/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:11:52,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:11:52,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:11:52,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:11:52,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:11:52,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:11:52,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:11:52,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:11:52,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:11:52,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:11:52,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:11:52,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:11:52,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:11:52,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:11:52,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:11:52,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:11:52,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:11:52,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:11:52,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:11:52,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:11:52,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:11:52,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:11:52,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:11:52,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:11:52,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:11:52,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:11:52,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:11:52,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:11:52,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:11:52,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:11:52,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:11:52,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:11:52,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:11:52,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:11:52,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:11:52,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:11:52,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:11:52,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:11:52,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:11:52,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:11:52,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:11:52,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:11:52,488 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:11:52,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:11:52,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:11:52,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:11:52,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:11:52,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:11:52,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:11:52,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:11:52,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:11:52,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:11:52,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:11:52,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:11:52,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:11:52,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:11:52,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:11:52,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:11:52,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:11:52,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:11:52,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:11:52,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:11:52,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:11:52,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:52,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:11:52,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:11:52,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:11:52,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:11:52,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:11:52,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:11:52,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:11:52,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:11:52,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:11:52,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:11:52,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:11:52,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:11:52,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-15 22:11:52,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56743e08c/b5d424100b9d4fc3a7fd247feadf39cf/FLAG9cc1c405d [2020-10-15 22:11:53,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:11:53,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-15 22:11:53,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56743e08c/b5d424100b9d4fc3a7fd247feadf39cf/FLAG9cc1c405d [2020-10-15 22:11:53,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56743e08c/b5d424100b9d4fc3a7fd247feadf39cf [2020-10-15 22:11:53,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:11:53,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:11:53,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:53,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:11:53,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:11:53,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:53" (1/1) ... [2020-10-15 22:11:53,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53dbb5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:53, skipping insertion in model container [2020-10-15 22:11:53,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:53" (1/1) ... [2020-10-15 22:11:53,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:11:53,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:11:54,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:54,225 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:11:54,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:54,368 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:11:54,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54 WrapperNode [2020-10-15 22:11:54,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:54,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:54,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:11:54,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:11:54,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:54,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:11:54,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:11:54,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:11:54,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:11:54,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:11:54,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:11:54,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:11:54,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:11:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:11:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:11:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:11:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:11:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:11:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:11:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:11:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:11:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:11:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 22:11:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 22:11:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:11:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:11:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:11:54,524 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:11:54,936 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:11:54,937 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:11:54,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:54 BoogieIcfgContainer [2020-10-15 22:11:54,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:11:54,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:11:54,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:11:54,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:11:54,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:11:53" (1/3) ... [2020-10-15 22:11:54,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba17441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:54, skipping insertion in model container [2020-10-15 22:11:54,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (2/3) ... [2020-10-15 22:11:54,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba17441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:54, skipping insertion in model container [2020-10-15 22:11:54,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:54" (3/3) ... [2020-10-15 22:11:54,948 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-15 22:11:54,958 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:11:54,958 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:11:54,964 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:11:54,965 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:11:54,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,000 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,000 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,001 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,002 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,002 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,002 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,003 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,007 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,007 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,007 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,014 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,018 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,021 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:55,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 22:11:55,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:11:55,057 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:11:55,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:11:55,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:11:55,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:11:55,057 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:11:55,057 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:11:55,057 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:11:55,070 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:11:55,073 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:55,076 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:55,078 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:55,130 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-15 22:11:55,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:11:55,136 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-15 22:11:55,139 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-15 22:11:56,674 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-15 22:11:56,674 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-15 22:11:56,681 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-15 22:11:56,746 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-15 22:11:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-15 22:11:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:11:56,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:56,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:56,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:56,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-15 