/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:09:19,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:09:19,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:09:19,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:09:19,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:09:19,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:09:19,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:09:19,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:09:19,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:09:19,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:09:19,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:09:19,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:09:19,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:09:19,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:09:19,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:09:19,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:09:19,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:09:19,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:09:19,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:09:19,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:09:19,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:09:19,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:09:19,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:09:19,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:09:19,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:09:19,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:09:19,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:09:19,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:09:19,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:09:19,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:09:19,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:09:19,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:09:19,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:09:19,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:09:19,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:09:19,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:09:19,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:09:19,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:09:19,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:09:19,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:09:19,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:09:19,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:09:19,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:09:19,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:09:19,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:09:19,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:09:19,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:09:19,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:09:19,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:09:19,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:09:19,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:09:19,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:09:19,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:09:19,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:09:19,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:09:19,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:09:19,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:09:19,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:09:19,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:19,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:09:19,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:09:19,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:09:19,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:09:19,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:09:19,562 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:09:19,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:09:19,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:09:19,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:09:19,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:09:19,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:09:19,878 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:09:19,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-16 12:09:19,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1d6b8ae/59e48b282a704ef488fa54bf6e512a7b/FLAGf27a0e2c0 [2020-10-16 12:09:20,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:09:20,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-16 12:09:20,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1d6b8ae/59e48b282a704ef488fa54bf6e512a7b/FLAGf27a0e2c0 [2020-10-16 12:09:20,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1d6b8ae/59e48b282a704ef488fa54bf6e512a7b [2020-10-16 12:09:20,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:09:20,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:09:20,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:20,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:09:20,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:09:20,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:20" (1/1) ... [2020-10-16 12:09:20,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa3e082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:20, skipping insertion in model container [2020-10-16 12:09:20,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:20" (1/1) ... [2020-10-16 12:09:20,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:09:20,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:09:21,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:21,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:09:21,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:21,318 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:09:21,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21 WrapperNode [2020-10-16 12:09:21,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:21,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:21,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:09:21,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:09:21,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:21,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:09:21,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:09:21,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:09:21,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... [2020-10-16 12:09:21,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:09:21,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:09:21,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:09:21,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:09:21,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:09:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:09:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:09:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:09:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:09:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:09:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:09:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:09:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:09:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:09:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 12:09:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 12:09:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:09:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:09:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:09:21,461 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:09:21,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:09:21,846 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:09:21,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:21 BoogieIcfgContainer [2020-10-16 12:09:21,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:09:21,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:09:21,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:09:21,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:09:21,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:09:20" (1/3) ... [2020-10-16 12:09:21,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e89f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:21, skipping insertion in model container [2020-10-16 12:09:21,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:21" (2/3) ... [2020-10-16 12:09:21,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e89f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:21, skipping insertion in model container [2020-10-16 12:09:21,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:21" (3/3) ... [2020-10-16 12:09:21,857 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-16 12:09:21,869 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:09:21,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:09:21,877 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:09:21,878 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:09:21,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,919 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,920 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,920 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,921 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,922 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,926 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,926 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,926 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,935 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,940 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:21,943 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:09:21,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 12:09:21,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:09:21,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:09:21,975 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:09:21,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:09:21,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:09:21,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:09:21,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:09:21,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:09:21,990 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:09:21,991 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:21,993 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:21,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 12:09:22,041 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 12:09:22,042 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:09:22,047 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. [2020-10-16 12:09:22,051 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 12:09:23,378 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 12:09:23,378 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 12:09:23,384 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 12:09:23,443 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 12:09:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 12:09:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:09:23,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 12:09:23,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593873543] [2020-10-16 12:09:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:23,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593873543] [2020-10-16 12:09:23,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:23,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:23,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141464365] [2020-10-16 12:09:23,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:09:23,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:23,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:09:23,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:09:23,665 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 12:09:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:23,714 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 12:09:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:09:23,716 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 12:09:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:23,741 INFO L225 Difference]: With dead ends: 850 [2020-10-16 12:09:23,742 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 12:09:23,743 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 [2020-10-16 12:09:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 12:09:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 12:09:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 12:09:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 12:09:23,867 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 12:09:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:23,868 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 12:09:23,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:09:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 12:09:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:09:23,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:23,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:23,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:09:23,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:23,872 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 12:09:23,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:23,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976217147] [2020-10-16 12:09:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976217147] [2020-10-16 12:09:24,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:24,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076545471] [2020-10-16 12:09:24,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:24,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:24,013 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 12:09:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,059 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 12:09:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:09:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,067 INFO L225 Difference]: With dead ends: 802 [2020-10-16 12:09:24,067 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 12:09:24,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 