-16 12:27:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:08,192 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 12:27:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:08,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:08,195 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:08,195 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:08,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 155. [2020-10-16 12:27:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:08,199 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:08,199 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:08,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:08,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:08,200 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:08,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:08,401 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash -166143946, now seen corresponding path program 73 times [2020-10-16 12:27:08,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:08,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606773] [2020-10-16 12:27:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606773] [2020-10-16 12:27:08,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530130985] [2020-10-16 12:27:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:08,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:08,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:08,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:08,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1913194993] [2020-10-16 12:27:08,780 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:08,782 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:08,785 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:08,785 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:08,791 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,791 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,808 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:08,809 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:08,818 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:08,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:08,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:08,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:08,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:08,819 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,015 INFO L93 Difference]: Finished difference Result 203 states and 483 transitions. [2020-10-16 12:27:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:09,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,017 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:27:09,017 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:27:09,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:27:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 154. [2020-10-16 12:27:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:27:09,021 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:27:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,021 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:27:09,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:27:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:09,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,022 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:09,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:09,233 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -166115116, now seen corresponding path program 74 times [2020-10-16 12:27:09,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:09,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508386134] [2020-10-16 12:27:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:09,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508386134] [2020-10-16 12:27:09,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377586006] [2020-10-16 12:27:09,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:09,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:09,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:09,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:09,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:09,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:09,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:09,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1782846742] [2020-10-16 12:27:09,546 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:09,547 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:09,549 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:09,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:09,552 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,552 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,561 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:09,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:09,569 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:09,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:09,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:09,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:09,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:09,570 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 10 states. [2020-10-16 12:27:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,747 INFO L93 Difference]: Finished difference Result 199 states and 477 transitions. [2020-10-16 12:27:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:09,748 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,750 INFO L225 Difference]: With dead ends: 199 [2020-10-16 12:27:09,750 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 12:27:09,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 12:27:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 155. [2020-10-16 12:27:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 392 transitions. [2020-10-16 12:27:09,754 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 392 transitions. Word has length 14 [2020-10-16 12:27:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 392 transitions. [2020-10-16 12:27:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 392 transitions. [2020-10-16 12:27:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:09,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,755 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:09,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 12:27:09,956 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash -166114155, now seen corresponding path program 75 times [2020-10-16 12:27:09,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:09,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315422877] [2020-10-16 12:27:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315422877] [2020-10-16 12:27:10,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914944140] [2020-10-16 12:27:10,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:10,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:10,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:10,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:10,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [741970264] [2020-10-16 12:27:10,265 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:10,267 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:10,269 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-16 12:27:10,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:10,275 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,275 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,288 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:10,288 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:10,295 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:10,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:10,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:10,296 INFO L87 Difference]: Start difference. First operand 155 states and 392 transitions. Second operand 10 states. [2020-10-16 12:27:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:10,484 INFO L93 Difference]: Finished difference Result 200 states and 480 transitions. [2020-10-16 12:27:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:10,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:10,486 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:10,487 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:10,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2020-10-16 12:27:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 384 transitions. [2020-10-16 12:27:10,491 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 384 transitions. Word has length 14 [2020-10-16 12:27:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:10,491 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 384 transitions. [2020-10-16 12:27:10,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 384 transitions. [2020-10-16 12:27:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:10,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:10,491 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:10,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:10,692 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash 691806102, now seen corresponding path program 76 times [2020-10-16 12:27:10,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:10,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718325028] [2020-10-16 12:27:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:10,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718325028] [2020-10-16 12:27:10,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931798593] [2020-10-16 12:27:10,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:10,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:10,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:11,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1410119854] [2020-10-16 12:27:11,015 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,017 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,019 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:11,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,039 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:11,040 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,071 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:11,072 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,100 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,101 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,107 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:11,107 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:11,116 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43089#(and (<= (+ ~i~0 (* 5 ~j~0)) 11) (< ~i~0 46368))] [2020-10-16 12:27:11,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:11,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:11,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:11,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:11,117 INFO L87 Difference]: Start difference. First operand 153 states and 384 transitions. Second operand 11 states. [2020-10-16 12:27:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:11,403 INFO L93 Difference]: Finished difference Result 217 states and 511 transitions. [2020-10-16 12:27:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:11,404 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:11,406 INFO L225 Difference]: With dead ends: 217 [2020-10-16 12:27:11,406 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 12:27:11,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 12:27:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 161. [2020-10-16 12:27:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 408 transitions. [2020-10-16 12:27:11,411 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 408 transitions. Word has length 14 [2020-10-16 12:27:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:11,411 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 408 transitions. [2020-10-16 12:27:11,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 408 transitions. [2020-10-16 12:27:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:11,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:11,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 12:27:11,618 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash 691807063, now seen corresponding path program 77 times [2020-10-16 12:27:11,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:11,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66165438] [2020-10-16 12:27:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66165438] [2020-10-16 12:27:11,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476670864] [2020-10-16 12:27:11,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:11,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:11,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:11,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:11,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:11,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:11,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [602601897] [2020-10-16 12:27:11,957 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,958 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,960 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:11,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,974 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:11,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,009 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:12,009 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,033 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,047 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:12,047 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:12,056 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [43697#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 7 ~j~0)) 16))] [2020-10-16 12:27:12,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:12,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:12,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:12,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:12,057 INFO L87 Difference]: Start difference. First operand 161 states and 408 transitions. Second operand 11 states. [2020-10-16 12:27:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:12,340 INFO L93 Difference]: Finished difference Result 221 states and 520 transitions. [2020-10-16 12:27:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:12,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:12,342 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:27:12,343 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:27:12,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:27:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 159. [2020-10-16 12:27:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 12:27:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 402 transitions. [2020-10-16 12:27:12,346 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 402 transitions. Word has length 14 [2020-10-16 12:27:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:12,346 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 402 transitions. [2020-10-16 12:27:12,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 402 transitions. [2020-10-16 12:27:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:12,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:12,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:12,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-16 12:27:12,548 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash 691835893, now seen corresponding path program 78 times [2020-10-16 12:27:12,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:12,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144784469] [2020-10-16 12:27:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:12,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144784469] [2020-10-16 12:27:12,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877611006] [2020-10-16 12:27:12,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:12,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:12,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:12,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:13,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1473509496] [2020-10-16 12:27:13,671 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:13,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:13,684 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:13,684 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:13,696 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:13,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,729 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:13,730 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,753 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,754 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,759 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:13,760 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:13,767 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44305#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 8 ~j~0)) 19))] [2020-10-16 12:27:13,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:13,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:13,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:13,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:13,768 INFO L87 Difference]: Start difference. First operand 159 states and 402 transitions. Second operand 11 states. [2020-10-16 12:27:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:14,027 INFO L93 Difference]: Finished difference Result 217 states and 511 transitions. [2020-10-16 12:27:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:14,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:14,030 INFO L225 Difference]: With dead ends: 217 [2020-10-16 12:27:14,030 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 12:27:14,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 12:27:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 160. [2020-10-16 12:27:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:27:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 405 transitions. [2020-10-16 12:27:14,034 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 405 transitions. Word has length 14 [2020-10-16 12:27:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:14,034 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 405 transitions. [2020-10-16 12:27:14,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 405 transitions. [2020-10-16 12:27:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:14,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:14,035 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:14,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:14,235 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 691836854, now seen corresponding path program 79 times [2020-10-16 12:27:14,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:14,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341188454] [2020-10-16 12:27:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:14,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341188454] [2020-10-16 12:27:14,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507620352] [2020-10-16 12:27:14,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:14,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:14,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:14,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:14,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:14,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [954694506] [2020-10-16 12:27:14,570 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:14,571 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:14,573 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:14,574 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:14,585 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:14,585 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,617 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:14,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,643 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,644 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,649 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:14,650 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:14,665 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [44911#(and (<= (+ (* 3 ~i~0) (* 7 ~j~0)) 17) (< ~i~0 46368))] [2020-10-16 12:27:14,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:14,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:14,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:14,666 INFO L87 Difference]: Start difference. First operand 160 states and 405 transitions. Second operand 11 states. [2020-10-16 12:27:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:14,955 INFO L93 Difference]: Finished difference Result 223 states and 525 transitions. [2020-10-16 12:27:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:14,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:14,957 INFO L225 Difference]: With dead ends: 223 [2020-10-16 12:27:14,957 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 12:27:14,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 12:27:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 157. [2020-10-16 12:27:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 396 transitions. [2020-10-16 12:27:14,961 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 396 transitions. Word has length 14 [2020-10-16 12:27:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:14,961 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 396 transitions. [2020-10-16 12:27:14,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 396 transitions. [2020-10-16 12:27:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:14,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:14,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:15,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:15,163 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash 692729623, now seen corresponding path program 80 times [2020-10-16 12:27:15,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:15,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197057338] [2020-10-16 12:27:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:15,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197057338] [2020-10-16 12:27:15,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246413827] [2020-10-16 12:27:15,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:15,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:15,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:15,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:15,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:15,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:15,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [336357372] [2020-10-16 12:27:15,486 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:15,488 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:15,490 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:15,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:15,508 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:15,509 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,542 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:15,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,567 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,567 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,574 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:15,574 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:15,581 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45517#(and (<= (+ (* 4 ~i~0) (* 7 ~j~0)) 18) (< ~i~0 46368))] [2020-10-16 12:27:15,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:15,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:15,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:15,582 INFO L87 Difference]: Start difference. First operand 157 states and 396 transitions. Second operand 11 states. [2020-10-16 12:27:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:15,846 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-16 12:27:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:15,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:15,848 INFO L225 Difference]: With dead ends: 215 [2020-10-16 12:27:15,849 INFO L226 Difference]: Without dead ends: 213 [2020-10-16 12:27:15,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-16 12:27:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 159. [2020-10-16 12:27:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 12:27:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 402 transitions. [2020-10-16 12:27:15,853 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 402 transitions. Word has length 14 [2020-10-16 12:27:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:15,853 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 402 transitions. [2020-10-16 12:27:15,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 402 transitions. [2020-10-16 12:27:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:15,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:15,854 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:16,064 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 692730584, now seen corresponding path program 81 times [2020-10-16 12:27:16,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356412723] [2020-10-16 12:27:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:16,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356412723] [2020-10-16 12:27:16,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12049192] [2020-10-16 12:27:16,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:16,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:16,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:16,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:16,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:16,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:16,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:16,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1589788908] [2020-10-16 12:27:16,389 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:16,391 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:16,393 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:16,393 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:16,412 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:16,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,444 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:16,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,467 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,467 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,474 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:16,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:16,482 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46119#(and (<= (+ (* 5 ~i~0) (* 8 ~j~0)) 21) (< ~i~0 46368))] [2020-10-16 12:27:16,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:16,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:16,483 INFO L87 Difference]: Start difference. First operand 159 states and 402 transitions. Second operand 11 states. [2020-10-16 12:27:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:16,754 INFO L93 Difference]: Finished difference Result 217 states and 512 transitions. [2020-10-16 12:27:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:16,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:16,756 INFO L225 Difference]: With dead ends: 217 [2020-10-16 12:27:16,756 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 12:27:16,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 12:27:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-16 12:27:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:27:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 399 transitions. [2020-10-16 12:27:16,761 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 399 transitions. Word has length 14 [2020-10-16 12:27:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:16,761 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 399 transitions. [2020-10-16 12:27:16,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 399 transitions. [2020-10-16 12:27:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:16,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:16,762 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-16 12:27:16,966 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,966 INFO L82 PathProgramCache]: Analyzing trace with hash 692759414, now seen corresponding path program 82 times [2020-10-16 12:27:16,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14321777] [2020-10-16 12:27:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14321777] [2020-10-16 12:27:17,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162351116] [2020-10-16 12:27:17,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:17,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:17,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:17,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:17,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:17,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:17,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [382396405] [2020-10-16 12:27:17,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:17,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:17,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:17,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:17,302 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:17,302 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,337 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:17,337 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,362 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:17,363 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,369 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:17,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:17,377 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [46721#(and (<= (+ (* 5 ~i~0) (* 7 ~j~0)) 19) (< ~i~0 46368))] [2020-10-16 12:27:17,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:17,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:17,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:17,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:17,378 INFO L87 Difference]: Start difference. First operand 158 states and 399 transitions. Second operand 11 states. [2020-10-16 12:27:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:17,678 INFO L93 Difference]: Finished difference Result 219 states and 516 transitions. [2020-10-16 12:27:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:17,679 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:17,680 INFO L225 Difference]: With dead ends: 219 [2020-10-16 12:27:17,680 INFO L226 Difference]: Without dead ends: 217 [2020-10-16 12:27:17,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:27:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-16 12:27:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 159. [2020-10-16 12:27:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 12:27:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 402 transitions. [2020-10-16 12:27:17,684 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 402 transitions. Word has length 14 [2020-10-16 12:27:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:17,685 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 402 transitions. [2020-10-16 12:27:17,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 402 transitions. [2020-10-16 12:27:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:17,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:17,686 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:17,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:17,887 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash 692760375, now seen corresponding path program 83 times [2020-10-16 12:27:17,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:17,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360112742] [2020-10-16 12:27:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360112742] [2020-10-16 12:27:18,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134515240] [2020-10-16 12:27:18,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:18,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:18,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:18,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:18,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:18,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [442798813] [2020-10-16 12:27:18,217 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:18,218 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:18,220 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-10-16 12:27:18,220 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:18,238 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:18,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,274 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:18,274 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,302 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:18,303 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,309 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:18,309 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:18,315 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [47329#(and (<= (+ (* 4 ~i~0) (* 5 ~j~0)) 14) (< ~i~0 46368))] [2020-10-16 12:27:18,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:18,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:18,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:18,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:18,316 INFO L87 Difference]: Start difference. First operand 159 states and 402 transitions. Second operand 11 states. [2020-10-16 12:27:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:18,607 INFO L93 Difference]: Finished difference Result 220 states and 519 transitions. [2020-10-16 12:27:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:18,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:18,609 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:27:18,609 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 12:27:18,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 12:27:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 155. [2020-10-16 12:27:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 390 transitions. [2020-10-16 12:27:18,613 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 390 transitions. Word has length 14 [2020-10-16 12:27:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:18,614 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 390 transitions. [2020-10-16 12:27:18,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 390 transitions. [2020-10-16 12:27:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:18,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:18,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:18,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-10-16 12:27:18,817 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 720435253, now seen corresponding path program 84 times [2020-10-16 12:27:18,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:18,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358349559] [2020-10-16 12:27:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:18,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358349559] [2020-10-16 12:27:18,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242180890] [2020-10-16 12:27:18,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:19,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:19,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:19,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:19,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:19,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:19,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:19,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1976221455] [2020-10-16 12:27:19,327 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:19,328 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:19,332 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:19,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:19,355 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:19,356 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,409 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:19,409 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,460 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:19,460 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,500 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:19,501 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,545 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:19,545 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,560 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:19,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:19,570 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [47928#(and (< ~i~0 46368) (<= (+ ~i~0 (* 4 ~j~0)) 13)), 47929#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) (* 4 ~j~0)) 13))] [2020-10-16 12:27:19,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:19,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:19,571 INFO L87 Difference]: Start difference. First operand 155 states and 390 transitions. Second operand 12 states. [2020-10-16 12:27:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:20,125 INFO L93 Difference]: Finished difference Result 220 states and 515 transitions. [2020-10-16 12:27:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 12:27:20,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:20,127 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:27:20,127 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 12:27:20,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 12:27:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 157. [2020-10-16 12:27:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 396 transitions. [2020-10-16 12:27:20,132 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 396 transitions. Word has length 14 [2020-10-16 12:27:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:20,132 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 396 transitions. [2020-10-16 12:27:20,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 396 transitions. [2020-10-16 12:27:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:20,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:20,133 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:20,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:20,346 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:20,346 INFO L82 PathProgramCache]: Analyzing trace with hash 720436214, now seen corresponding path program 85 times [2020-10-16 12:27:20,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:20,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283412887] [2020-10-16 12:27:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:20,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283412887] [2020-10-16 12:27:20,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914607926] [2020-10-16 12:27:20,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:21,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:21,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:21,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1840796817] [2020-10-16 12:27:21,373 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:21,374 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:21,378 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:21,378 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:21,379 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:21,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,435 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:21,435 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,471 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:21,472 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,499 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:21,499 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,524 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:21,524 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,529 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:21,530 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:21,539 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [48546#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 5 ~j~0)) 17)), 48547#(and (<= (+ (* 7 ~i~0) (* 5 ~j~0)) 17) (< ~i~0 46368))] [2020-10-16 12:27:21,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:21,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:21,540 INFO L87 Difference]: Start difference. First operand 157 states and 396 transitions. Second operand 12 states. [2020-10-16 12:27:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:22,083 INFO L93 Difference]: Finished difference Result 225 states and 526 transitions. [2020-10-16 12:27:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 12:27:22,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:22,086 INFO L225 Difference]: With dead ends: 225 [2020-10-16 12:27:22,086 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:27:22,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:27:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 156. [2020-10-16 12:27:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 393 transitions. [2020-10-16 12:27:22,090 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 393 transitions. Word has length 14 [2020-10-16 12:27:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:22,090 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 393 transitions. [2020-10-16 12:27:22,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 393 transitions. [2020-10-16 12:27:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:22,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:22,091 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:22,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:22,292 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:22,292 INFO L82 PathProgramCache]: Analyzing trace with hash 720465044, now seen corresponding path program 86 times [2020-10-16 12:27:22,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:22,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724333894] [2020-10-16 12:27:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724333894] [2020-10-16 12:27:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878109144] [2020-10-16 12:27:22,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:22,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:22,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:22,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:26,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:26,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:26,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1264965414] [2020-10-16 12:27:26,657 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:26,658 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:26,660 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:26,660 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:26,661 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:26,661 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,701 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:26,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,737 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:26,737 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,776 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:26,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,778 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:26,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,785 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:26,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:26,793 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49167#(and (<= (+ (* 3 ~i~0) (* 5 ~j~0)) 18) (< ~i~0 46368)), 49168#(and (< ~i~0 46368) (<= (+ (* 8 ~i~0) (* 5 ~j~0)) 18))] [2020-10-16 12:27:26,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:26,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:26,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=254, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:27:26,794 INFO L87 Difference]: Start difference. First operand 156 states and 393 transitions. Second operand 12 states. [2020-10-16 12:27:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:27,192 INFO L93 Difference]: Finished difference Result 214 states and 503 transitions. [2020-10-16 12:27:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:27,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:27,195 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:27:27,195 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 12:27:27,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=199, Invalid=556, Unknown=1, NotChecked=0, Total=756 [2020-10-16 12:27:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 12:27:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 157. [2020-10-16 12:27:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 396 transitions. [2020-10-16 12:27:27,200 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 396 transitions. Word has length 14 [2020-10-16 12:27:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:27,201 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 396 transitions. [2020-10-16 12:27:27,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 396 transitions. [2020-10-16 12:27:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:27,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:27,202 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:27,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 12:27:27,415 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:27,415 INFO L82 PathProgramCache]: Analyzing