22:11:56,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:56,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096553123] [2020-10-15 22:11:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096553123] [2020-10-15 22:11:57,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748437135] [2020-10-15 22:11:57,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:11:57,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:11:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:11:57,029 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-15 22:11:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,089 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-15 22:11:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:11:57,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 22:11:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,133 INFO L225 Difference]: With dead ends: 850 [2020-10-15 22:11:57,133 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 22:11:57,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:11:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 22:11:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-15 22:11:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 22:11:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-15 22:11:57,269 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-15 22:11:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,270 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-15 22:11:57,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:11:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-15 22:11:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:11:57,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:11:57,280 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-15 22:11:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871930805] [2020-10-15 22:11:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871930805] [2020-10-15 22:11:57,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141016027] [2020-10-15 22:11:57,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,415 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-15 22:11:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,470 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-15 22:11:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:11:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,478 INFO L225 Difference]: With dead ends: 802 [2020-10-15 22:11:57,478 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 22:11:57,479 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 [2020-10-15 22:11:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 22:11:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-15 22:11:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 22:11:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-15 22:11:57,506 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-15 22:11:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,506 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-15 22:11:57,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-15 22:11:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:11:57,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:11:57,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-15 22:11:57,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851120219] [2020-10-15 22:11:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851120219] [2020-10-15 22:11:57,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904742613] [2020-10-15 22:11:57,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,581 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-15 22:11:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,611 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-15 22:11:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:11:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,617 INFO L225 Difference]: With dead ends: 718 [2020-10-15 22:11:57,617 INFO L226 Difference]: Without dead ends: 598 [2020-10-15 22:11:57,618 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 [2020-10-15 22:11:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-15 22:11:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-15 22:11:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-15 22:11:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-15 22:11:57,640 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-15 22:11:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,641 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-15 22:11:57,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-15 22:11:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:11:57,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:11:57,643 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-15 22:11:57,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651385712] [2020-10-15 22:11:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651385712] [2020-10-15 22:11:57,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093539358] [2020-10-15 22:11:57,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,729 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-15 22:11:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,756 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-10-15 22:11:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:11:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,761 INFO L225 Difference]: With dead ends: 634 [2020-10-15 22:11:57,761 INFO L226 Difference]: Without dead ends: 562 [2020-10-15 22:11:57,762 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 [2020-10-15 22:11:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-15 22:11:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-10-15 22:11:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-15 22:11:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-10-15 22:11:57,780 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-10-15 22:11:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,781 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-10-15 22:11:57,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-10-15 22:11:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:11:57,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:11:57,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-15 22:11:57,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609276442] [2020-10-15 22:11:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609276442] [2020-10-15 22:11:57,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:57,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072143693] [2020-10-15 22:11:57,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:57,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:57,881 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-10-15 22:11:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,963 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-10-15 22:11:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:57,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:11:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,968 INFO L225 Difference]: With dead ends: 834 [2020-10-15 22:11:57,968 INFO L226 Difference]: Without dead ends: 450 [2020-10-15 22:11:57,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:11:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-15 22:11:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-10-15 22:11:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-15 22:11:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-10-15 22:11:57,990 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-10-15 22:11:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,991 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-10-15 22:11:57,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-10-15 22:11:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:11:57,992 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-10-15 22:11:57,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543447456] [2020-10-15 22:11:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543447456] [2020-10-15 22:11:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:58,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366794231] [2020-10-15 22:11:58,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,086 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-10-15 22:11:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,170 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-10-15 22:11:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 22:11:58,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:11:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,175 INFO L225 Difference]: With dead ends: 834 [2020-10-15 22:11:58,175 INFO L226 Difference]: Without dead ends: 410 [2020-10-15 22:11:58,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:11:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-15 22:11:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-10-15 22:11:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-15 22:11:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-10-15 22:11:58,192 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-10-15 22:11:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,193 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-10-15 22:11:58,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-10-15 22:11:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:58,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:11:58,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-10-15 22:11:58,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424806233] [2020-10-15 22:11:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424806233] [2020-10-15 22:11:58,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688502012] [2020-10-15 22:11:58,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:58,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:58,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:58,279 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-10-15 22:11:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,310 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-10-15 22:11:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:58,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:11:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,313 INFO L225 Difference]: With dead ends: 494 [2020-10-15 22:11:58,313 INFO L226 Difference]: Without dead ends: 370 [2020-10-15 22:11:58,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-15 22:11:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-10-15 22:11:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-15 22:11:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-10-15 22:11:58,325 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-10-15 22:11:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,325 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-10-15 22:11:58,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-10-15 22:11:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:58,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:11:58,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-15 22:11:58,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286460707] [2020-10-15 22:11:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286460707] [2020-10-15 22:11:58,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690460365] [2020-10-15 22:11:58,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,410 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-10-15 22:11:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,451 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-10-15 22:11:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:58,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:11:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,454 