trace with hash 720466005, now seen corresponding path program 87 times [2020-10-16 12:27:27,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:27,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641125038] [2020-10-16 12:27:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641125038] [2020-10-16 12:27:27,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163942705] [2020-10-16 12:27:27,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:27,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:27,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:27,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:27,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:27,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:27,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1602381250] [2020-10-16 12:27:27,797 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:27,798 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:27,801 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-16 12:27:27,802 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:27,803 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,803 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,862 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,862 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,910 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,910 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,951 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:27,951 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,957 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:27,958 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,970 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:27,970 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:27,979 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49771#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 4 ~j~0)) 15)), 49772#(and (<= (+ (* 7 ~i~0) (* 4 ~j~0)) 15) (< ~i~0 46368))] [2020-10-16 12:27:27,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:27,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:27,981 INFO L87 Difference]: Start difference. First operand 157 states and 396 transitions. Second operand 12 states. [2020-10-16 12:27:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:28,411 INFO L93 Difference]: Finished difference Result 221 states and 519 transitions. [2020-10-16 12:27:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:28,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:28,413 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:27:28,413 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:27:28,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:27:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 155. [2020-10-16 12:27:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 390 transitions. [2020-10-16 12:27:28,418 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 390 transitions. Word has length 14 [2020-10-16 12:27:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:28,419 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 390 transitions. [2020-10-16 12:27:28,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 390 transitions. [2020-10-16 12:27:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:28,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:28,419 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:28,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2020-10-16 12:27:28,620 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash 721358774, now seen corresponding path program 88 times [2020-10-16 12:27:28,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:28,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483251227] [2020-10-16 12:27:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483251227] [2020-10-16 12:27:28,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063322639] [2020-10-16 12:27:28,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:28,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:28,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:28,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:28,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:28,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:28,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:28,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [883892431] [2020-10-16 12:27:28,968 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:28,969 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:28,973 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 48 transitions. [2020-10-16 12:27:28,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:28,987 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:28,988 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,022 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,056 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,057 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,097 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,121 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,126 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:29,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,131 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:29,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,137 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:29,138 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:29,147 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [50380#(and (< ~i~0 46368) (<= (+ ~i~0 (* 3 ~j~0)) 13)), 50381#(and (< ~i~0 46368) (<= (+ (* 4 ~i~0) (* 3 ~j~0)) 13)), 50382#(and (<= (+ (* 7 ~i~0) (* 3 ~j~0)) 13) (< ~i~0 46368))] [2020-10-16 12:27:29,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:29,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:29,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:29,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:29,148 INFO L87 Difference]: Start difference. First operand 155 states and 390 transitions. Second operand 13 states. [2020-10-16 12:27:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:29,612 INFO L93 Difference]: Finished difference Result 234 states and 545 transitions. [2020-10-16 12:27:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:29,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:29,614 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:27:29,614 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:27:29,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:27:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 156. [2020-10-16 12:27:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 393 transitions. [2020-10-16 12:27:29,619 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 393 transitions. Word has length 14 [2020-10-16 12:27:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:29,619 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 393 transitions. [2020-10-16 12:27:29,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 393 transitions. [2020-10-16 12:27:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:29,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:29,620 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:29,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:29,830 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash 721359735, now seen corresponding path program 89 times [2020-10-16 12:27:29,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:29,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293700444] [2020-10-16 12:27:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:29,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293700444] [2020-10-16 12:27:29,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113080976] [2020-10-16 12:27:29,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:29,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:29,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:29,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:29,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:30,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:30,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:30,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144160568] [2020-10-16 12:27:30,164 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:30,165 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:30,168 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 48 transitions. [2020-10-16 12:27:30,168 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:30,179 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,214 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,240 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,240 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,274 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,274 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,308 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,308 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,311 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:30,311 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,323 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:30,323 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,328 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:30,328 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:30,336 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [51009#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 14)), 51010#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) (* 3 ~j~0)) 14)), 51011#(and (< ~i~0 46368) (<= (+ (* 8 ~i~0) (* 3 ~j~0)) 14))] [2020-10-16 12:27:30,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:30,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:30,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:30,337 INFO L87 Difference]: Start difference. First operand 156 states and 393 transitions. Second operand 13 states. [2020-10-16 12:27:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:30,815 INFO L93 Difference]: Finished difference Result 230 states and 537 transitions. [2020-10-16 12:27:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:30,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:30,817 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:27:30,817 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:27:30,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:27:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 155. [2020-10-16 12:27:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:27:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 390 transitions. [2020-10-16 12:27:30,821 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 390 transitions. Word has length 14 [2020-10-16 12:27:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:30,822 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 390 transitions. [2020-10-16 12:27:30,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 390 transitions. [2020-10-16 12:27:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:30,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:30,832 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:31,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 12:27:31,033 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash 721388565, now seen corresponding path program 90 times [2020-10-16 12:27:31,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:31,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145343403] [2020-10-16 12:27:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145343403] [2020-10-16 12:27:31,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444722016] [2020-10-16 12:27:31,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:31,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:31,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:31,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:31,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:31,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:31,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:31,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1179207907] [2020-10-16 12:27:31,443 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:31,446 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:31,452 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 55 transitions. [2020-10-16 12:27:31,452 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:31,476 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,522 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,576 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,577 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,628 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,628 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,662 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,663 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,668 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,671 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,724 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:31,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,727 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:31,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,745 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:31,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:31,755 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [51632#(and (< ~i~0 46368) (<= (+ ~i~0 (* 2 ~j~0)) 11)), 51633#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 11) (< ~i~0 46368)), 51634#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 11)), 51635#(and (< ~i~0 46368) (<= (+ (* 7 ~i~0) (* 2 ~j~0)) 11))] [2020-10-16 12:27:31,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:27:31,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:27:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:31,757 INFO L87 Difference]: Start difference. First operand 155 states and 390 transitions. Second operand 14 states. [2020-10-16 12:27:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:32,454 INFO L93 Difference]: Finished difference Result 226 states and 523 transitions. [2020-10-16 12:27:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:32,455 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:27:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:32,457 INFO L225 Difference]: With dead ends: 226 [2020-10-16 12:27:32,457 INFO L226 Difference]: Without dead ends: 224 [2020-10-16 12:27:32,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:27:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-16 12:27:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 151. [2020-10-16 12:27:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:27:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 378 transitions. [2020-10-16 12:27:32,461 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 378 transitions. Word has length 14 [2020-10-16 12:27:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:32,462 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 378 transitions. [2020-10-16 12:27:32,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:27:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 378 transitions. [2020-10-16 12:27:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:32,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:32,463 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:32,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 12:27:32,672 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1969851866, now seen corresponding path program 91 times [2020-10-16 12:27:32,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:32,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198533640] [2020-10-16 12:27:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:32,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198533640] [2020-10-16 12:27:32,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644158654] [2020-10-16 12:27:32,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:32,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:33,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:33,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1239789250] [2020-10-16 12:27:33,057 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:33,058 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:33,061 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:33,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:33,065 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:33,066 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,080 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:33,081 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:33,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52244#(and (<= (+ ~i~0 (* 4 ~j~0)) 14) (< ~i~0 46368))] [2020-10-16 12:27:33,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:33,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:33,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:33,124 INFO L87 Difference]: Start difference. First operand 151 states and 378 transitions. Second operand 11 states. [2020-10-16 12:27:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:33,433 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-10-16 12:27:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:33,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:33,436 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:27:33,436 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:27:33,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:27:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 158. [2020-10-16 12:27:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 12:27:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 401 transitions. [2020-10-16 12:27:33,447 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 401 transitions. Word has length 14 [2020-10-16 12:27:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:33,448 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 401 transitions. [2020-10-16 12:27:33,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 401 transitions. [2020-10-16 12:27:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:33,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:33,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:33,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 12:27:33,659 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1969850905, now seen corresponding path program 92 times [2020-10-16 12:27:33,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:33,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519566435] [2020-10-16 12:27:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519566435] [2020-10-16 12:27:33,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515410173] [2020-10-16 12:27:33,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:33,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:33,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:33,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:33,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:33,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:33,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:33,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2016229102] [2020-10-16 12:27:33,998 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:34,000 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:34,003 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:34,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:34,004 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:34,005 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,042 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:34,042 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,057 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [52856#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) (* 5 ~j~0)) 19))] [2020-10-16 12:27:34,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:34,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:34,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:34,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:34,058 INFO L87 Difference]: Start difference. First operand 158 states and 401 transitions. Second operand 11 states. [2020-10-16 12:27:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:34,342 INFO L93 Difference]: Finished difference Result 228 states and 532 transitions. [2020-10-16 12:27:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:34,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:34,343 INFO L225 Difference]: With dead ends: 228 [2020-10-16 12:27:34,343 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:27:34,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:27:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 156. [2020-10-16 12:27:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 395 transitions. [2020-10-16 12:27:34,346 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 395 transitions. Word has length 14 [2020-10-16 12:27:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:34,347 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 395 transitions. [2020-10-16 12:27:34,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 395 transitions. [2020-10-16 12:27:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:34,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:34,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:34,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:34,548 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1969822075, now seen corresponding path program 93 times [2020-10-16 12:27:34,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:34,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156164414] [2020-10-16 12:27:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:34,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156164414] [2020-10-16 12:27:34,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816974848] [2020-10-16 12:27:34,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:34,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:34,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:34,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:34,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:34,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [955031767] [2020-10-16 12:27:34,895 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:34,896 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:34,898 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:34,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:34,900 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:34,900 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,915 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:34,916 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:34,952 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [53465#(and (<= (+ (* 3 ~i~0) (* 5 ~j~0)) 21) (< ~i~0 46368))] [2020-10-16 12:27:34,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:34,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:34,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:34,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:34,953 INFO L87 Difference]: Start difference. First operand 156 states and 395 transitions. Second operand 11 states. [2020-10-16 12:27:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:35,219 INFO L93 Difference]: Finished difference Result 225 states and 526 transitions. [2020-10-16 12:27:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:35,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:35,221 INFO L225 Difference]: With dead ends: 225 [2020-10-16 12:27:35,221 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:27:35,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:27:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 157. [2020-10-16 12:27:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 398 transitions. [2020-10-16 12:27:35,226 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 398 transitions. Word has length 14 [2020-10-16 12:27:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:35,226 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 398 transitions. [2020-10-16 12:27:35,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 398 transitions. [2020-10-16 12:27:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:35,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:35,227 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:35,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 12:27:35,430 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1969821114, now seen corresponding path program 94 times [2020-10-16 12:27:35,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:35,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089891646] [2020-10-16 12:27:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089891646] [2020-10-16 12:27:35,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970102603] [2020-10-16 12:27:35,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:35,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:35,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:35,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:35,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:35,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:35,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:35,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1109648061] [2020-10-16 12:27:35,872 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:35,873 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:35,876 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:35,876 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:35,881 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:35,882 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,899 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:35,899 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:35,934 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54073#(and (<= (+ (* 3 ~i~0) (* 4 ~j~0)) 18) (< ~i~0 46368))] [2020-10-16 12:27:35,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:35,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:35,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:35,935 INFO L87 Difference]: Start difference. First operand 157 states and 398 transitions. Second operand 11 states. [2020-10-16 12:27:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:36,207 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-10-16 12:27:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:36,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:36,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:36,209 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:27:36,209 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:27:36,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:27:36,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 154. [2020-10-16 12:27:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 12:27:36,214 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 12:27:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:36,214 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 12:27:36,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 12:27:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:36,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:36,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:36,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-16 12:27:36,416 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:36,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1968928345, now seen corresponding path program 95 times [2020-10-16 12:27:36,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:36,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958504318] [2020-10-16 12:27:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:36,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958504318] [2020-10-16 12:27:36,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482732601] [2020-10-16 12:27:36,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:36,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:36,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:36,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:36,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:36,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:36,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:36,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1042724360] [2020-10-16 12:27:36,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:36,802 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:36,804 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:36,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:36,805 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:36,805 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,840 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:36,840 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,893 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:36,893 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:36,904 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [54677#(and (<= (+ ~i~0 (* 3 ~j~0)) 17) (< ~i~0 46368)), 54678#(and (<= (+ (* 4 ~i~0) (* 3 ~j~0)) 17) (< ~i~0 46368))] [2020-10-16 12:27:36,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:36,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:36,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:36,905 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 12 states. [2020-10-16 12:27:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:37,279 INFO L93 Difference]: Finished difference Result 237 states and 551 transitions. [2020-10-16 12:27:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:37,280 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:37,282 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:37,282 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:27:37,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:27:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 157. [2020-10-16 12:27:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-16 12:27:37,287 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-16 12:27:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:37,287 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-16 12:27:37,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-16 12:27:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:37,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:37,288 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:37,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-16 12:27:37,499 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:37,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1968927384, now seen corresponding path program 96 times [2020-10-16 12:27:37,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:37,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991009696] [2020-10-16 12:27:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991009696] [2020-10-16 12:27:37,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214839487] [2020-10-16 12:27:37,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:37,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:37,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:37,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:37,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:37,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:37,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1202021936] [2020-10-16 12:27:37,999 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:38,001 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:38,006 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:38,006 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:38,007 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:38,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,067 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:38,068 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,144 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:38,145 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:38,159 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [55306#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 19) (< ~i~0 46368)), 55307#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) (* 3 ~j~0)) 19))] [2020-10-16 12:27:38,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:38,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:38,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:38,161 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 12 states. [2020-10-16 12:27:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:38,589 INFO L93 Difference]: Finished difference Result 237 states and 551 transitions. [2020-10-16 12:27:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:38,590 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:38,590 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:38,591 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:27:38,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:27:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 156. [2020-10-16 12:27:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:27:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-16 12:27:38,596 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-16 12:27:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:38,597 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-16 12:27:38,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-16 12:27:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:38,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:38,598 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:38,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:38,799 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:38,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1968898554, now seen corresponding path program 97 times [2020-10-16 12:27:38,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:38,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288465785] [2020-10-16 12:27:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:38,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288465785] [2020-10-16 12:27:38,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860373676] [2020-10-16 12:27:38,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:38,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:38,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:39,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:39,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:39,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [15472214] [2020-10-16 12:27:39,161 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:39,162 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:39,164 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:39,164 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:39,171 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:39,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,181 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,181 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,221 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,221 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,263 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:39,263 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:39,308 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [55931#(and (< ~i~0 46368) (<= (+ ~i~0 (* 2 ~j~0)) 16)), 55932#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 16)), 55933#(and (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 16) (< ~i~0 46368))] [2020-10-16 12:27:39,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:39,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:39,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:39,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:39,309 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 13 states. [2020-10-16 12:27:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:39,782 INFO L93 Difference]: Finished difference Result 246 states and 573 transitions. [2020-10-16 12:27:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:39,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:27:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:39,783 INFO L225 Difference]: With dead ends: 246 [2020-10-16 12:27:39,783 INFO L226 Difference]: Without dead ends: 244 [2020-10-16 12:27:39,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-16 12:27:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 161. [2020-10-16 12:27:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 12:27:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 416 transitions. [2020-10-16 12:27:39,789 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 416 transitions. Word has length 14 [2020-10-16 12:27:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:39,789 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 416 transitions. [2020-10-16 12:27:39,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 416 transitions. [2020-10-16 12:27:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:39,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:39,790 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:39,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:39,998 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:39,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:39,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1968897593, now seen corresponding path program 98 times [2020-10-16 12:27:40,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:40,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459656191] [2020-10-16 12:27:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459656191] [2020-10-16 12:27:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148340850] [2020-10-16 12:27:40,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:40,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:40,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:40,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:40,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:40,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:40,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:40,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1065537756] [2020-10-16 12:27:40,346 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:40,348 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:40,350 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:40,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:40,354 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:40,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,365 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,366 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,400 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,442 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,442 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,481 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,481 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,525 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:40,525 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:40,576 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [56578#(and (<= ~j~0 11) (< ~i~0 46368)), 56579#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 46368)), 56580#(and (<= (+ (* 2 ~i~0) ~j~0) 11) (< ~i~0 46368)), 56581#(and (<= (+ (* 3 ~i~0) ~j~0) 11) (< ~i~0 46368)), 56582#(and (< ~i~0 46368) (<= (+ (* 4 ~i~0) ~j~0) 11))] [2020-10-16 12:27:40,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:27:40,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:40,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:27:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:40,577 INFO L87 Difference]: Start difference. First operand 161 states and 416 transitions. Second operand 15 states. [2020-10-16 12:27:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:41,044 INFO L93 Difference]: Finished difference Result 249 states and 593 transitions. [2020-10-16 12:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:41,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-10-16 12:27:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:41,046 INFO L225 Difference]: With dead ends: 249 [2020-10-16 12:27:41,046 INFO L226 Difference]: Without dead ends: 244 [2020-10-16 12:27:41,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-16 12:27:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 153. [2020-10-16 12:27:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 386 transitions. [2020-10-16 12:27:41,050 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 386 transitions. Word has length 14 [2020-10-16 12:27:41,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:41,051 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 386 transitions. [2020-10-16 12:27:41,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:27:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 386 transitions. [2020-10-16 12:27:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:41,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:41,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:41,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:41,252 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:41,252 INFO L82 PathProgramCache]: Analyzing trace with hash 576717301, now seen corresponding path program 99 times [2020-10-16 12:27:41,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:41,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332149126] [2020-10-16 12:27:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:41,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332149126] [2020-10-16 12:27:41,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836180160] [2020-10-16 12:27:41,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:41,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:41,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:41,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:41,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:41,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:41,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:41,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1910150893] [2020-10-16 12:27:41,690 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:41,691 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:41,695 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:27:41,695 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:41,711 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:41,711 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:41,722 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:41,723 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:41,767 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:41,767 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:41,816 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [57214#(and (<= (+ ~i~0 (* 2 ~j~0)) 17) (< ~i~0 46368)), 57215#(and (<= (+ (* 3 ~i~0) (* 2 ~j~0)) 17) (< ~i~0 46368))] [2020-10-16 12:27:41,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:41,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:41,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:41,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:41,817 INFO L87 Difference]: Start difference. First operand 153 states and 386 transitions. Second operand 12 states. [2020-10-16 12:27:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:42,166 INFO L93 Difference]: Finished difference Result 240 states and 561 transitions. [2020-10-16 12:27:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:42,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:42,167 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:27:42,168 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:27:42,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:27:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 157. [2020-10-16 12:27:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:27:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-16 12:27:42,171 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-16 12:27:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:42,172 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-16 12:27:42,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-16 12:27:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:42,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:42,172 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:42,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-16 12:27:42,373 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 576718262, now seen corresponding path program 100 times [2020-10-16 12:27:42,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:42,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118162946] [2020-10-16 12:27:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118162946] [2020-10-16 12:27:42,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560300032] [2020-10-16 12:27:42,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:42,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:42,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:42,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:42,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:42,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:42,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:42,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1869995034] [2020-10-16 12:27:42,742 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:42,743 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:42,745 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:42,745 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:42,755 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,756 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,793 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,793 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,836 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,883 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:42,884 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,932 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:42,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:42,958 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [57842#(and (< ~i~0 46368) (<= ~j~0 13)), 57843#(and (<= (+ ~i~0 ~j~0) 13) (< ~i~0 46368)), 57844#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 13)), 57845#(and (<= (+ (* 3 ~i~0) ~j~0) 13) (< ~i~0 46368))] [2020-10-16 12:27:42,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:27:42,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:42,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:27:42,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:42,959 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 14 states. [2020-10-16 12:27:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:43,380 INFO L93 Difference]: Finished difference Result 248 states and 589 transitions. [2020-10-16 12:27:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:43,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:27:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:43,382 INFO L225 Difference]: With dead ends: 248 [2020-10-16 12:27:43,382 INFO L226 Difference]: Without dead ends: 243 [2020-10-16 12:27:43,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-16 12:27:43,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 151. [2020-10-16 12:27:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:27:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 378 transitions. [2020-10-16 12:27:43,386 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 378 transitions. Word has length 14 [2020-10-16 12:27:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:43,386 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 378 transitions. [2020-10-16 12:27:43,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:27:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 378 transitions. [2020-10-16 12:27:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:43,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:43,387 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:43,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-16 12:27:43,588 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1212993479, now seen corresponding path program 101 times [2020-10-16 12:27:43,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:43,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033006600] [2020-10-16 12:27:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:43,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033006600] [2020-10-16 12:27:43,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721108816] [2020-10-16 12:27:43,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:43,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:43,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:43,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:43,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:43,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:43,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:43,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [522613354] [2020-10-16 12:27:43,963 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:43,965 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:43,967 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 44 transitions. [2020-10-16 12:27:43,968 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:43,977 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:43,977 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:44,004 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:44,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:44,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:44,005 INFO L87 Difference]: Start difference. First operand 151 states and 378 transitions. Second operand 10 states. [2020-10-16 12:27:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:44,139 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-16 12:27:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:44,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:44,141 INFO L225 Difference]: With dead ends: 195 [2020-10-16 12:27:44,141 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 12:27:44,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 12:27:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 153. [2020-10-16 12:27:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 384 transitions. [2020-10-16 12:27:44,146 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 384 transitions. Word has length 14 [2020-10-16 12:27:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:44,146 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 384 transitions. [2020-10-16 12:27:44,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 384 transitions. [2020-10-16 12:27:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:44,147 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:44,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-10-16 12:27:44,347 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1212994440, now seen corresponding path program 102 times [2020-10-16 12:27:44,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:44,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575657484] [2020-10-16 12:27:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:44,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575657484] [2020-10-16 12:27:44,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907169162] [2020-10-16 12:27:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:44,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:44,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:44,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:44,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:44,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:44,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:44,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [263355380] [2020-10-16 12:27:44,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:44,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:44,826 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-10-16 12:27:44,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:44,834 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:44,834 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:44,872 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:44,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:44,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:44,873 INFO L87 Difference]: Start difference. First operand 153 states and 384 transitions. Second operand 10 states. [2020-10-16 12:27:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:45,058 INFO L93 Difference]: Finished difference Result 200 states and 474 transitions. [2020-10-16 12:27:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:45,059 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:45,059 INFO L225 Difference]: With dead ends: 200 [2020-10-16 12:27:45,059 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:27:45,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:27:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 149. [2020-10-16 12:27:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:27:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 372 transitions. [2020-10-16 12:27:45,071 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 372 transitions. Word has length 14 [2020-10-16 12:27:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:45,071 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 372 transitions. [2020-10-16 12:27:45,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 372 transitions. [2020-10-16 12:27:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:45,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:45,071 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:45,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-16 12:27:45,272 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1233549269, now seen corresponding path program 103 times [2020-10-16 12:27:45,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:45,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692922372] [2020-10-16 12:27:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692922372] [2020-10-16 12:27:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233946363] [2020-10-16 12:27:45,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:45,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:45,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:45,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:45,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1544785732] [2020-10-16 12:27:45,626 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:45,627 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:45,630 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-10-16 12:27:45,631 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:45,635 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:45,635 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:45,670 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:45,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:45,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:45,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:45,672 INFO L87 Difference]: Start difference. First operand 149 states and 372 transitions. Second operand 10 states. [2020-10-16 12:27:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:45,850 INFO L93 Difference]: Finished difference Result 193 states and 457 transitions. [2020-10-16 12:27:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:27:45,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:45,852 INFO L225 Difference]: With dead ends: 193 [2020-10-16 12:27:45,853 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 12:27:45,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 12:27:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 151. [2020-10-16 12:27:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:27:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 378 transitions. [2020-10-16 12:27:45,857 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 378 transitions. Word has length 14 [2020-10-16 12:27:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:45,857 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 378 transitions. [2020-10-16 12:27:45,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 378 transitions. [2020-10-16 12:27:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:45,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:45,858 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:46,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-10-16 12:27:46,059 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:46,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1233550230, now seen corresponding path program 104 times [2020-10-16 12:27:46,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:46,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773937398] [2020-10-16 12:27:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773937398] [2020-10-16 12:27:46,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447043197] [2020-10-16 12:27:46,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:46,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:46,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:46,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:46,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:46,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:46,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [727072476] [2020-10-16 12:27:46,421 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:46,422 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:46,424 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-10-16 12:27:46,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:46,428 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:27:46,429 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:46,459 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:46,460 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:46,508 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:46,509 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:46,552 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [60154#(and (<= ~j~0 11) (< ~i~0 46368)), 60155#(and (<= (+ ~i~0 ~j~0) 11) (< ~i~0 46368))] [2020-10-16 12:27:46,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:46,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:46,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:46,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:46,553 INFO L87 Difference]: Start difference. First operand 151 states and 378 transitions. Second operand 12 states. [2020-10-16 12:27:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:46,830 INFO L93 Difference]: Finished difference Result 237 states and 567 transitions. [2020-10-16 12:27:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:46,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:46,832 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:46,832 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:27:46,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:27:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 150. [2020-10-16 12:27:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:27:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:27:46,836 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:27:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:46,836 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:27:46,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:27:46,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:46,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:46,836 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:47,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:47,037 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1235135880, now seen corresponding path program 105 times [2020-10-16 12:27:47,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:47,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671586914] [2020-10-16 12:27:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671586914] [2020-10-16 12:27:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917766932] [2020-10-16 12:27:47,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:47,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:27:47,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:47,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:27:47,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:47,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:47,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2020-10-16 12:27:47,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1606043623] [2020-10-16 12:27:47,295 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:47,296 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:47,299 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-10-16 12:27:47,299 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:47,315 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:47,315 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:47,352 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60759#(and (<= ~j~0 14) (< ~i~0 46368))] [2020-10-16 12:27:47,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:47,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:47,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:27:47,353 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 11 states. [2020-10-16 12:27:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:47,738 INFO L93 Difference]: Finished difference Result 240 states and 574 transitions. [2020-10-16 12:27:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:47,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:47,739 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:27:47,739 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:27:47,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:27:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:27:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 149. [2020-10-16 12:27:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:27:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:27:47,743 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:27:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:47,744 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:27:47,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:27:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:47,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:47,744 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:47,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-16 12:27:47,945 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:47,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1262178420, now seen corresponding path program 106 times [2020-10-16 12:27:47,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:47,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954986695] [2020-10-16 12:27:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954986695] [2020-10-16 12:27:48,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605355853] [2020-10-16 12:27:48,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:48,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:48,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:48,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:48,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:48,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:48,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:48,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2133999448] [2020-10-16 12:27:48,364 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:48,365 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:48,367 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:27:48,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:48,387 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:48,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:48,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:48,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:48,388 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 10 states. [2020-10-16 12:27:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:48,800 INFO L93 Difference]: Finished difference Result 236 states and 544 transitions. [2020-10-16 12:27:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:48,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:48,801 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:27:48,801 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:27:48,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:27:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 152. [2020-10-16 12:27:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:27:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 374 transitions. [2020-10-16 12:27:48,806 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 374 transitions. Word has length 14 [2020-10-16 12:27:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:48,806 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 374 transitions. [2020-10-16 12:27:48,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 374 transitions. [2020-10-16 12:27:48,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:48,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:48,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:49,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:49,008 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:49,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1262179381, now seen corresponding path program 107 times [2020-10-16 12:27:49,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:49,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363134890] [2020-10-16 12:27:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:49,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363134890] [2020-10-16 12:27:49,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506919077] [2020-10-16 12:27:49,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:49,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:49,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:49,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:50,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:50,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:50,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [472183975] [2020-10-16 12:27:50,181 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:50,182 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:50,184 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:27:50,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:50,196 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:50,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:50,235 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:50,236 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:50,284 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [61986#(and (< ~i~0 46368) (<= ~j~0 18)), 61987#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 18))] [2020-10-16 12:27:50,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:50,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:50,285 INFO L87 Difference]: Start difference. First operand 152 states and 374 transitions. Second operand 12 states. [2020-10-16 12:27:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:50,757 INFO L93 Difference]: Finished difference Result 237 states and 569 transitions. [2020-10-16 12:27:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:50,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:50,759 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:27:50,759 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:27:50,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:27:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 150. [2020-10-16 12:27:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:27:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:27:50,763 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:27:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:50,763 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:27:50,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:27:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:50,763 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:50,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:50,964 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1262841510, now seen corresponding path program 108 times [2020-10-16 12:27:50,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:50,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234847676] [2020-10-16 12:27:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234847676] [2020-10-16 12:27:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744255981] [2020-10-16 12:27:51,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:51,122 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:27:51,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:51,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:51,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:51,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:51,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [535551973] [2020-10-16 12:27:51,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:51,392 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:51,396 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:51,396 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:51,399 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:51,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:51,451 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [62601#(and (<= ~j~0 15) (< ~i~0 46368))] [2020-10-16 12:27:51,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:51,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:51,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:51,452 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 11 states. [2020-10-16 12:27:51,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:51,948 INFO L93 Difference]: Finished difference Result 239 states and 572 transitions. [2020-10-16 12:27:51,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:51,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:51,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:51,950 INFO L225 Difference]: With dead ends: 239 [2020-10-16 12:27:51,950 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:27:51,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=516, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:27:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2020-10-16 12:27:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:27:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:27:51,955 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:27:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:51,955 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:27:51,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:27:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:51,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:51,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:52,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2020-10-16 12:27:52,167 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:52,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1263765031, now seen corresponding path program 109 times [2020-10-16 12:27:52,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:52,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478775461] [2020-10-16 12:27:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478775461] [2020-10-16 12:27:52,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333375175] [2020-10-16 12:27:52,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:52,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:52,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:52,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:52,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:52,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2027558373] [2020-10-16 12:27:52,644 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:52,645 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:52,649 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:27:52,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:52,677 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:52,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:52,711 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63217#(and (<= ~j~0 17) (< ~i~0 46368))] [2020-10-16 12:27:52,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:52,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:52,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:52,713 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 11 states. [2020-10-16 12:27:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:53,256 INFO L93 Difference]: Finished difference Result 232 states and 557 transitions. [2020-10-16 12:27:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:53,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:53,258 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:27:53,258 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:27:53,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=523, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:27:53,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 149. [2020-10-16 12:27:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:27:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:27:53,262 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:27:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:53,262 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:27:53,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:27:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:53,263 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:53,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:53,465 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2100497160, now seen corresponding path program 110 times [2020-10-16 12:27:53,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:53,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648851483] [2020-10-16 12:27:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648851483] [2020-10-16 12:27:53,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170690182] [2020-10-16 12:27:53,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:53,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:53,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:53,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:53,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:53,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:53,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1668762537] [2020-10-16 12:27:53,865 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:53,866 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:53,868 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:53,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:53,877 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:53,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:53,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:53,878 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 10 states. [2020-10-16 12:27:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:54,308 INFO L93 Difference]: Finished difference Result 230 states and 529 transitions. [2020-10-16 12:27:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:54,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:54,310 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:27:54,310 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:27:54,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:27:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 153. [2020-10-16 12:27:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:27:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 377 transitions. [2020-10-16 12:27:54,314 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 377 transitions. Word has length 14 [2020-10-16 12:27:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:54,315 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 377 transitions. [2020-10-16 12:27:54,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 377 transitions. [2020-10-16 12:27:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:54,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:54,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:54,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:54,516 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:54,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2100498121, now seen corresponding path program 111 times [2020-10-16 12:27:54,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:54,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779870734] [2020-10-16 12:27:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779870734] [2020-10-16 12:27:54,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527267209] [2020-10-16 12:27:54,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:54,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:27:54,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:54,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:54,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:54,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:54,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:54,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1793479534] [2020-10-16 12:27:54,902 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:54,903 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:54,905 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:54,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:54,915 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:54,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:54,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:54,916 INFO L87 Difference]: Start difference. First operand 153 states and 377 transitions. Second operand 10 states. [2020-10-16 12:27:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:55,314 INFO L93 Difference]: Finished difference Result 233 states and 535 transitions. [2020-10-16 12:27:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:55,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:55,316 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:27:55,316 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 12:27:55,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 12:27:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2020-10-16 12:27:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 379 transitions. [2020-10-16 12:27:55,320 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 379 transitions. Word has length 14 [2020-10-16 12:27:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:55,321 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 379 transitions. [2020-10-16 12:27:55,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 379 transitions. [2020-10-16 12:27:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:55,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:55,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:55,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-16 12:27:55,532 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:55,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2100526951, now seen corresponding path program 112 times [2020-10-16 12:27:55,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:55,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132436848] [2020-10-16 12:27:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:55,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132436848] [2020-10-16 12:27:55,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609607247] [2020-10-16 12:27:55,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:55,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:55,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:55,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:55,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:55,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:55,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [204072993] [2020-10-16 12:27:55,861 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:55,863 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:55,865 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:55,865 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:55,877 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:55,878 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:55,918 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [65051#(and (< ~i~0 46368) (<= (+ ~i~0 (* 2 ~j~0)) 21))] [2020-10-16 12:27:55,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:55,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:55,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:55,919 INFO L87 Difference]: Start difference. First operand 154 states and 379 transitions. Second operand 11 states. [2020-10-16 12:27:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:56,444 INFO L93 Difference]: Finished difference Result 242 states and 562 transitions. [2020-10-16 12:27:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:56,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:27:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:56,446 INFO L225 Difference]: With dead ends: 242 [2020-10-16 12:27:56,446 INFO L226 Difference]: Without dead ends: 240 [2020-10-16 12:27:56,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-16 12:27:56,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 154. [2020-10-16 12:27:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:27:56,450 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:27:56,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:56,450 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:27:56,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:27:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:56,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:56,450 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:56,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:56,651 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2121052950, now seen corresponding path program 113 times [2020-10-16 12:27:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:56,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767213750] [2020-10-16 12:27:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:56,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767213750] [2020-10-16 12:27:56,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975426056] [2020-10-16 12:27:56,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:56,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:27:56,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:56,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:56,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:57,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:57,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:57,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1068749369] [2020-10-16 12:27:57,035 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:57,036 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:57,039 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:27:57,039 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:57,054 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:57,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:57,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:57,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:57,055 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 10 states. [2020-10-16 12:27:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:57,665 INFO L93 Difference]: Finished difference Result 231 states and 539 transitions. [2020-10-16 12:27:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:57,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:27:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:57,668 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:27:57,669 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:27:57,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:27:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 154. [2020-10-16 12:27:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:27:57,677 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:27:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:57,677 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:27:57,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:27:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:57,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:57,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-16 12:27:57,894 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:57,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2121053911, now seen corresponding path program 114 times [2020-10-16 12:27:57,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:57,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033169823] [2020-10-16 12:27:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033169823] [2020-10-16 12:27:58,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55353780] [2020-10-16 12:27:58,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:58,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:27:58,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:58,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:58,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:58,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:58,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [719675119] [2020-10-16 12:27:58,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:58,316 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:58,318 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:27:58,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:58,327 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:58,327 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:58,361 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:58,361 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:58,402 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [66299#(and (< ~i~0 46368) (<= ~j~0 19)), 66300#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 19))] [2020-10-16 12:27:58,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:58,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:58,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:58,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:58,403 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 12 states. [2020-10-16 12:27:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:58,939 INFO L93 Difference]: Finished difference Result 234 states and 565 transitions. [2020-10-16 12:27:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:58,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:27:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:58,941 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:27:58,941 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:27:58,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:27:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 154. [2020-10-16 12:27:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:27:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:27:58,946 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:27:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:58,946 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:27:58,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:27:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:58,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:58,947 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:59,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:59,154 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:27:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2121716040, now seen corresponding path program 115 times [2020-10-16 12:27:59,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:59,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799659987] [2020-10-16 12:27:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:59,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799659987] [2020-10-16 12:27:59,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265365238] [2020-10-16 12:27:59,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:59,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:59,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:27:59,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:59,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:27:59,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985463772] [2020-10-16 12:27:59,500 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:59,501 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:59,503 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:27:59,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:59,506 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:27:59,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:27:59,547 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [66921#(and (<= ~j~0 14) (< ~i~0 46368))] [2020-10-16 12:27:59,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:59,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:59,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:59,549 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 11 states. [2020-10-16 12:28:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:00,097 INFO L93 Difference]: Finished difference Result 231 states and 556 transitions. [2020-10-16 12:28:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:00,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:00,099 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:28:00,099 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:28:00,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:28:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 154. [2020-10-16 12:28:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:28:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:28:00,104 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:28:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:00,104 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:28:00,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:28:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:00,105 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:00,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2020-10-16 12:28:00,312 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2121977432, now seen corresponding path program 116 times [2020-10-16 12:28:00,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:00,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780510150] [2020-10-16 12:28:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780510150] [2020-10-16 12:28:00,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464753577] [2020-10-16 12:28:00,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:00,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:00,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:00,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:00,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:00,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:00,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:00,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [650772736] [2020-10-16 12:28:00,666 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:00,667 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:00,669 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:28:00,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:00,693 