INFO L225 Difference]: With dead ends: 454 [2020-10-15 22:11:58,454 INFO L226 Difference]: Without dead ends: 238 [2020-10-15 22:11:58,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-15 22:11:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-10-15 22:11:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 22:11:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-10-15 22:11:58,465 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-10-15 22:11:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,473 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-10-15 22:11:58,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-10-15 22:11:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:58,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:11:58,475 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-15 22:11:58,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270935970] [2020-10-15 22:11:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270935970] [2020-10-15 22:11:58,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793263236] [2020-10-15 22:11:58,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:58,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:58,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:58,579 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-10-15 22:11:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,641 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-10-15 22:11:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:58,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:11:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,643 INFO L225 Difference]: With dead ends: 283 [2020-10-15 22:11:58,643 INFO L226 Difference]: Without dead ends: 214 [2020-10-15 22:11:58,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-15 22:11:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-15 22:11:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-15 22:11:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-10-15 22:11:58,652 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-10-15 22:11:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,653 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-10-15 22:11:58,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-10-15 22:11:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:11:58,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:11:58,654 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-15 22:11:58,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341021850] [2020-10-15 22:11:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341021850] [2020-10-15 22:11:58,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:58,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639676943] [2020-10-15 22:11:58,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,709 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-10-15 22:11:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,754 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-10-15 22:11:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:58,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 22:11:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,756 INFO L225 Difference]: With dead ends: 211 [2020-10-15 22:11:58,756 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 22:11:58,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 22:11:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-15 22:11:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-15 22:11:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-10-15 22:11:58,761 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-10-15 22:11:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,762 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-10-15 22:11:58,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-10-15 22:11:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:11:58,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:11:58,763 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-15 22:11:58,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987300184] [2020-10-15 22:11:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987300184] [2020-10-15 22:11:58,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:11:58,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153687200] [2020-10-15 22:11:58,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:11:58,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:11:58,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:58,822 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-10-15 22:11:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,882 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-10-15 22:11:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:11:58,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 22:11:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,883 INFO L225 Difference]: With dead ends: 134 [2020-10-15 22:11:58,884 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 22:11:58,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 22:11:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-15 22:11:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 22:11:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-10-15 22:11:58,887 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-10-15 22:11:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,887 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-10-15 22:11:58,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:11:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-10-15 22:11:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:11:58,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 22:11:58,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-15 22:11:58,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579913912] [2020-10-15 22:11:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579913912] [2020-10-15 22:11:58,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:58,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331462121] [2020-10-15 22:11:58,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,932 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-10-15 22:11:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,962 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-10-15 22:11:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:58,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 22:11:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,964 INFO L225 Difference]: With dead ends: 109 [2020-10-15 22:11:58,964 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 22:11:58,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 22:11:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-15 22:11:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 22:11:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-10-15 22:11:58,968 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-10-15 22:11:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,968 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-10-15 22:11:58,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-10-15 22:11:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:11:58,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 22:11:58,969 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-15 22:11:58,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573826206] [2020-10-15 22:11:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:59,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573826206] [2020-10-15 22:11:59,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:59,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 22:11:59,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318165322] [2020-10-15 22:11:59,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 22:11:59,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 22:11:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:59,036 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-10-15 22:11:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:59,078 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-10-15 22:11:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:11:59,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 22:11:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:59,079 INFO L225 Difference]: With dead ends: 81 [2020-10-15 22:11:59,079 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:11:59,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:11:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:11:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:11:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:11:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:11:59,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-15 22:11:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:59,080 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:11:59,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 22:11:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:11:59,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:11:59,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 22:11:59,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:11:59 BasicIcfg [2020-10-15 22:11:59,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:11:59,087 INFO L168 Benchmark]: Toolchain (without parser) took 5387.29 ms. Allocated memory was 250.6 MB in the beginning and 421.0 MB in the end (delta: 170.4 MB). Free memory was 205.7 MB in the beginning and 303.8 MB in the end (delta: -98.1 MB). Peak memory consumption was 72.3 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,088 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:11:59,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.51 ms. Allocated memory was 250.6 MB in the beginning and 314.6 MB in the end (delta: 64.0 MB). Free memory was 205.7 MB in the beginning and 267.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 314.6 MB. Free memory was 267.7 MB in the beginning and 265.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,090 INFO L168 Benchmark]: Boogie Preprocessor took 27.18 ms. Allocated memory is still 314.6 MB. Free memory was 265.2 MB in the beginning and 262.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,091 INFO L168 Benchmark]: RCFGBuilder took 488.41 ms. Allocated memory is still 314.6 MB. Free memory was 262.7 MB in the beginning and 238.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,092 INFO L168 Benchmark]: TraceAbstraction took 4143.83 ms. Allocated memory was 314.6 MB in the beginning and 421.0 MB in the end (delta: 106.4 MB). Free memory was 238.3 MB in the beginning and 303.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:59,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 669.51 ms. Allocated memory was 250.6 MB in the beginning and 314.6 MB in the end (delta: 64.0 MB). Free memory was 205.7 MB in the beginning and 267.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 314.6 MB. Free memory was 267.7 MB in the beginning and 265.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.18 ms. Allocated memory is still 314.6 MB. Free memory was 265.2 MB in the beginning and 262.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 488.41 ms. Allocated memory is still 314.6 MB. Free memory was 262.7 MB in the beginning and 238.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4143.83 ms. Allocated memory was 314.6 MB in the beginning and 421.0 MB in the end (delta: 106.4 MB). Free memory was 238.3 MB in the beginning and 303.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 347 SDtfs, 346 SDslu, 602 SDs, 0 SdLazy, 217 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 7404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...