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:00,694 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:00,730 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:00,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:00,787 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [67539#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 18)), 67541#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 18)), 67540#(and (< ~i~0 46368) (<= ~j~0 18))] [2020-10-16 12:28:00,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:28:00,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:28:00,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:00,788 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 13 states. [2020-10-16 12:28:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:01,333 INFO L93 Difference]: Finished difference Result 232 states and 558 transitions. [2020-10-16 12:28:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:01,336 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:28:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:01,337 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:28:01,337 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:28:01,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:28:01,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 151. [2020-10-16 12:28:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2020-10-16 12:28:01,342 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 14 [2020-10-16 12:28:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:01,342 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2020-10-16 12:28:01,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:28:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2020-10-16 12:28:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:01,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:01,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:01,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:01,549 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2122639561, now seen corresponding path program 117 times [2020-10-16 12:28:01,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:01,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030109093] [2020-10-16 12:28:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030109093] [2020-10-16 12:28:01,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770278972] [2020-10-16 12:28:01,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:01,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:01,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:01,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:01,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:01,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:01,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:01,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1516434806] [2020-10-16 12:28:01,910 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:01,912 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:01,914 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:01,914 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:01,925 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:01,925 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:01,964 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [68154#(and (< ~i~0 46368) (<= ~j~0 21))] [2020-10-16 12:28:01,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:01,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:01,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:01,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:01,966 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand 11 states. [2020-10-16 12:28:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:02,531 INFO L93 Difference]: Finished difference Result 228 states and 551 transitions. [2020-10-16 12:28:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:02,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:02,533 INFO L225 Difference]: With dead ends: 228 [2020-10-16 12:28:02,534 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:28:02,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:28:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 150. [2020-10-16 12:28:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:28:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:28:02,539 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:28:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:02,539 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:28:02,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:28:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:02,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:02,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:02,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-16 12:28:02,750 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2145285195, now seen corresponding path program 118 times [2020-10-16 12:28:02,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:02,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167528097] [2020-10-16 12:28:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167528097] [2020-10-16 12:28:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885995176] [2020-10-16 12:28:02,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:02,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:02,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:02,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:03,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:03,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:03,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1163090542] [2020-10-16 12:28:03,150 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:03,151 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:03,153 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:03,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:03,164 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:03,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:03,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:03,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:03,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:03,165 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 10 states. [2020-10-16 12:28:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:03,705 INFO L93 Difference]: Finished difference Result 234 states and 542 transitions. [2020-10-16 12:28:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:03,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:03,707 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:28:03,708 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:28:03,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:28:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 153. [2020-10-16 12:28:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 379 transitions. [2020-10-16 12:28:03,712 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 379 transitions. Word has length 14 [2020-10-16 12:28:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 379 transitions. [2020-10-16 12:28:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 379 transitions. [2020-10-16 12:28:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:03,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:03,712 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:03,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:03,913 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2145284234, now seen corresponding path program 119 times [2020-10-16 12:28:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711906959] [2020-10-16 12:28:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711906959] [2020-10-16 12:28:04,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47641382] [2020-10-16 12:28:04,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:04,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:04,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:04,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:04,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:04,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:04,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:04,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2043946189] [2020-10-16 12:28:04,321 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:04,322 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:04,324 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:04,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:04,325 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:04,325 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:04,368 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:04,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:04,414 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [69379#(and (< ~i~0 46368) (<= ~j~0 19)), 69380#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 19))] [2020-10-16 12:28:04,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:04,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:04,415 INFO L87 Difference]: Start difference. First operand 153 states and 379 transitions. Second operand 12 states. [2020-10-16 12:28:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:04,974 INFO L93 Difference]: Finished difference Result 231 states and 552 transitions. [2020-10-16 12:28:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:04,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:04,976 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:28:04,977 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:28:04,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:28:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 151. [2020-10-16 12:28:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2020-10-16 12:28:04,982 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 14 [2020-10-16 12:28:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:04,982 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2020-10-16 12:28:04,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2020-10-16 12:28:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:04,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:04,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:05,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:05,193 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2144622105, now seen corresponding path program 120 times [2020-10-16 12:28:05,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:05,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817749564] [2020-10-16 12:28:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:05,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817749564] [2020-10-16 12:28:05,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641602431] [2020-10-16 12:28:05,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:05,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:05,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:05,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:05,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:05,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:05,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2039298235] [2020-10-16 12:28:05,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:05,589 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:05,591 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:05,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:05,602 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:05,602 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:05,639 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [69992#(and (<= ~j~0 17) (< ~i~0 46368))] [2020-10-16 12:28:05,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:05,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:05,641 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand 11 states. [2020-10-16 12:28:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:06,198 INFO L93 Difference]: Finished difference Result 226 states and 543 transitions. [2020-10-16 12:28:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:06,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:06,200 INFO L225 Difference]: With dead ends: 226 [2020-10-16 12:28:06,200 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 12:28:06,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 12:28:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 151. [2020-10-16 12:28:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2020-10-16 12:28:06,203 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 14 [2020-10-16 12:28:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:06,204 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2020-10-16 12:28:06,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2020-10-16 12:28:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:06,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:06,204 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:06,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:06,405 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2143698584, now seen corresponding path program 121 times [2020-10-16 12:28:06,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:06,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275438214] [2020-10-16 12:28:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:06,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275438214] [2020-10-16 12:28:06,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106889315] [2020-10-16 12:28:06,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:06,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:06,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:06,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:06,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:06,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [403906628] [2020-10-16 12:28:06,840 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:06,840 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:06,842 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:06,843 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:06,852 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:06,853 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:06,891 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [70599#(and (< ~i~0 46368) (<= ~j~0 16))] [2020-10-16 12:28:06,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:06,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:06,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:06,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:06,892 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand 11 states. [2020-10-16 12:28:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:07,483 INFO L93 Difference]: Finished difference Result 227 states and 537 transitions. [2020-10-16 12:28:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:07,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:07,484 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:28:07,485 INFO L226 Difference]: Without dead ends: 222 [2020-10-16 12:28:07,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-16 12:28:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 149. [2020-10-16 12:28:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:07,489 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:07,489 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:07,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:07,489 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:07,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:07,489 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:07,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-16 12:28:07,690 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392972, now seen corresponding path program 122 times [2020-10-16 12:28:07,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:07,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731978829] [2020-10-16 12:28:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:07,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731978829] [2020-10-16 12:28:07,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488829419] [2020-10-16 12:28:07,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:07,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:07,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:07,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:08,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:08,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1119145368] [2020-10-16 12:28:08,080 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:08,081 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:08,083 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:08,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:08,098 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:08,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:08,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:08,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:08,099 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 10 states. [2020-10-16 12:28:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:08,589 INFO L93 Difference]: Finished difference Result 221 states and 508 transitions. [2020-10-16 12:28:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:08,590 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:08,591 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:28:08,591 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:28:08,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:28:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 153. [2020-10-16 12:28:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 375 transitions. [2020-10-16 12:28:08,595 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 375 transitions. Word has length 14 [2020-10-16 12:28:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:08,595 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 375 transitions. [2020-10-16 12:28:08,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 375 transitions. [2020-10-16 12:28:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:08,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:08,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:08,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-16 12:28:08,797 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392011, now seen corresponding path program 123 times [2020-10-16 12:28:08,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:08,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803772134] [2020-10-16 12:28:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:08,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803772134] [2020-10-16 12:28:08,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870958365] [2020-10-16 12:28:08,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:08,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:08,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:08,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:08,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:09,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:09,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:09,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [542934011] [2020-10-16 12:28:09,202 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:09,203 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:09,205 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:09,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:09,219 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:09,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:09,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:09,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:09,220 INFO L87 Difference]: Start difference. First operand 153 states and 375 transitions. Second operand 10 states. [2020-10-16 12:28:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:09,718 INFO L93 Difference]: Finished difference Result 220 states and 506 transitions. [2020-10-16 12:28:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:09,719 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:09,720 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:28:09,720 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 12:28:09,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 12:28:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 152. [2020-10-16 12:28:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:28:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 372 transitions. [2020-10-16 12:28:09,725 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 372 transitions. Word has length 14 [2020-10-16 12:28:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:09,725 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 372 transitions. [2020-10-16 12:28:09,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 372 transitions. [2020-10-16 12:28:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:09,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:09,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:09,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-16 12:28:09,937 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:09,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1976363181, now seen corresponding path program 124 times [2020-10-16 12:28:09,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:09,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151257266] [2020-10-16 12:28:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:10,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151257266] [2020-10-16 12:28:10,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799154998] [2020-10-16 12:28:10,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:10,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:10,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:10,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:10,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:11,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:11,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:11,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [352186500] [2020-10-16 12:28:11,139 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:11,140 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:11,142 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:11,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:11,157 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:11,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:11,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:11,159 INFO L87 Difference]: Start difference. First operand 152 states and 372 transitions. Second operand 10 states. [2020-10-16 12:28:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:11,647 INFO L93 Difference]: Finished difference Result 225 states and 516 transitions. [2020-10-16 12:28:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:11,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:11,650 INFO L225 Difference]: With dead ends: 225 [2020-10-16 12:28:11,650 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:28:11,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:28:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:28:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 154. [2020-10-16 12:28:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:28:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 378 transitions. [2020-10-16 12:28:11,654 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 378 transitions. Word has length 14 [2020-10-16 12:28:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:11,654 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 378 transitions. [2020-10-16 12:28:11,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 378 transitions. [2020-10-16 12:28:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:11,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:11,655 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:11,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-16 12:28:11,856 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1976362220, now seen corresponding path program 125 times [2020-10-16 12:28:11,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:11,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825245332] [2020-10-16 12:28:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:11,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825245332] [2020-10-16 12:28:11,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551503256] [2020-10-16 12:28:11,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:12,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:12,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:12,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:12,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:12,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:12,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:12,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [125827599] [2020-10-16 12:28:12,298 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:12,300 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:12,301 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:12,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:12,317 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:12,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:12,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:12,318 INFO L87 Difference]: Start difference. First operand 154 states and 378 transitions. Second operand 10 states. [2020-10-16 12:28:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:12,766 INFO L93 Difference]: Finished difference Result 225 states and 516 transitions. [2020-10-16 12:28:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:12,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:12,768 INFO L225 Difference]: With dead ends: 225 [2020-10-16 12:28:12,768 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:28:12,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:28:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:28:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 153. [2020-10-16 12:28:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 374 transitions. [2020-10-16 12:28:12,773 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 374 transitions. Word has length 14 [2020-10-16 12:28:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:12,773 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 374 transitions. [2020-10-16 12:28:12,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 374 transitions. [2020-10-16 12:28:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:12,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:12,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:12,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-10-16 12:28:12,987 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1975469451, now seen corresponding path program 126 times [2020-10-16 12:28:12,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:12,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892749115] [2020-10-16 12:28:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:13,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892749115] [2020-10-16 12:28:13,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406311302] [2020-10-16 12:28:13,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:13,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:13,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:13,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:13,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:13,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:13,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:13,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [210883060] [2020-10-16 12:28:13,367 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:13,368 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:13,369 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:13,370 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:13,380 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:13,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:13,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [73622#(and (< ~i~0 46368) (<= (+ ~i~0 (* 3 ~j~0)) 18))] [2020-10-16 12:28:13,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:13,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:13,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:13,443 INFO L87 Difference]: Start difference. First operand 153 states and 374 transitions. Second operand 11 states. [2020-10-16 12:28:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:14,015 INFO L93 Difference]: Finished difference Result 241 states and 554 transitions. [2020-10-16 12:28:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:28:14,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:14,017 INFO L225 Difference]: With dead ends: 241 [2020-10-16 12:28:14,017 INFO L226 Difference]: Without dead ends: 239 [2020-10-16 12:28:14,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-16 12:28:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 156. [2020-10-16 12:28:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:28:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 385 transitions. [2020-10-16 12:28:14,020 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 385 transitions. Word has length 14 [2020-10-16 12:28:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:14,020 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 385 transitions. [2020-10-16 12:28:14,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 385 transitions. [2020-10-16 12:28:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:14,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:14,021 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:14,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:14,222 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468490, now seen corresponding path program 127 times [2020-10-16 12:28:14,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:14,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63048000] [2020-10-16 12:28:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:14,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63048000] [2020-10-16 12:28:14,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990223923] [2020-10-16 12:28:14,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:14,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:14,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:14,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:14,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:14,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148575762] [2020-10-16 12:28:14,587 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:14,588 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:14,589 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:14,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:14,604 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:14,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:14,648 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [74258#(and (<= (+ (* 2 ~i~0) (* 3 ~j~0)) 21) (< ~i~0 46368))] [2020-10-16 12:28:14,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:14,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:14,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:14,650 INFO L87 Difference]: Start difference. First operand 156 states and 385 transitions. Second operand 11 states. [2020-10-16 12:28:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:15,165 INFO L93 Difference]: Finished difference Result 230 states and 532 transitions. [2020-10-16 12:28:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:15,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:15,167 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:28:15,167 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:28:15,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:28:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 153. [2020-10-16 12:28:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:15,170 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:15,171 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:15,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:15,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:15,171 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:15,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-16 12:28:15,372 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1339163482, now seen corresponding path program 128 times [2020-10-16 12:28:15,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:15,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515218339] [2020-10-16 12:28:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515218339] [2020-10-16 12:28:15,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457637117] [2020-10-16 12:28:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:15,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:15,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:15,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:15,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:15,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:15,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:15,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1976301286] [2020-10-16 12:28:15,751 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:15,753 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:15,755 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:15,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:15,775 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:15,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:15,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:15,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:15,777 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 10 states. [2020-10-16 12:28:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:16,341 INFO L93 Difference]: Finished difference Result 223 states and 520 transitions. [2020-10-16 12:28:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:16,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:16,343 INFO L225 Difference]: With dead ends: 223 [2020-10-16 12:28:16,343 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 12:28:16,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 12:28:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 156. [2020-10-16 12:28:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:28:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 387 transitions. [2020-10-16 12:28:16,347 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 387 transitions. Word has length 14 [2020-10-16 12:28:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:16,347 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 387 transitions. [2020-10-16 12:28:16,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 387 transitions. [2020-10-16 12:28:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:16,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:16,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:16,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:16,548 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1339162521, now seen corresponding path program 129 times [2020-10-16 12:28:16,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:16,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235511224] [2020-10-16 12:28:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235511224] [2020-10-16 12:28:16,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434366499] [2020-10-16 12:28:16,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:16,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:16,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:16,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:16,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:16,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:16,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:16,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668650609] [2020-10-16 12:28:16,927 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:16,929 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:16,931 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:16,931 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:16,944 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:16,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:16,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:16,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:16,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:16,945 INFO L87 Difference]: Start difference. First operand 156 states and 387 transitions. Second operand 10 states. [2020-10-16 12:28:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:17,484 INFO L93 Difference]: Finished difference Result 226 states and 526 transitions. [2020-10-16 12:28:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:17,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:17,486 INFO L225 Difference]: With dead ends: 226 [2020-10-16 12:28:17,486 INFO L226 Difference]: Without dead ends: 224 [2020-10-16 12:28:17,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-16 12:28:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 153. [2020-10-16 12:28:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:17,491 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:17,491 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:17,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:17,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:17,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:17,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:17,703 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:17,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1339133691, now seen corresponding path program 130 times [2020-10-16 12:28:17,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:17,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450156805] [2020-10-16 12:28:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450156805] [2020-10-16 12:28:17,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958135107] [2020-10-16 12:28:17,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:17,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:17,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:17,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:18,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:18,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:18,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1427432080] [2020-10-16 12:28:18,183 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:18,184 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:18,186 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:18,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:18,197 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:18,198 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:18,242 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [76098#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 46368))] [2020-10-16 12:28:18,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:18,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:18,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:18,244 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 11 states. [2020-10-16 12:28:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:18,827 INFO L93 Difference]: Finished difference Result 242 states and 564 transitions. [2020-10-16 12:28:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:28:18,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:18,829 INFO L225 Difference]: With dead ends: 242 [2020-10-16 12:28:18,829 INFO L226 Difference]: Without dead ends: 240 [2020-10-16 12:28:18,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-16 12:28:18,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 157. [2020-10-16 12:28:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 12:28:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 392 transitions. [2020-10-16 12:28:18,833 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 392 transitions. Word has length 14 [2020-10-16 12:28:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:18,833 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 392 transitions. [2020-10-16 12:28:18,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 392 transitions. [2020-10-16 12:28:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:18,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:18,834 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:19,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:19,045 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1339132730, now seen corresponding path program 131 times [2020-10-16 12:28:19,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:19,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000732258] [2020-10-16 12:28:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:19,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000732258] [2020-10-16 12:28:19,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941462700] [2020-10-16 12:28:19,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:19,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:19,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:19,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:19,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:19,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:19,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:19,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [803057956] [2020-10-16 12:28:19,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:19,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:19,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:19,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:19,480 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:19,480 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:19,521 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:19,521 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:19,563 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:19,563 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:19,610 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [76737#(and (<= ~j~0 17) (< ~i~0 46368)), 76739#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 17)), 76738#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 17))] [2020-10-16 12:28:19,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:28:19,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:28:19,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:19,611 INFO L87 Difference]: Start difference. First operand 157 states and 392 transitions. Second operand 13 states. [2020-10-16 12:28:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:20,244 INFO L93 Difference]: Finished difference Result 243 states and 583 transitions. [2020-10-16 12:28:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:20,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:28:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:20,246 INFO L225 Difference]: With dead ends: 243 [2020-10-16 12:28:20,246 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 12:28:20,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:28:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 12:28:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 153. [2020-10-16 12:28:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:20,250 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:20,250 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:20,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:28:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:20,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:20,251 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:20,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:20,452 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:20,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1318607692, now seen corresponding path program 132 times [2020-10-16 12:28:20,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:20,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337275484] [2020-10-16 12:28:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:20,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337275484] [2020-10-16 12:28:20,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275298031] [2020-10-16 12:28:20,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:20,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:28:20,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:20,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:20,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:20,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:20,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:20,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1291496766] [2020-10-16 12:28:20,904 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:20,905 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:20,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:20,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:20,921 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:20,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:20,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:20,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:20,922 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 10 states. [2020-10-16 12:28:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:21,570 INFO L93 Difference]: Finished difference Result 221 states and 520 transitions. [2020-10-16 12:28:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:21,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:21,572 INFO L225 Difference]: With dead ends: 221 [2020-10-16 12:28:21,572 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:28:21,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:28:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 156. [2020-10-16 12:28:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:28:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 389 transitions. [2020-10-16 12:28:21,577 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 389 transitions. Word has length 14 [2020-10-16 12:28:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:21,577 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 389 transitions. [2020-10-16 12:28:21,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 389 transitions. [2020-10-16 12:28:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:21,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:21,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:21,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-16 12:28:21,778 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1318606731, now seen corresponding path program 133 times [2020-10-16 12:28:21,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:21,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943193322] [2020-10-16 12:28:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:21,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943193322] [2020-10-16 12:28:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492245049] [2020-10-16 12:28:21,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:21,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:22,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843439211] [2020-10-16 12:28:22,195 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:22,196 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:22,198 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:22,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:22,221 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,222 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,274 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:22,275 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:22,332 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [77985#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 16)), 77984#(and (< ~i~0 46368) (<= ~j~0 16))] [2020-10-16 12:28:22,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:22,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:22,333 INFO L87 Difference]: Start difference. First operand 156 states and 389 transitions. Second operand 12 states. [2020-10-16 12:28:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:22,964 INFO L93 Difference]: Finished difference Result 233 states and 565 transitions. [2020-10-16 12:28:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:22,965 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:22,966 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:28:22,966 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:28:22,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:28:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 154. [2020-10-16 12:28:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:28:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:28:22,972 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:28:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:22,973 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:28:22,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:28:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:22,973 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:23,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-16 12:28:23,174 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1317944602, now seen corresponding path program 134 times [2020-10-16 12:28:23,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:23,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810703961] [2020-10-16 12:28:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810703961] [2020-10-16 12:28:23,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969997970] [2020-10-16 12:28:23,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:23,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:23,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:23,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:23,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:23,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:23,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1613481423] [2020-10-16 12:28:23,567 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:23,568 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:23,570 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:23,570 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:23,571 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:23,571 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:23,627 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [78607#(and (<= ~j~0 11) (< ~i~0 46368))] [2020-10-16 12:28:23,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:23,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:23,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:23,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:23,628 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 11 states. [2020-10-16 12:28:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:24,295 INFO L93 Difference]: Finished difference Result 227 states and 551 transitions. [2020-10-16 12:28:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:24,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:24,298 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:28:24,298 INFO L226 Difference]: Without dead ends: 222 [2020-10-16 12:28:24,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-16 12:28:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 154. [2020-10-16 12:28:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:28:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 381 transitions. [2020-10-16 12:28:24,301 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 381 transitions. Word has length 14 [2020-10-16 12:28:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:24,302 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 381 transitions. [2020-10-16 12:28:24,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 381 transitions. [2020-10-16 12:28:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:24,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:24,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:24,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-16 12:28:24,504 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:24,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1317021081, now seen corresponding path program 135 times [2020-10-16 12:28:24,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:24,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221785724] [2020-10-16 12:28:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:24,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221785724] [2020-10-16 12:28:24,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994388711] [2020-10-16 12:28:24,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:24,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:24,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:24,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:24,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:24,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1279116731] [2020-10-16 12:28:24,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:24,955 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:24,956 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:24,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:24,968 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:24,968 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:25,011 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [79223#(and (< ~i~0 46368) (<= ~j~0 19))] [2020-10-16 12:28:25,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:25,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:25,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:25,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:25,012 INFO L87 Difference]: Start difference. First operand 154 states and 381 transitions. Second operand 11 states. [2020-10-16 12:28:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:25,690 INFO L93 Difference]: Finished difference Result 233 states and 567 transitions. [2020-10-16 12:28:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:25,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:25,692 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:28:25,692 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:28:25,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:28:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 153. [2020-10-16 12:28:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:25,696 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:25,696 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:25,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:25,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:25,697 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:25,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-16 12:28:25,898 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:25,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1310504540, now seen corresponding path program 136 times [2020-10-16 12:28:25,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:25,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389083397] [2020-10-16 12:28:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:26,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389083397] [2020-10-16 12:28:26,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187003574] [2020-10-16 12:28:26,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:26,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:26,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:26,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:26,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:26,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:26,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:26,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [153272508] [2020-10-16 12:28:26,297 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:26,299 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:26,301 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:26,301 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:26,342 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:26,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:26,397 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [79843#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 5 ~i~0) (* 2 ~j~0)) 19)), 79844#(and (<= (+ ~i~0 (* 2 ~j~0)) 19) (< ~i~0 46368))] [2020-10-16 12:28:26,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:26,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:26,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:26,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:26,398 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 12 states. [2020-10-16 12:28:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:27,144 INFO L93 Difference]: Finished difference Result 244 states and 565 transitions. [2020-10-16 12:28:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:28:27,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:27,146 INFO L225 Difference]: With dead ends: 244 [2020-10-16 12:28:27,147 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:27,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2020-10-16 12:28:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 155. [2020-10-16 12:28:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 12:28:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 384 transitions. [2020-10-16 12:28:27,152 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 384 transitions. Word has length 14 [2020-10-16 12:28:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:27,152 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 384 transitions. [2020-10-16 12:28:27,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 384 transitions. [2020-10-16 12:28:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:27,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:27,153 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:27,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-16 12:28:27,364 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:27,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:27,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1310503579, now seen corresponding path program 137 times [2020-10-16 12:28:27,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:27,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836012690] [2020-10-16 12:28:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836012690] [2020-10-16 12:28:27,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288495577] [2020-10-16 12:28:27,490 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:27,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:27,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:27,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:27,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:27,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:27,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895553317] [2020-10-16 12:28:27,762 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:27,763 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:27,765 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:27,766 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:27,766 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:27,767 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,810 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:27,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,875 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:27,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:27,956 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [80487#(and (<= ~j~0 14) (< ~i~0 46368)), 80489#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 14)), 80488#(and (<= (+ ~i~0 ~j~0) 14) (< ~i~0 46368)), 80490#(and (<= (+ (* 4 ~i~0) ~j~0) 14) (= ULTIMATE.start_main_~condI~0 0))] [2020-10-16 12:28:27,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:28:27,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:27,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:28:27,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:28:27,957 INFO L87 Difference]: Start difference. First operand 155 states and 384 transitions. Second operand 14 states. [2020-10-16 12:28:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:28,598 INFO L93 Difference]: Finished difference Result 236 states and 565 transitions. [2020-10-16 12:28:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:28,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-16 12:28:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:28,599 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:28,599 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 12:28:28,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:28:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 12:28:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 150. [2020-10-16 12:28:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:28:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:28:28,604 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:28:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:28,605 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:28:28,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:28:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:28:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:28,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:28,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:28,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:28,809 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1289978541, now seen corresponding path program 138 times [2020-10-16 12:28:28,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:28,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611150928] [2020-10-16 12:28:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:28,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611150928] [2020-10-16 12:28:28,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861533818] [2020-10-16 12:28:28,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:28,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:28,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:28,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:28,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:29,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:29,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:29,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [486744390] [2020-10-16 12:28:29,211 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:29,212 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:29,214 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-16 12:28:29,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:29,230 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:29,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:29,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:29,231 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 10 states. [2020-10-16 12:28:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:29,896 INFO L93 Difference]: Finished difference Result 231 states and 540 transitions. [2020-10-16 12:28:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:29,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:29,898 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:28:29,898 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:28:29,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:28:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 153. [2020-10-16 12:28:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 379 transitions. [2020-10-16 12:28:29,902 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 379 transitions. Word has length 14 [2020-10-16 12:28:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:29,902 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 379 transitions. [2020-10-16 12:28:29,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 379 transitions. [2020-10-16 12:28:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:29,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:29,903 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:30,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:30,104 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1289977580, now seen corresponding path program 139 times [2020-10-16 12:28:30,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:30,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272700059] [2020-10-16 12:28:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272700059] [2020-10-16 12:28:30,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55724421] [2020-10-16 12:28:30,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:30,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:30,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:30,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:30,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [351617715] [2020-10-16 12:28:30,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:30,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:30,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:30,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:30,468 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:30,468 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,509 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:30,509 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:30,576 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [81727#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 21)), 81726#(and (< ~i~0 46368) (<= ~j~0 21))] [2020-10-16 12:28:30,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:30,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:30,577 INFO L87 Difference]: Start difference. First operand 153 states and 379 transitions. Second operand 12 states. [2020-10-16 12:28:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:31,226 INFO L93 Difference]: Finished difference Result 238 states and 574 transitions. [2020-10-16 12:28:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:31,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:31,228 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:28:31,228 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 12:28:31,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 12:28:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 151. [2020-10-16 12:28:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2020-10-16 12:28:31,231 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 14 [2020-10-16 12:28:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:31,231 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2020-10-16 12:28:31,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2020-10-16 12:28:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:31,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:31,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:31,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,150 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:31,436 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1289315451, now seen corresponding path program 140 times [2020-10-16 12:28:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:31,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242139641] [2020-10-16 12:28:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:31,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242139641] [2020-10-16 12:28:31,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170654460] [2020-10-16 12:28:31,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:31,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:31,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:31,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:31,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:31,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:31,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1047883626] [2020-10-16 12:28:31,851 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:31,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:31,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:31,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:31,875 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:31,875 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:31,934 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [82348#(and (< ~i~0 46368) (<= ~j~0 18))] [2020-10-16 12:28:31,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:31,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:31,935 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand 11 states. [2020-10-16 12:28:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:32,669 INFO L93 Difference]: Finished difference Result 232 states and 563 transitions. [2020-10-16 12:28:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:32,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:32,671 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:28:32,671 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:28:32,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:28:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 151. [2020-10-16 12:28:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:32,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 371 transitions. [2020-10-16 12:28:32,676 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 371 transitions. Word has length 14 [2020-10-16 12:28:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:32,676 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 371 transitions. [2020-10-16 12:28:32,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 371 transitions. [2020-10-16 12:28:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:32,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:32,677 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:32,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:32,887 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:32,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1288391930, now seen corresponding path program 141 times [2020-10-16 12:28:32,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:32,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111470667] [2020-10-16 12:28:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111470667] [2020-10-16 12:28:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430093501] [2020-10-16 12:28:33,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:33,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:28:33,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:33,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:33,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:33,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:33,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [760743156] [2020-10-16 12:28:33,300 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:33,301 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:33,303 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:33,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:33,319 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:33,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:33,362 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [82963#(and (< ~i~0 46368) (<= ~j~0 19))] [2020-10-16 12:28:33,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:33,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:33,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:33,363 INFO L87 Difference]: Start difference. First operand 151 states and 371 transitions. Second operand 11 states. [2020-10-16 12:28:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:34,180 INFO L93 Difference]: Finished difference Result 234 states and 563 transitions. [2020-10-16 12:28:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:34,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:34,183 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:28:34,183 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:28:34,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:28:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:28:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 149. [2020-10-16 12:28:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:34,187 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:34,187 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:34,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:34,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:34,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:34,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:34,391 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:34,391 INFO L82 PathProgramCache]: Analyzing trace with hash -451659801, now seen corresponding path program 142 times [2020-10-16 12:28:34,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:34,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439879226] [2020-10-16 12:28:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:34,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439879226] [2020-10-16 12:28:34,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389647376] [2020-10-16 12:28:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:34,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:34,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:34,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:34,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:34,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:34,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:34,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [333093071] [2020-10-16 12:28:34,851 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:34,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:34,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:34,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:34,877 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:34,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:34,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:34,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:34,878 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 10 states. [2020-10-16 12:28:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:35,474 INFO L93 Difference]: Finished difference Result 235 states and 535 transitions. [2020-10-16 12:28:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:35,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:35,476 INFO L225 Difference]: With dead ends: 235 [2020-10-16 12:28:35,476 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 12:28:35,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:28:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 12:28:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 152. [2020-10-16 12:28:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 12:28:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 372 transitions. [2020-10-16 12:28:35,480 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 372 transitions. Word has length 14 [2020-10-16 12:28:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:35,480 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 372 transitions. [2020-10-16 12:28:35,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 372 transitions. [2020-10-16 12:28:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:35,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:35,481 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:35,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:35,684 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:35,685 INFO L82 PathProgramCache]: Analyzing trace with hash -451658840, now seen corresponding path program 143 times [2020-10-16 12:28:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:35,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436385858] [2020-10-16 12:28:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:35,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436385858] [2020-10-16 12:28:35,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111556393] [2020-10-16 12:28:35,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:35,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:28:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:35,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:36,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:36,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:36,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1362657500] [2020-10-16 12:28:36,213 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:36,214 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:36,217 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:36,217 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:36,261 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:36,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:36,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:36,263 INFO L87 Difference]: Start difference. First operand 152 states and 372 transitions. Second operand 10 states. [2020-10-16 12:28:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:36,998 INFO L93 Difference]: Finished difference Result 238 states and 541 transitions. [2020-10-16 12:28:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:28:36,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:36,999 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:28:36,999 INFO L226 Difference]: Without dead ends: 236 [2020-10-16 12:28:37,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:28:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-16 12:28:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 153. [2020-10-16 12:28:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 374 transitions. [2020-10-16 12:28:37,003 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 374 transitions. Word has length 14 [2020-10-16 12:28:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:37,004 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 374 transitions. [2020-10-16 12:28:37,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 374 transitions. [2020-10-16 12:28:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:37,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:37,004 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:37,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:37,205 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash -451630010, now seen corresponding path program 144 times [2020-10-16 12:28:37,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:37,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694493850] [2020-10-16 12:28:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694493850] [2020-10-16 12:28:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955006067] [2020-10-16 12:28:37,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:37,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:37,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:37,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:41,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:41,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:41,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1786570548] [2020-10-16 12:28:41,620 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:41,620 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:41,622 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:41,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:41,642 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:41,642 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:41,689 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [84821#(and (< ~i~0 46368) (<= (+ ~i~0 (* 2 ~j~0)) 18))] [2020-10-16 12:28:41,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:41,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=240, Unknown=1, NotChecked=0, Total=306 [2020-10-16 12:28:41,691 INFO L87 Difference]: Start difference. First operand 153 states and 374 transitions. Second operand 11 states. [2020-10-16 12:28:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:42,435 INFO L93 Difference]: Finished difference Result 244 states and 556 transitions. [2020-10-16 12:28:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:28:42,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:42,437 INFO L225 Difference]: With dead ends: 244 [2020-10-16 12:28:42,437 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:28:42,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=235, Invalid=756, Unknown=1, NotChecked=0, Total=992 [2020-10-16 12:28:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:28:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 153. [2020-10-16 12:28:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:42,442 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:42,442 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:42,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:42,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:42,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:42,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-16 12:28:42,648 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash -431104011, now seen corresponding path program 145 times [2020-10-16 12:28:42,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:42,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159728083] [2020-10-16 12:28:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:42,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159728083] [2020-10-16 12:28:42,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71253701] [2020-10-16 12:28:42,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:42,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:43,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:43,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:43,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1504626528] [2020-10-16 12:28:43,128 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:43,129 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:43,131 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-10-16 12:28:43,131 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:43,160 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:43,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:43,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:43,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:43,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:43,162 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 10 states. [2020-10-16 12:28:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:43,869 INFO L93 Difference]: Finished difference Result 236 states and 545 transitions. [2020-10-16 12:28:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:43,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:43,871 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:43,872 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:28:43,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:28:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 153. [2020-10-16 12:28:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:43,876 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:43,876 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:43,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:43,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:43,877 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:44,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:44,078 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -431103050, now seen corresponding path program 146 times [2020-10-16 12:28:44,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:44,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89716590] [2020-10-16 12:28:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:44,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89716590] [2020-10-16 12:28:44,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843834426] [2020-10-16 12:28:44,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:44,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:44,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:44,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:44,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:44,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:44,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:44,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [217655841] [2020-10-16 12:28:44,572 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:44,573 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:44,575 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:44,575 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:44,576 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:44,576 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:44,622 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:44,622 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:44,687 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [86081#(and (< ~i~0 46368) (<= (+ ~i~0 ~j~0) 17)), 86080#(and (<= ~j~0 17) (< ~i~0 46368))] [2020-10-16 12:28:44,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:44,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:44,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:44,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:44,688 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 12 states. [2020-10-16 12:28:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:45,414 INFO L93 Difference]: Finished difference Result 238 states and 563 transitions. [2020-10-16 12:28:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:45,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:45,416 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:28:45,416 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 12:28:45,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 12:28:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 153. [2020-10-16 12:28:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:45,420 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:45,420 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:45,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:45,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:45,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:45,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-16 12:28:45,622 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash -430440921, now seen corresponding path program 147 times [2020-10-16 12:28:45,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:45,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002472314] [2020-10-16 12:28:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:45,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002472314] [2020-10-16 12:28:45,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697412493] [2020-10-16 12:28:45,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:45,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:45,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:45,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:46,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:46,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [782054180] [2020-10-16 12:28:46,081 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:46,083 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:46,085 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:46,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:46,103 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:46,104 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:46,150 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [86706#(and (< ~i~0 46368) (<= ~j~0 13))] [2020-10-16 12:28:46,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:46,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:46,151 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 11 states. [2020-10-16 12:28:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:46,880 INFO L93 Difference]: Finished difference Result 230 states and 547 transitions. [2020-10-16 12:28:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:46,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:46,882 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:28:46,882 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:28:46,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:28:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 153. [2020-10-16 12:28:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 12:28:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 376 transitions. [2020-10-16 12:28:46,886 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 376 transitions. Word has length 14 [2020-10-16 12:28:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:46,886 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 376 transitions. [2020-10-16 12:28:46,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 376 transitions. [2020-10-16 12:28:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:46,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:46,887 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:47,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:47,088 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash -430179529, now seen corresponding path program 148 times [2020-10-16 12:28:47,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:47,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262297715] [2020-10-16 12:28:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:47,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262297715] [2020-10-16 12:28:47,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608319334] [2020-10-16 12:28:47,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:47,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:47,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:47,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:47,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:47,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:47,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:47,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [265824972] [2020-10-16 12:28:47,577 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:47,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:47,580 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:47,580 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:47,583 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:47,583 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:47,631 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:47,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:47,733 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [87323#(and (<= ~j~0 15) (< ~i~0 46368)), 87325#(and (= ULTIMATE.start_main_~condI~0 0) (<= (+ (* 3 ~i~0) ~j~0) 15)), 87324#(and (<= (+ ~i~0 ~j~0) 15) (< ~i~0 46368))] [2020-10-16 12:28:47,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:28:47,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:47,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:28:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:28:47,735 INFO L87 Difference]: Start difference. First operand 153 states and 376 transitions. Second operand 13 states. [2020-10-16 12:28:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:48,419 INFO L93 Difference]: Finished difference Result 238 states and 558 transitions. [2020-10-16 12:28:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:48,420 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-10-16 12:28:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:48,421 INFO L225 Difference]: With dead ends: 238 [2020-10-16 12:28:48,421 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 12:28:48,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:28:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 12:28:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 150. [2020-10-16 12:28:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 12:28:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-10-16 12:28:48,426 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 14 [2020-10-16 12:28:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:48,426 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-10-16 12:28:48,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:28:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-10-16 12:28:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:48,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:48,427 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:48,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-16 12:28:48,633 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash -429517400, now seen corresponding path program 149 times [2020-10-16 12:28:48,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:48,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184431962] [2020-10-16 12:28:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:48,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184431962] [2020-10-16 12:28:48,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401234060] [2020-10-16 12:28:48,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:48,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:28:48,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:48,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:48,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:52,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:52,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:52,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1600446045] [2020-10-16 12:28:52,440 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:52,441 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:52,442 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:52,443 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:52,462 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:52,463 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:52,507 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [87944#(and (< ~i~0 46368) (<= ~j~0 18))] [2020-10-16 12:28:52,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:52,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2020-10-16 12:28:52,508 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand 11 states. [2020-10-16 12:28:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:53,438 INFO L93 Difference]: Finished difference Result 231 states and 544 transitions. [2020-10-16 12:28:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:53,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:53,440 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:28:53,440 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:28:53,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=272, Invalid=719, Unknown=1, NotChecked=0, Total=992 [2020-10-16 12:28:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:28:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 149. [2020-10-16 12:28:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:53,444 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:53,444 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:53,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:53,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:53,445 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:53,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:53,646 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:53,646 INFO L82 PathProgramCache]: Analyzing trace with hash -402474860, now seen corresponding path program 150 times [2020-10-16 12:28:53,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:53,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085067041] [2020-10-16 12:28:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:53,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085067041] [2020-10-16 12:28:53,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727804403] [2020-10-16 12:28:53,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:53,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:28:53,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:53,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:53,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:54,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:54,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:54,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2006460695] [2020-10-16 12:28:54,105 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:54,105 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:54,107 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-10-16 12:28:54,107 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:54,128 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:54,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:28:54,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:54,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:28:54,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:28:54,129 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 10 states. [2020-10-16 12:28:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:54,833 INFO L93 Difference]: Finished difference Result 239 states and 544 transitions. [2020-10-16 12:28:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:28:54,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-16 12:28:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:54,834 INFO L225 Difference]: With dead ends: 239 [2020-10-16 12:28:54,834 INFO L226 Difference]: Without dead ends: 237 [2020-10-16 12:28:54,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-16 12:28:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 151. [2020-10-16 12:28:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 12:28:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 369 transitions. [2020-10-16 12:28:54,837 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 369 transitions. Word has length 14 [2020-10-16 12:28:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:54,837 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 369 transitions. [2020-10-16 12:28:54,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:28:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 369 transitions. [2020-10-16 12:28:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:54,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:54,838 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:55,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:55,039 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:55,039 INFO L82 PathProgramCache]: Analyzing trace with hash -402473899, now seen corresponding path program 151 times [2020-10-16 12:28:55,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:55,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984806287] [2020-10-16 12:28:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984806287] [2020-10-16 12:28:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814767437] [2020-10-16 12:28:55,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:55,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:55,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:55,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:55,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1426334420] [2020-10-16 12:28:55,501 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:55,502 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:55,504 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:55,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:55,519 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:55,519 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,565 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:55,565 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:55,624 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [89181#(and (<= ~j~0 14) (< ~i~0 46368)), 89182#(and (<= (+ ~i~0 ~j~0) 14) (< ~i~0 46368))] [2020-10-16 12:28:55,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:28:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:28:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:28:55,625 INFO L87 Difference]: Start difference. First operand 151 states and 369 transitions. Second operand 12 states. [2020-10-16 12:28:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:56,345 INFO L93 Difference]: Finished difference Result 236 states and 552 transitions. [2020-10-16 12:28:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:56,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-16 12:28:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:56,346 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:28:56,346 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 12:28:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:28:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 12:28:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 149. [2020-10-16 12:28:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:56,350 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:56,351 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:56,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:28:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:56,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:56,351 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:56,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:56,552 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash -401811770, now seen corresponding path program 152 times [2020-10-16 12:28:56,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:56,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332872955] [2020-10-16 12:28:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332872955] [2020-10-16 12:28:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349667753] [2020-10-16 12:28:56,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:56,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:56,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:56,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:56,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:57,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:57,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:57,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1031219307] [2020-10-16 12:28:57,062 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:57,063 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:57,065 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-16 12:28:57,066 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:57,088 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:57,089 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:57,136 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [89797#(and (< ~i~0 46368) (<= ~j~0 13))] [2020-10-16 12:28:57,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:57,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:57,138 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 11 states. [2020-10-16 12:28:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:57,920 INFO L93 Difference]: Finished difference Result 228 states and 535 transitions. [2020-10-16 12:28:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:57,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:57,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:57,922 INFO L225 Difference]: With dead ends: 228 [2020-10-16 12:28:57,923 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:28:57,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:28:57,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 149. [2020-10-16 12:28:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 12:28:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 361 transitions. [2020-10-16 12:28:57,927 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 361 transitions. Word has length 14 [2020-10-16 12:28:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:57,927 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 361 transitions. [2020-10-16 12:28:57,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 361 transitions. [2020-10-16 12:28:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:57,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:57,928 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:58,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:58,130 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash -400888249, now seen corresponding path program 153 times [2020-10-16 12:28:58,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:58,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211314527] [2020-10-16 12:28:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211314527] [2020-10-16 12:28:58,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057088587] [2020-10-16 12:28:58,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:58,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:28:58,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:58,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:28:58,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:58,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:58,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 12:28:58,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [610583851] [2020-10-16 12:28:58,588 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:58,588 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:58,590 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:28:58,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:58,615 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:28:58,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:28:58,660 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [90404#(and (<= ~j~0 11) (< ~i~0 46368))] [2020-10-16 12:28:58,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:28:58,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:28:58,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:28:58,661 INFO L87 Difference]: Start difference. First operand 149 states and 361 transitions. Second operand 11 states. [2020-10-16 12:28:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:59,404 INFO L93 Difference]: Finished difference Result 224 states and 522 transitions. [2020-10-16 12:28:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:28:59,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:28:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:59,406 INFO L225 Difference]: With dead ends: 224 [2020-10-16 12:28:59,406 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 12:28:59,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:28:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 12:28:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 146. [2020-10-16 12:28:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 12:28:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 342 transitions. [2020-10-16 12:28:59,410 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 342 transitions. Word has length 14 [2020-10-16 12:28:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:59,410 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 342 transitions. [2020-10-16 12:28:59,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:28:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 342 transitions. [2020-10-16 12:28:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:28:59,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:59,411 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:28:59,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-16 12:28:59,614 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:28:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:59,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1019616642, now seen corresponding path program 7 times [2020-10-16 12:28:59,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:59,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685343155] [2020-10-16 12:28:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:28:59,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685343155] [2020-10-16 12:28:59,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180102447] [2020-10-16 12:28:59,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:28:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:00,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:29:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:00,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-16 12:29:00,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990835411] [2020-10-16 12:29:00,068 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:00,069 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:00,071 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2020-10-16 12:29:00,072 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:00,093 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:00,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:00,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:00,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:00,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:00,094 INFO L87 Difference]: Start difference. First operand 146 states and 342 transitions. Second operand 11 states. [2020-10-16 12:29:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:00,338 INFO L93 Difference]: Finished difference Result 206 states and 480 transitions. [2020-10-16 12:29:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:29:00,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-16 12:29:00,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:00,340 INFO L225 Difference]: With dead ends: 206 [2020-10-16 12:29:00,340 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 12:29:00,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:29:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 12:29:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 156. [2020-10-16 12:29:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 12:29:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 383 transitions. [2020-10-16 12:29:00,345 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 383 transitions. Word has length 14 [2020-10-16 12:29:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:00,345 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 383 transitions. [2020-10-16 12:29:00,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 383 transitions. [2020-10-16 12:29:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:29:00,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:00,346 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:00,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-16 12:29:00,552 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1046764459, now seen corresponding path program 7 times [2020-10-16 12:29:00,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:00,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237793984] [2020-10-16 12:29:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237793984] [2020-10-16 12:29:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901883192] [2020-10-16 12:29:00,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:00,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:00,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:00,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:00,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1832483186] [2020-10-16 12:29:00,946 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:00,948 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:00,950 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:00,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:00,958 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:00,958 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,006 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,006 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,056 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,056 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,114 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,114 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,179 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,237 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,302 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:29:01,303 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:01,363 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [91597#(and (<= (+ ~i~0 ~j~0) 8) (< ~i~0 46368)), 91596#(and (< ~i~0 46368) (<= ~j~0 8)), 91599#(and (<= (+ (* 3 ~i~0) ~j~0) 8) (< ~i~0 46368)), 91598#(and (< ~i~0 46368) (<= (+ (* 2 ~i~0) ~j~0) 8)), 91601#(and (< ~i~0 46368) (<= (+ (* 5 ~i~0) ~j~0) 8)), 91600#(and (< ~i~0 46368) (<= (+ (* 4 ~i~0) ~j~0) 8)), 91602#(and (<= (+ (* 6 ~i~0) ~j~0) 8) (< ~i~0 46368))] [2020-10-16 12:29:01,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:29:01,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:01,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:29:01,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:01,364 INFO L87 Difference]: Start difference. First operand 156 states and 383 transitions. Second operand 18 states. [2020-10-16 12:29:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:02,277 INFO L93 Difference]: Finished difference Result 248 states and 593 transitions. [2020-10-16 12:29:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:29:02,278 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-16 12:29:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:02,279 INFO L225 Difference]: With dead ends: 248 [2020-10-16 12:29:02,279 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 12:29:02,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=402, Invalid=1080, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:29:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 12:29:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 169. [2020-10-16 12:29:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-16 12:29:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 427 transitions. [2020-10-16 12:29:02,282 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 427 transitions. Word has length 14 [2020-10-16 12:29:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:02,283 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 427 transitions. [2020-10-16 12:29:02,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:29:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 427 transitions. [2020-10-16 12:29:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:02,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:02,283 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:02,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:02,484 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:02,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1771658259, now seen corresponding path program 154 times [2020-10-16 12:29:02,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:02,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153156382] [2020-10-16 12:29:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:02,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153156382] [2020-10-16 12:29:02,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990956416] [2020-10-16 12:29:02,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:02,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:02,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:02,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:02,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:03,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:03,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2079436650] [2020-10-16 12:29:03,050 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:03,051 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:03,054 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 40 transitions. [2020-10-16 12:29:03,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:03,083 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,095 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,096 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,109 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:03,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:03,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:03,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:03,110 INFO L87 Difference]: Start difference. First operand 169 states and 427 transitions. Second operand 11 states. [2020-10-16 12:29:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:03,164 INFO L93 Difference]: Finished difference Result 212 states and 513 transitions. [2020-10-16 12:29:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:03,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:03,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:03,167 INFO L225 Difference]: With dead ends: 212 [2020-10-16 12:29:03,167 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 12:29:03,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:03,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 12:29:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 179. [2020-10-16 12:29:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-16 12:29:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 457 transitions. [2020-10-16 12:29:03,173 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 457 transitions. Word has length 15 [2020-10-16 12:29:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:03,173 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 457 transitions. [2020-10-16 12:29:03,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 457 transitions. [2020-10-16 12:29:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:03,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:03,174 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:03,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-16 12:29:03,385 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1771657298, now seen corresponding path program 155 times [2020-10-16 12:29:03,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:03,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355296656] [2020-10-16 12:29:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355296656] [2020-10-16 12:29:03,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303892289] [2020-10-16 12:29:03,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:03,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:03,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:03,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:03,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:03,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:03,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:03,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2106621384] [2020-10-16 12:29:03,917 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:03,918 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:03,922 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-10-16 12:29:03,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:03,963 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,975 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:03,975 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:03,983 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:03,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:03,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:03,984 INFO L87 Difference]: Start difference. First operand 179 states and 457 transitions. Second operand 11 states. [2020-10-16 12:29:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:04,113 INFO L93 Difference]: Finished difference Result 223 states and 535 transitions. [2020-10-16 12:29:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:04,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:04,114 INFO L225 Difference]: With dead ends: 223 [2020-10-16 12:29:04,115 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 12:29:04,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:29:04,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 12:29:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 177. [2020-10-16 12:29:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-16 12:29:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 451 transitions. [2020-10-16 12:29:04,119 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 451 transitions. Word has length 15 [2020-10-16 12:29:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:04,119 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 451 transitions. [2020-10-16 12:29:04,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 451 transitions. [2020-10-16 12:29:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:04,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:04,120 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:04,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-16 12:29:04,330 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1771628468, now seen corresponding path program 156 times [2020-10-16 12:29:04,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:04,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065851421] [2020-10-16 12:29:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065851421] [2020-10-16 12:29:04,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396107057] [2020-10-16 12:29:04,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:04,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:04,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:04,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:04,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:04,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:04,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:04,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1376222617] [2020-10-16 12:29:04,934 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:04,935 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:04,938 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:29:04,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:04,957 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,967 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:04,967 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:04,979 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:04,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:04,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:04,980 INFO L87 Difference]: Start difference. First operand 177 states and 451 transitions. Second operand 11 states. [2020-10-16 12:29:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:05,195 INFO L93 Difference]: Finished difference Result 227 states and 543 transitions. [2020-10-16 12:29:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:05,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:05,197 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:29:05,197 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:29:05,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:29:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 178. [2020-10-16 12:29:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-16 12:29:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 454 transitions. [2020-10-16 12:29:05,201 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 454 transitions. Word has length 15 [2020-10-16 12:29:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:05,201 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 454 transitions. [2020-10-16 12:29:05,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 454 transitions. [2020-10-16 12:29:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:05,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:05,202 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:05,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-16 12:29:05,403 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1771627507, now seen corresponding path program 157 times [2020-10-16 12:29:05,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:05,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721437869] [2020-10-16 12:29:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:05,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721437869] [2020-10-16 12:29:05,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531357585] [2020-10-16 12:29:05,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:05,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:05,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:05,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:05,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:05,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296015195] [2020-10-16 12:29:05,992 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:05,993 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:05,996 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-16 12:29:05,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:06,016 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:06,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:06,025 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:06,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:06,038 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:06,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:06,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:06,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:06,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:06,040 INFO L87 Difference]: Start difference. First operand 178 states and 454 transitions. Second operand 11 states. [2020-10-16 12:29:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:06,221 INFO L93 Difference]: Finished difference Result 229 states and 548 transitions. [2020-10-16 12:29:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:06,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:06,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:06,223 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:06,224 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:06,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:29:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2020-10-16 12:29:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:06,228 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:06,228 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:06,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:06,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:06,229 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:06,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:06,430 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:06,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1770734738, now seen corresponding path program 158 times [2020-10-16 12:29:06,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:06,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143426985] [2020-10-16 12:29:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:06,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143426985] [2020-10-16 12:29:06,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526514274] [2020-10-16 12:29:06,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:06,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:06,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:06,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:06,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:07,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:07,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:07,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1558005052] [2020-10-16 12:29:07,041 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:07,041 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:07,044 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:29:07,044 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:07,056 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:07,056 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:07,073 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:07,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:07,082 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:07,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:07,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:07,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:07,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:07,083 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:07,314 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:07,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:07,316 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:07,316 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:07,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 177. [2020-10-16 12:29:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-16 12:29:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 451 transitions. [2020-10-16 12:29:07,319 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 451 transitions. Word has length 15 [2020-10-16 12:29:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:07,320 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 451 transitions. [2020-10-16 12:29:07,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 451 transitions. [2020-10-16 12:29:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:07,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:07,320 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:07,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2020-10-16 12:29:07,521 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1770733777, now seen corresponding path program 159 times [2020-10-16 12:29:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:07,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286904170] [2020-10-16 12:29:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286904170] [2020-10-16 12:29:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8304496] [2020-10-16 12:29:07,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:07,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:07,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:07,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:07,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:11,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:11,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:11,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [342918422] [2020-10-16 12:29:11,850 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:11,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:11,854 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:29:11,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:11,866 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:11,866 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:11,881 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:11,881 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:11,891 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:11,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:11,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:11,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:11,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:29:11,893 INFO L87 Difference]: Start difference. First operand 177 states and 451 transitions. Second operand 11 states. [2020-10-16 12:29:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:12,168 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:29:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:12,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:12,171 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:12,171 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:12,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=151, Invalid=310, Unknown=1, NotChecked=0, Total=462 [2020-10-16 12:29:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 176. [2020-10-16 12:29:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:29:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 448 transitions. [2020-10-16 12:29:12,177 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 448 transitions. Word has length 15 [2020-10-16 12:29:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:12,177 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 448 transitions. [2020-10-16 12:29:12,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 448 transitions. [2020-10-16 12:29:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:12,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:12,181 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:12,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:12,392 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1770704947, now seen corresponding path program 160 times [2020-10-16 12:29:12,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:12,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290450623] [2020-10-16 12:29:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:12,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290450623] [2020-10-16 12:29:12,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232559288] [2020-10-16 12:29:12,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:12,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:12,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:12,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:12,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:13,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [356820188] [2020-10-16 12:29:13,037 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:13,038 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:13,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:29:13,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:13,053 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,054 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,067 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:13,068 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:13,081 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:13,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:13,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:13,082 INFO L87 Difference]: Start difference. First operand 176 states and 448 transitions. Second operand 11 states. [2020-10-16 12:29:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:13,338 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:13,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:13,340 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:13,340 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:13,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 177. [2020-10-16 12:29:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-16 12:29:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 451 transitions. [2020-10-16 12:29:13,344 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 451 transitions. Word has length 15 [2020-10-16 12:29:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:13,345 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 451 transitions. [2020-10-16 12:29:13,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 451 transitions. [2020-10-16 12:29:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:13,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:13,345 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:13,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:13,546 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1770703986, now seen corresponding path program 161 times [2020-10-16 12:29:13,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:13,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17420103] [2020-10-16 12:29:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:13,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17420103] [2020-10-16 12:29:13,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782568924] [2020-10-16 12:29:13,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:13,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:13,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:13,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:13,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:14,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:14,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [150337697] [2020-10-16 12:29:14,167 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:14,168 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:14,171 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-10-16 12:29:14,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:14,182 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,182 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,197 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:14,198 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:14,212 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:14,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:14,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:14,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:14,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:14,213 INFO L87 Difference]: Start difference. First operand 177 states and 451 transitions. Second operand 11 states. [2020-10-16 12:29:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:14,484 INFO L93 Difference]: Finished difference Result 232 states and 554 transitions. [2020-10-16 12:29:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:14,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:14,486 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:14,487 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:14,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:29:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 173. [2020-10-16 12:29:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-16 12:29:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 439 transitions. [2020-10-16 12:29:14,491 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 439 transitions. Word has length 15 [2020-10-16 12:29:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:14,491 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 439 transitions. [2020-10-16 12:29:14,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 439 transitions. [2020-10-16 12:29:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:14,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:14,492 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:14,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:14,693 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:14,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1743029108, now seen corresponding path program 162 times [2020-10-16 12:29:14,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:14,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225331937] [2020-10-16 12:29:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:14,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225331937] [2020-10-16 12:29:14,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928614727] [2020-10-16 12:29:14,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:14,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:14,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:14,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:14,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:15,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:15,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:15,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618852843] [2020-10-16 12:29:15,393 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:15,394 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:15,397 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:15,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:15,416 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,447 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:15,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:15,462 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:15,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:15,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:15,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:15,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:15,464 INFO L87 Difference]: Start difference. First operand 173 states and 439 transitions. Second operand 11 states. [2020-10-16 12:29:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:15,963 INFO L93 Difference]: Finished difference Result 227 states and 543 transitions. [2020-10-16 12:29:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:15,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:15,967 INFO L225 Difference]: With dead ends: 227 [2020-10-16 12:29:15,967 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 12:29:15,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 12:29:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-10-16 12:29:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:29:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 448 transitions. [2020-10-16 12:29:15,974 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 448 transitions. Word has length 15 [2020-10-16 12:29:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:15,975 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 448 transitions. [2020-10-16 12:29:15,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 448 transitions. [2020-10-16 12:29:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:15,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:15,976 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:16,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:16,191 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:16,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1743028147, now seen corresponding path program 163 times [2020-10-16 12:29:16,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:16,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040274196] [2020-10-16 12:29:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040274196] [2020-10-16 12:29:16,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699772818] [2020-10-16 12:29:16,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:16,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:16,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:16,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:16,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1625528735] [2020-10-16 12:29:16,942 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:16,943 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:16,945 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:16,946 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:16,954 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,955 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,971 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:16,971 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:16,982 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:16,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:16,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:16,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:16,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:16,983 INFO L87 Difference]: Start difference. First operand 176 states and 448 transitions. Second operand 11 states. [2020-10-16 12:29:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:17,303 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:29:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:17,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:17,305 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:17,306 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:17,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 175. [2020-10-16 12:29:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:17,309 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:17,309 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:17,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:17,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:17,310 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:17,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-16 12:29:17,511 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1742999317, now seen corresponding path program 164 times [2020-10-16 12:29:17,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:17,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968279765] [2020-10-16 12:29:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:17,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968279765] [2020-10-16 12:29:17,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480958862] [2020-10-16 12:29:17,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:17,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:17,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:17,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:25,232 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-16 12:29:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:28,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:28,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:28,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1835221248] [2020-10-16 12:29:28,851 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:28,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:28,856 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:28,857 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:28,869 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,869 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,885 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:28,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:28,897 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:28,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:28,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:28,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=236, Unknown=3, NotChecked=0, Total=342 [2020-10-16 12:29:28,898 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:31,885 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:31,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:31,886 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:31,886 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:31,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=161, Invalid=340, Unknown=5, NotChecked=0, Total=506 [2020-10-16 12:29:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 176. [2020-10-16 12:29:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:29:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 448 transitions. [2020-10-16 12:29:31,891 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 448 transitions. Word has length 15 [2020-10-16 12:29:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:31,891 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 448 transitions. [2020-10-16 12:29:31,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 448 transitions. [2020-10-16 12:29:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:31,892 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:32,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-10-16 12:29:32,093 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:32,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:32,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1742998356, now seen corresponding path program 165 times [2020-10-16 12:29:32,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:32,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508964331] [2020-10-16 12:29:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:32,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508964331] [2020-10-16 12:29:32,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294138873] [2020-10-16 12:29:32,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:32,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:29:32,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:32,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:32,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:37,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:37,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:37,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [775392423] [2020-10-16 12:29:37,910 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:37,911 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:37,929 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:37,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:37,945 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,966 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:37,966 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:37,978 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:37,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:37,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:37,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:37,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=244, Unknown=1, NotChecked=0, Total=342 [2020-10-16 12:29:37,980 INFO L87 Difference]: Start difference. First operand 176 states and 448 transitions. Second operand 11 states. [2020-10-16 12:29:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:38,323 INFO L93 Difference]: Finished difference Result 232 states and 554 transitions. [2020-10-16 12:29:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:38,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:38,326 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:38,326 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:38,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=159, Invalid=346, Unknown=1, NotChecked=0, Total=506 [2020-10-16 12:29:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 174. [2020-10-16 12:29:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 12:29:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-16 12:29:38,330 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 15 [2020-10-16 12:29:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:38,330 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-16 12:29:38,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-16 12:29:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:38,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:38,331 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:38,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-16 12:29:38,532 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1742105587, now seen corresponding path program 166 times [2020-10-16 12:29:38,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:38,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230584007] [2020-10-16 12:29:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230584007] [2020-10-16 12:29:38,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768920262] [2020-10-16 12:29:38,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:38,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:38,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:38,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:38,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:39,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:39,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:39,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1215263127] [2020-10-16 12:29:39,272 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:39,273 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:39,276 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:39,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:39,286 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,287 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,305 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:39,305 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:39,322 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:39,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:39,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:39,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:39,323 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 11 states. [2020-10-16 12:29:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:39,702 INFO L93 Difference]: Finished difference Result 231 states and 551 transitions. [2020-10-16 12:29:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:39,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:39,703 INFO L225 Difference]: With dead ends: 231 [2020-10-16 12:29:39,704 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 12:29:39,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 12:29:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 176. [2020-10-16 12:29:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:29:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 448 transitions. [2020-10-16 12:29:39,708 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 448 transitions. Word has length 15 [2020-10-16 12:29:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:39,708 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 448 transitions. [2020-10-16 12:29:39,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 448 transitions. [2020-10-16 12:29:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:39,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:39,709 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:39,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:39,914 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1742104626, now seen corresponding path program 167 times [2020-10-16 12:29:39,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:39,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750124764] [2020-10-16 12:29:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:40,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750124764] [2020-10-16 12:29:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791178714] [2020-10-16 12:29:40,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:40,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:40,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:40,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:40,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:41,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:41,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:41,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [48116812] [2020-10-16 12:29:41,285 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:41,285 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:41,288 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:41,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:41,298 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,314 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:41,314 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:41,325 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:41,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:41,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:41,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:41,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:41,327 INFO L87 Difference]: Start difference. First operand 176 states and 448 transitions. Second operand 11 states. [2020-10-16 12:29:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:41,684 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:29:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:41,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:41,686 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:41,686 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:41,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 175. [2020-10-16 12:29:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:41,690 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:41,690 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:41,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:41,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:41,691 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:41,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:41,892 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1742075796, now seen corresponding path program 168 times [2020-10-16 12:29:41,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:41,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804840296] [2020-10-16 12:29:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804840296] [2020-10-16 12:29:42,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407560151] [2020-10-16 12:29:42,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:42,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:42,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:42,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:42,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:42,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:42,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:42,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [763256344] [2020-10-16 12:29:42,562 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:42,563 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:42,565 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:42,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:42,574 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,575 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,591 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:42,592 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:42,603 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:42,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:42,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:42,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:42,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:42,604 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:42,914 INFO L93 Difference]: Finished difference Result 230 states and 549 transitions. [2020-10-16 12:29:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:42,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:42,916 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:29:42,916 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:29:42,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:29:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 176. [2020-10-16 12:29:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:29:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 448 transitions. [2020-10-16 12:29:42,921 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 448 transitions. Word has length 15 [2020-10-16 12:29:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:42,921 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 448 transitions. [2020-10-16 12:29:42,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 448 transitions. [2020-10-16 12:29:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:42,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:42,922 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:43,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:43,123 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1742074835, now seen corresponding path program 169 times [2020-10-16 12:29:43,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:43,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157658119] [2020-10-16 12:29:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:43,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157658119] [2020-10-16 12:29:43,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100941382] [2020-10-16 12:29:43,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:43,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:43,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:43,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:43,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [160302222] [2020-10-16 12:29:43,712 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:43,712 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:43,715 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 12:29:43,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:43,727 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,728 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,741 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:43,742 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:43,754 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:43,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:43,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:43,756 INFO L87 Difference]: Start difference. First operand 176 states and 448 transitions. Second operand 11 states. [2020-10-16 12:29:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:44,074 INFO L93 Difference]: Finished difference Result 237 states and 564 transitions. [2020-10-16 12:29:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:44,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:44,077 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:29:44,077 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:29:44,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:29:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:29:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 171. [2020-10-16 12:29:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 12:29:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 433 transitions. [2020-10-16 12:29:44,082 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 433 transitions. Word has length 15 [2020-10-16 12:29:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:44,082 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 433 transitions. [2020-10-16 12:29:44,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 433 transitions. [2020-10-16 12:29:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:44,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:44,083 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:44,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:44,284 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash -884154578, now seen corresponding path program 170 times [2020-10-16 12:29:44,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:44,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925701219] [2020-10-16 12:29:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:44,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925701219] [2020-10-16 12:29:44,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027571109] [2020-10-16 12:29:44,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:44,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:44,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:44,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:44,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:44,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:44,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:44,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [857520872] [2020-10-16 12:29:44,838 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:44,839 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:44,841 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:44,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:44,853 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:44,854 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:44,865 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:44,865 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:44,877 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:44,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:44,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:44,878 INFO L87 Difference]: Start difference. First operand 171 states and 433 transitions. Second operand 11 states. [2020-10-16 12:29:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:45,230 INFO L93 Difference]: Finished difference Result 225 states and 539 transitions. [2020-10-16 12:29:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:45,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:45,232 INFO L225 Difference]: With dead ends: 225 [2020-10-16 12:29:45,232 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 12:29:45,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 12:29:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 175. [2020-10-16 12:29:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:45,236 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:45,237 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:45,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:45,237 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:45,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,183 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:45,438 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:45,439 INFO L82 PathProgramCache]: Analyzing trace with hash -884153617, now seen corresponding path program 171 times [2020-10-16 12:29:45,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:45,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121876878] [2020-10-16 12:29:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:45,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121876878] [2020-10-16 12:29:45,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487680325] [2020-10-16 12:29:45,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:45,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:45,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:45,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:46,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:46,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [893771425] [2020-10-16 12:29:46,007 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:46,008 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:46,011 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:46,011 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:46,021 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:46,022 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:46,036 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:46,036 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:46,048 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:46,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:46,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:46,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:46,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:46,049 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:46,436 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:29:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:46,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:46,439 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:46,439 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:46,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 174. [2020-10-16 12:29:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 12:29:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-16 12:29:46,443 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 15 [2020-10-16 12:29:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:46,443 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-16 12:29:46,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-16 12:29:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:46,443 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:46,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:46,644 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -884124787, now seen corresponding path program 172 times [2020-10-16 12:29:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:46,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221148881] [2020-10-16 12:29:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:46,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221148881] [2020-10-16 12:29:46,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205053965] [2020-10-16 12:29:46,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:46,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:46,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:46,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:46,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:47,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:47,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:47,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [256773527] [2020-10-16 12:29:47,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:47,392 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:47,395 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:47,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:47,409 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:47,409 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:47,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:47,422 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:47,436 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:47,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:47,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:47,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:47,437 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 11 states. [2020-10-16 12:29:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:47,833 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:47,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:47,836 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:47,836 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:47,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2020-10-16 12:29:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:47,841 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:47,841 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:47,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:47,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:47,842 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:48,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,185 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:48,043 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -884123826, now seen corresponding path program 173 times [2020-10-16 12:29:48,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:48,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043817841] [2020-10-16 12:29:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:48,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043817841] [2020-10-16 12:29:48,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082314915] [2020-10-16 12:29:48,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:48,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:48,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:48,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:48,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:48,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:48,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:48,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1108469661] [2020-10-16 12:29:48,652 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:48,653 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:48,656 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:48,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:48,672 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:48,672 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:48,692 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:48,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:48,711 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:48,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:48,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:48,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:48,712 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:49,120 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-16 12:29:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:49,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:49,123 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:29:49,124 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:29:49,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:29:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 173. [2020-10-16 12:29:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-16 12:29:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 439 transitions. [2020-10-16 12:29:49,141 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 439 transitions. Word has length 15 [2020-10-16 12:29:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:49,141 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 439 transitions. [2020-10-16 12:29:49,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 439 transitions. [2020-10-16 12:29:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:49,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:49,142 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:49,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:49,354 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:49,355 INFO L82 PathProgramCache]: Analyzing trace with hash -883231057, now seen corresponding path program 174 times [2020-10-16 12:29:49,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:49,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789537494] [2020-10-16 12:29:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:49,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789537494] [2020-10-16 12:29:49,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626228636] [2020-10-16 12:29:49,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:49,652 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:49,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:49,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:50,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:50,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:50,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [858960944] [2020-10-16 12:29:50,006 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:50,006 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:50,009 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:50,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:50,017 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:50,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:50,034 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:50,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:50,046 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:50,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:50,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:50,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:50,048 INFO L87 Difference]: Start difference. First operand 173 states and 439 transitions. Second operand 11 states. [2020-10-16 12:29:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:50,399 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:50,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:50,401 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:50,402 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:50,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2020-10-16 12:29:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:50,406 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:50,406 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:50,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:50,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:50,407 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:50,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:50,608 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -883230096, now seen corresponding path program 175 times [2020-10-16 12:29:50,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:50,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898938940] [2020-10-16 12:29:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:50,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898938940] [2020-10-16 12:29:50,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049170451] [2020-10-16 12:29:50,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:50,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:50,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:51,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:51,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1952701826] [2020-10-16 12:29:51,171 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:51,172 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:51,175 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:51,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:51,184 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:51,185 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:51,200 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:51,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:51,210 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:51,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:51,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:51,211 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:51,577 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:29:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:51,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:51,579 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:29:51,579 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:29:51,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:29:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 174. [2020-10-16 12:29:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 12:29:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-16 12:29:51,584 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 15 [2020-10-16 12:29:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:51,584 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-16 12:29:51,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-16 12:29:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:51,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:51,585 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:51,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-16 12:29:51,786 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -883201266, now seen corresponding path program 176 times [2020-10-16 12:29:51,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:51,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71004837] [2020-10-16 12:29:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:51,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71004837] [2020-10-16 12:29:51,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965064444] [2020-10-16 12:29:51,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:52,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:52,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:52,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:52,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:52,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:52,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [663608470] [2020-10-16 12:29:52,387 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:52,388 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:52,391 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:52,392 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:52,419 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:52,419 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:52,443 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:52,444 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:52,497 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:52,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:52,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:52,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:52,498 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 11 states. [2020-10-16 12:29:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:52,946 INFO L93 Difference]: Finished difference Result 236 states and 561 transitions. [2020-10-16 12:29:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:52,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:52,948 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:29:52,948 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:29:52,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:29:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 175. [2020-10-16 12:29:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:52,953 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:52,953 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:52,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:52,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:52,954 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:53,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:53,159 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:53,159 INFO L82 PathProgramCache]: Analyzing trace with hash -883200305, now seen corresponding path program 177 times [2020-10-16 12:29:53,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:53,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520889736] [2020-10-16 12:29:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520889736] [2020-10-16 12:29:53,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033366120] [2020-10-16 12:29:53,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:53,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:29:53,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:53,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:53,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:53,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:53,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:53,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2107834420] [2020-10-16 12:29:53,700 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:53,701 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:53,703 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:53,703 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:53,713 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:53,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:53,723 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:53,724 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:53,736 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:53,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:53,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:53,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:53,737 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:54,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:54,104 INFO L93 Difference]: Finished difference Result 237 states and 564 transitions. [2020-10-16 12:29:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:29:54,106 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:54,106 INFO L225 Difference]: With dead ends: 237 [2020-10-16 12:29:54,107 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 12:29:54,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:29:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 12:29:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 172. [2020-10-16 12:29:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-16 12:29:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 436 transitions. [2020-10-16 12:29:54,111 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 436 transitions. Word has length 15 [2020-10-16 12:29:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:54,112 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 436 transitions. [2020-10-16 12:29:54,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 436 transitions. [2020-10-16 12:29:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:54,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:54,113 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:54,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-16 12:29:54,316 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:54,316 INFO L82 PathProgramCache]: Analyzing trace with hash -855525427, now seen corresponding path program 178 times [2020-10-16 12:29:54,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:54,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650170225] [2020-10-16 12:29:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650170225] [2020-10-16 12:29:54,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107386356] [2020-10-16 12:29:54,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:54,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:54,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:54,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:54,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:54,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:54,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:54,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [802700363] [2020-10-16 12:29:54,972 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:54,973 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:54,976 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:54,976 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:54,989 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:54,989 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:55,003 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:55,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:55,015 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:55,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:55,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:55,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:55,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:55,016 INFO L87 Difference]: Start difference. First operand 172 states and 436 transitions. Second operand 11 states. [2020-10-16 12:29:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:55,488 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:29:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:29:55,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:55,491 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:29:55,491 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:29:55,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:29:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:29:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2020-10-16 12:29:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:29:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:29:55,495 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:29:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:55,496 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:29:55,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:29:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:55,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:55,496 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:55,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:55,697 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash -855524466, now seen corresponding path program 179 times [2020-10-16 12:29:55,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:55,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46752892] [2020-10-16 12:29:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:55,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46752892] [2020-10-16 12:29:55,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932325889] [2020-10-16 12:29:55,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:55,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:29:55,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:55,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:56,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:56,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:29:56,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1502510959] [2020-10-16 12:29:56,401 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:56,402 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:56,405 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:29:56,405 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:56,419 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:56,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:56,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:29:56,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:29:56,449 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:56,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:29:56,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:56,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:29:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:29:56,450 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:29:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:56,947 INFO L93 Difference]: Finished difference Result 234 states and 557 transitions. [2020-10-16 12:29:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:29:56,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:29:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:56,958 INFO L225 Difference]: With dead ends: 234 [2020-10-16 12:29:56,958 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 12:29:56,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:29:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 12:29:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 174. [2020-10-16 12:29:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 12:29:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-16 12:29:56,962 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 15 [2020-10-16 12:29:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:56,962 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-16 12:29:56,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:29:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-16 12:29:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:29:56,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:56,963 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:29:57,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:57,164 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:29:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -855495636, now seen corresponding path program 180 times [2020-10-16 12:29:57,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:57,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973373268] [2020-10-16 12:29:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:29:57,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973373268] [2020-10-16 12:29:57,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029983012] [2020-10-16 12:29:57,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:57,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 12:29:57,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:57,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:29:57,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:02,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:02,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:02,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [292659037] [2020-10-16 12:30:02,880 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:02,880 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:02,883 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:02,883 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:02,895 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:02,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:02,911 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:02,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:02,929 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:02,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:02,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:02,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:02,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=246, Unknown=2, NotChecked=0, Total=342 [2020-10-16 12:30:02,930 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 11 states. [2020-10-16 12:30:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:03,358 INFO L93 Difference]: Finished difference Result 229 states and 547 transitions. [2020-10-16 12:30:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:03,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:03,362 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:30:03,362 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:30:03,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=161, Invalid=389, Unknown=2, NotChecked=0, Total=552 [2020-10-16 12:30:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:30:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 175. [2020-10-16 12:30:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:30:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:30:03,366 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:30:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:03,367 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:30:03,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:30:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:03,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:03,367 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:03,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-16 12:30:03,569 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:03,569 INFO L82 PathProgramCache]: Analyzing trace with hash -855494675, now seen corresponding path program 181 times [2020-10-16 12:30:03,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:03,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606134343] [2020-10-16 12:30:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:03,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606134343] [2020-10-16 12:30:03,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650794364] [2020-10-16 12:30:03,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:03,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:03,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:04,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:04,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:04,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1324288095] [2020-10-16 12:30:04,201 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:04,201 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:04,204 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:04,204 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:04,215 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:04,216 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:04,227 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:04,228 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:04,242 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:04,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:04,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:04,243 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:30:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:04,656 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-16 12:30:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:04,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:04,658 INFO L225 Difference]: With dead ends: 236 [2020-10-16 12:30:04,658 INFO L226 Difference]: Without dead ends: 234 [2020-10-16 12:30:04,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-16 12:30:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 173. [2020-10-16 12:30:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-16 12:30:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 439 transitions. [2020-10-16 12:30:04,663 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 439 transitions. Word has length 15 [2020-10-16 12:30:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:04,664 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 439 transitions. [2020-10-16 12:30:04,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 439 transitions. [2020-10-16 12:30:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:04,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:04,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:04,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:04,865 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:04,866 INFO L82 PathProgramCache]: Analyzing trace with hash -854601906, now seen corresponding path program 182 times [2020-10-16 12:30:04,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:04,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960175418] [2020-10-16 12:30:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:05,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960175418] [2020-10-16 12:30:05,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993154467] [2020-10-16 12:30:05,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:05,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:05,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:05,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:05,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:05,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:05,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [218423616] [2020-10-16 12:30:05,510 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:05,510 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:05,514 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:05,515 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:05,535 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:05,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:05,549 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:05,549 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:05,565 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:05,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:05,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:05,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:05,566 INFO L87 Difference]: Start difference. First operand 173 states and 439 transitions. Second operand 11 states. [2020-10-16 12:30:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:05,989 INFO L93 Difference]: Finished difference Result 232 states and 555 transitions. [2020-10-16 12:30:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:30:05,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:05,992 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:30:05,992 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:30:05,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:30:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:30:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 175. [2020-10-16 12:30:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:30:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:30:05,997 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:30:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:05,997 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:30:05,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:30:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:05,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:05,998 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:06,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,195 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:06,199 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash -854600945, now seen corresponding path program 183 times [2020-10-16 12:30:06,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080352833] [2020-10-16 12:30:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:06,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080352833] [2020-10-16 12:30:06,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14763250] [2020-10-16 12:30:06,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:06,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:30:06,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:06,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:06,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:06,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:06,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1507705836] [2020-10-16 12:30:06,848 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:06,848 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:06,852 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:06,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:06,860 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:06,860 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:06,875 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:06,875 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:06,890 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:06,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:06,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:06,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:06,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:06,891 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:30:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:07,403 INFO L93 Difference]: Finished difference Result 232 states and 553 transitions. [2020-10-16 12:30:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:30:07,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:07,406 INFO L225 Difference]: With dead ends: 232 [2020-10-16 12:30:07,406 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 12:30:07,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:30:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 12:30:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 174. [2020-10-16 12:30:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-16 12:30:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-16 12:30:07,410 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 15 [2020-10-16 12:30:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:07,410 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-16 12:30:07,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-16 12:30:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:07,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:07,411 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:07,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:07,612 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash -854572115, now seen corresponding path program 184 times [2020-10-16 12:30:07,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:07,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613798495] [2020-10-16 12:30:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613798495] [2020-10-16 12:30:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039621353] [2020-10-16 12:30:07,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:07,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:07,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:07,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:08,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:08,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:08,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303979188] [2020-10-16 12:30:08,198 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:08,199 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:08,202 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:08,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:08,212 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:08,213 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:08,229 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:08,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:08,240 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:08,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:08,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:08,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:08,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:08,241 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 11 states. [2020-10-16 12:30:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:08,638 INFO L93 Difference]: Finished difference Result 230 states and 552 transitions. [2020-10-16 12:30:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:08,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:08,640 INFO L225 Difference]: With dead ends: 230 [2020-10-16 12:30:08,640 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 12:30:08,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 12:30:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2020-10-16 12:30:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-16 12:30:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 445 transitions. [2020-10-16 12:30:08,646 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 445 transitions. Word has length 15 [2020-10-16 12:30:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:08,646 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 445 transitions. [2020-10-16 12:30:08,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 445 transitions. [2020-10-16 12:30:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:08,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:08,647 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:08,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable198 [2020-10-16 12:30:08,851 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash -854571154, now seen corresponding path program 185 times [2020-10-16 12:30:08,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:08,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587379584] [2020-10-16 12:30:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:09,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587379584] [2020-10-16 12:30:09,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400264990] [2020-10-16 12:30:09,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:09,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 12:30:09,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:09,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:09,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:09,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:09,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:09,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1084320190] [2020-10-16 12:30:09,422 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:09,423 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:09,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 12:30:09,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:09,435 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:09,435 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:09,448 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:09,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:09,462 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:09,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:30:09,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:09,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:30:09,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:30:09,463 INFO L87 Difference]: Start difference. First operand 175 states and 445 transitions. Second operand 11 states. [2020-10-16 12:30:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:09,878 INFO L93 Difference]: Finished difference Result 229 states and 551 transitions. [2020-10-16 12:30:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:30:09,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-16 12:30:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:09,880 INFO L225 Difference]: With dead ends: 229 [2020-10-16 12:30:09,880 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 12:30:09,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:30:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 12:30:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 172. [2020-10-16 12:30:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-16 12:30:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 434 transitions. [2020-10-16 12:30:09,885 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 434 transitions. Word has length 15 [2020-10-16 12:30:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:09,886 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 434 transitions. [2020-10-16 12:30:09,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:30:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 434 transitions. [2020-10-16 12:30:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:09,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:09,887 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:10,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-16 12:30:10,098 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -28847924, now seen corresponding path program 186 times [2020-10-16 12:30:10,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:10,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48318619] [2020-10-16 12:30:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:10,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48318619] [2020-10-16 12:30:10,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843666128] [2020-10-16 12:30:10,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:10,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 12:30:10,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:10,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:10,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:10,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:10,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:10,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1891706047] [2020-10-16 12:30:10,739 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:10,740 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:10,743 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:10,744 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:10,758 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:10,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:10,860 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:10,860 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:10,913 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:10,914 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:10,937 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:10,937 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:10,953 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [113066#(and (< ~i~0 46368) (<= (+ ~i~0 (* 6 ~j~0)) 13))] [2020-10-16 12:30:10,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:10,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:10,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:10,955 INFO L87 Difference]: Start difference. First operand 172 states and 434 transitions. Second operand 12 states. [2020-10-16 12:30:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:11,801 INFO L93 Difference]: Finished difference Result 248 states and 585 transitions. [2020-10-16 12:30:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:11,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:11,806 INFO L225 Difference]: With dead ends: 248 [2020-10-16 12:30:11,806 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 12:30:11,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 12:30:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 182. [2020-10-16 12:30:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-16 12:30:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 464 transitions. [2020-10-16 12:30:11,813 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 464 transitions. Word has length 15 [2020-10-16 12:30:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:11,814 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 464 transitions. [2020-10-16 12:30:11,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 464 transitions. [2020-10-16 12:30:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:11,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:11,815 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:12,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:12,028 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash -28846963, now seen corresponding path program 187 times [2020-10-16 12:30:12,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:12,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976361330] [2020-10-16 12:30:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976361330] [2020-10-16 12:30:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874183681] [2020-10-16 12:30:12,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:12,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:12,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:12,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:12,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:12,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1908233315] [2020-10-16 12:30:12,840 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:12,841 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:12,844 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:12,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:12,850 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:12,851 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:12,929 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:12,930 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:12,997 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:12,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:13,021 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:13,022 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:13,037 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [113754#(and (<= (+ (* 2 ~i~0) (* 9 ~j~0)) 20) (< ~i~0 46368))] [2020-10-16 12:30:13,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:13,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:13,038 INFO L87 Difference]: Start difference. First operand 182 states and 464 transitions. Second operand 12 states. [2020-10-16 12:30:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:13,670 INFO L93 Difference]: Finished difference Result 254 states and 598 transitions. [2020-10-16 12:30:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:13,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:13,672 INFO L225 Difference]: With dead ends: 254 [2020-10-16 12:30:13,672 INFO L226 Difference]: Without dead ends: 252 [2020-10-16 12:30:13,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-16 12:30:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 180. [2020-10-16 12:30:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-16 12:30:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 458 transitions. [2020-10-16 12:30:13,679 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 458 transitions. Word has length 15 [2020-10-16 12:30:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:13,680 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 458 transitions. [2020-10-16 12:30:13,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 458 transitions. [2020-10-16 12:30:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:13,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:13,681 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:13,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-16 12:30:13,888 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -28818133, now seen corresponding path program 188 times [2020-10-16 12:30:13,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:13,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073996051] [2020-10-16 12:30:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073996051] [2020-10-16 12:30:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51654268] [2020-10-16 12:30:14,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:14,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:30:14,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:14,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:14,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:14,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:14,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:14,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990104506] [2020-10-16 12:30:14,612 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:14,613 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:14,616 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:14,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:14,617 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:14,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:14,682 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:14,682 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:14,740 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:14,741 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:14,757 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:14,757 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:14,770 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [114444#(and (<= (+ (* 3 ~i~0) (* 11 ~j~0)) 25) (< ~i~0 46368))] [2020-10-16 12:30:14,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:14,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:14,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:14,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:14,772 INFO L87 Difference]: Start difference. First operand 180 states and 458 transitions. Second operand 12 states. [2020-10-16 12:30:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:15,374 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-16 12:30:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:15,375 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:15,376 INFO L225 Difference]: With dead ends: 252 [2020-10-16 12:30:15,377 INFO L226 Difference]: Without dead ends: 250 [2020-10-16 12:30:15,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-16 12:30:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 181. [2020-10-16 12:30:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-16 12:30:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 461 transitions. [2020-10-16 12:30:15,381 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 461 transitions. Word has length 15 [2020-10-16 12:30:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:15,381 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 461 transitions. [2020-10-16 12:30:15,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 461 transitions. [2020-10-16 12:30:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:15,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:15,381 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:15,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-16 12:30:15,583 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -28817172, now seen corresponding path program 189 times [2020-10-16 12:30:15,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:15,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77990243] [2020-10-16 12:30:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:15,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77990243] [2020-10-16 12:30:15,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335899645] [2020-10-16 12:30:15,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:15,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 12:30:15,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:15,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:15,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:16,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:16,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:16,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1172284028] [2020-10-16 12:30:16,424 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:16,425 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:16,428 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:16,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:16,429 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:16,429 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:16,497 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:16,498 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:16,573 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:16,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:16,594 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:16,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:16,607 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [115134#(and (< ~i~0 46368) (<= (+ (* 3 ~i~0) (* 10 ~j~0)) 23))] [2020-10-16 12:30:16,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:16,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:16,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:16,608 INFO L87 Difference]: Start difference. First operand 181 states and 461 transitions. Second operand 12 states. [2020-10-16 12:30:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:17,246 INFO L93 Difference]: Finished difference Result 258 states and 607 transitions. [2020-10-16 12:30:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:17,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:17,248 INFO L225 Difference]: With dead ends: 258 [2020-10-16 12:30:17,248 INFO L226 Difference]: Without dead ends: 256 [2020-10-16 12:30:17,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-16 12:30:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 178. [2020-10-16 12:30:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-16 12:30:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-10-16 12:30:17,253 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 15 [2020-10-16 12:30:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:17,253 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-10-16 12:30:17,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-10-16 12:30:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:17,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:17,254 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:17,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-16 12:30:17,455 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash -27924403, now seen corresponding path program 190 times [2020-10-16 12:30:17,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:17,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211953604] [2020-10-16 12:30:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:17,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211953604] [2020-10-16 12:30:17,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130037972] [2020-10-16 12:30:17,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:17,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:30:17,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:20,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:20,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 12:30:20,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [988016897] [2020-10-16 12:30:20,471 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:20,472 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:20,475 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-16 12:30:20,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:20,475 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:20,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:20,545 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-16 12:30:20,545 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:20,596 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:20,596 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:20,625 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 3, 2, 1] term [2020-10-16 12:30:20,625 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-16 12:30:20,638 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [115824#(and (<= (+ (* 4 ~i~0) (* 11 ~j~0)) 26) (< ~i~0 46368))] [2020-10-16 12:30:20,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:30:20,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:20,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:30:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:30:20,639 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 12 states. [2020-10-16 12:30:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:21,109 INFO L93 Difference]: Finished difference Result 250 states and 589 transitions. [2020-10-16 12:30:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:30:21,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-16 12:30:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:21,111 INFO L225 Difference]: With dead ends: 250 [2020-10-16 12:30:21,111 INFO L226 Difference]: Without dead ends: 248 [2020-10-16 12:30:21,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:30:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-16 12:30:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 180. [2020-10-16 12:30:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-16 12:30:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 458 transitions. [2020-10-16 12:30:21,115 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 458 transitions. Word has length 15 [2020-10-16 12:30:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:21,116 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 458 transitions. [2020-10-16 12:30:21,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:30:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 458 transitions. [2020-10-16 12:30:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:30:21,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:21,116 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:30:21,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:21,325 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:30:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:21,326 INFO L82 PathProgramCache]: Analyzing trace with hash -27923442, now seen corresponding path program 191 times [2020-10-16 12:30:21,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:21,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861585341] [2020-10-16 12:30:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:30:21,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861585341] [2020-10-16 12:30:21,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850934440] [2020-10-16 12:30:21,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:21,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 12:30:21,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:21,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:30:21,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2020-10-16 12:30:24,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2020-10-16 12:30:24,209 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:30:24,214 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:30:24,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:30:24 BasicIcfg [2020-10-16 12:30:24,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:30:24,216 INFO L168 Benchmark]: Toolchain (without parser) took 263621.41 ms. Allocated memory was 147.3 MB in the beginning and 224.9 MB in the end (delta: 77.6 MB). Free memory was 101.8 MB in the beginning and 87.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,217 INFO L168 Benchmark]: CDTParser took 2.81 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:30:24,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.26 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 164.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 205.0 MB. Free memory was 164.1 MB in the beginning and 162.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,218 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 205.0 MB. Free memory was 162.2 MB in the beginning and 160.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,218 INFO L168 Benchmark]: RCFGBuilder took 378.92 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 140.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,218 INFO L168 Benchmark]: TraceAbstraction took 262459.57 ms. Allocated memory was 205.0 MB in the beginning and 224.9 MB in the end (delta: 19.9 MB). Free memory was 139.3 MB in the beginning and 87.6 MB in the end (delta: 51.7 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:30:24,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.81 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.26 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 164.1 MB in the end (delta: -62.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 205.0 MB. Free memory was 164.1 MB in the beginning and 162.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 205.0 MB. Free memory was 162.2 MB in the beginning and 160.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.92 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 140.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262459.57 ms. Allocated memory was 205.0 MB in the beginning and 224.9 MB in the end (delta: 19.9 MB). Free memory was 139.3 MB in the beginning and 87.6 MB in the end (delta: 51.7 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 582 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 21 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 15 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 50 TotalNumberOfCompositions, 1052 MoverChecksTotal - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 712). Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 262.3s, OverallIterations: 206, TraceHistogramMax: 7, AutomataDifference: 75.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 2665 SDtfs, 18927 SDslu, 17871 SDs, 0 SdLazy, 12530 SolverSat, 4200 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7218 GetRequests, 2155 SyntacticMatches, 509 SemanticMatches, 4554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28590 ImplicationChecksByTransitivity, 169.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 205 MinimizatonAttempts, 11556 StatesRemovedByMinimization, 205 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 113.3s InterpolantComputationTime, 5524 NumberOfCodeBlocks, 5524 NumberOfCodeBlocksAsserted, 659 NumberOfCheckSat, 5117 ConstructedInterpolants, 26 QuantifiedInterpolants, 624796 SizeOfPredicates, 202 NumberOfNonLiveVariables, 18591 ConjunctsInSsa, 2160 ConjunctsInUnsatCore, 407 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2726 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