12:09:24,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 12:09:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 12:09:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 12:09:24,098 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 12:09:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,099 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 12:09:24,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 12:09:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:09:24,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:09:24,102 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-16 12:09:24,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028271530] [2020-10-16 12:09:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028271530] [2020-10-16 12:09:24,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:24,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152164955] [2020-10-16 12:09:24,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:24,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:24,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:24,209 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 12:09:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,255 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-16 12:09:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:09:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,262 INFO L225 Difference]: With dead ends: 738 [2020-10-16 12:09:24,262 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 12:09:24,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 12:09:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-16 12:09:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-16 12:09:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-16 12:09:24,292 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-16 12:09:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,292 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-16 12:09:24,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-16 12:09:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:09:24,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:09:24,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,297 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-16 12:09:24,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156069337] [2020-10-16 12:09:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156069337] [2020-10-16 12:09:24,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:24,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9889545] [2020-10-16 12:09:24,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:24,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:24,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:24,403 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-16 12:09:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,428 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-16 12:09:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:09:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,434 INFO L225 Difference]: With dead ends: 658 [2020-10-16 12:09:24,434 INFO L226 Difference]: Without dead ends: 578 [2020-10-16 12:09:24,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-16 12:09:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-16 12:09:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-16 12:09:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-16 12:09:24,455 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-16 12:09:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,455 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-16 12:09:24,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-16 12:09:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:24,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:09:24,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-16 12:09:24,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457750486] [2020-10-16 12:09:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457750486] [2020-10-16 12:09:24,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036900888] [2020-10-16 12:09:24,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:24,505 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-16 12:09:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,540 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-16 12:09:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 12:09:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,546 INFO L225 Difference]: With dead ends: 814 [2020-10-16 12:09:24,546 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 12:09:24,546 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 [2020-10-16 12:09:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 12:09:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-16 12:09:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-16 12:09:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-16 12:09:24,565 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-16 12:09:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,566 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-16 12:09:24,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-16 12:09:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:24,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:09:24,568 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-16 12:09:24,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088281874] [2020-10-16 12:09:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088281874] [2020-10-16 12:09:24,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:24,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429300835] [2020-10-16 12:09:24,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:24,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:24,614 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 4 states. [2020-10-16 12:09:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,638 INFO L93 Difference]: Finished difference Result 562 states and 1746 transitions. [2020-10-16 12:09:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 12:09:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,643 INFO L225 Difference]: With dead ends: 562 [2020-10-16 12:09:24,643 INFO L226 Difference]: Without dead ends: 514 [2020-10-16 12:09:24,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-16 12:09:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-16 12:09:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-16 12:09:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1618 transitions. [2020-10-16 12:09:24,661 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1618 transitions. Word has length 14 [2020-10-16 12:09:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,662 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1618 transitions. [2020-10-16 12:09:24,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1618 transitions. [2020-10-16 12:09:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:24,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:09:24,664 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-16 12:09:24,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728875629] [2020-10-16 12:09:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728875629] [2020-10-16 12:09:24,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:24,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441624099] [2020-10-16 12:09:24,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:24,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,712 INFO L87 Difference]: Start difference. First operand 514 states and 1618 transitions. Second operand 5 states. [2020-10-16 12:09:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,777 INFO L93 Difference]: Finished difference Result 1034 states and 3048 transitions. [2020-10-16 12:09:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:09:24,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 12:09:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,782 INFO L225 Difference]: With dead ends: 1034 [2020-10-16 12:09:24,782 INFO L226 Difference]: Without dead ends: 538 [2020-10-16 12:09:24,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:09:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-16 12:09:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 490. [2020-10-16 12:09:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-16 12:09:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1446 transitions. [2020-10-16 12:09:24,800 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1446 transitions. Word has length 15 [2020-10-16 12:09:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,800 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 1446 transitions. [2020-10-16 12:09:24,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1446 transitions. [2020-10-16 12:09:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:24,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:09:24,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash 659646890, now seen corresponding path program 1 times [2020-10-16 12:09:24,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325765383] [2020-10-16 12:09:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325765383] [2020-10-16 12:09:24,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:24,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524255877] [2020-10-16 12:09:24,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:24,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,850 INFO L87 Difference]: Start difference. First operand 490 states and 1446 transitions. Second operand 5 states. [2020-10-16 12:09:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:24,888 INFO L93 Difference]: Finished difference Result 718 states and 2070 transitions. [2020-10-16 12:09:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:24,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 12:09:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:24,892 INFO L225 Difference]: With dead ends: 718 [2020-10-16 12:09:24,892 INFO L226 Difference]: Without dead ends: 394 [2020-10-16 12:09:24,892 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 [2020-10-16 12:09:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-16 12:09:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-16 12:09:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-16 12:09:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1106 transitions. [2020-10-16 12:09:24,905 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1106 transitions. Word has length 15 [2020-10-16 12:09:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:24,906 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1106 transitions. [2020-10-16 12:09:24,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1106 transitions. [2020-10-16 12:09:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:24,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:24,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:24,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:09:24,908 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:24,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 2 times [2020-10-16 12:09:24,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:24,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600519184] [2020-10-16 12:09:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:24,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600519184] [2020-10-16 12:09:24,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:24,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:24,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854224534] [2020-10-16 12:09:24,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:24,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:24,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:24,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:24,953 INFO L87 Difference]: Start difference. First operand 394 states and 1106 transitions. Second operand 5 states. [2020-10-16 12:09:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:25,000 INFO L93 Difference]: Finished difference Result 522 states and 1422 transitions. [2020-10-16 12:09:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:25,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 12:09:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:25,002 INFO L225 Difference]: With dead ends: 522 [2020-10-16 12:09:25,003 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 12:09:25,003 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 [2020-10-16 12:09:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 12:09:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-10-16 12:09:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-16 12:09:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 663 transitions. [2020-10-16 12:09:25,011 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 663 transitions. Word has length 15 [2020-10-16 12:09:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:25,011 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 663 transitions. [2020-10-16 12:09:25,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 663 transitions. [2020-10-16 12:09:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:25,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:25,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:25,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:09:25,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 3 times [2020-10-16 12:09:25,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:25,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361811130] [2020-10-16 12:09:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:25,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361811130] [2020-10-16 12:09:25,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:25,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:25,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666530712] [2020-10-16 12:09:25,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:25,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:25,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:25,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:25,050 INFO L87 Difference]: Start difference. First operand 246 states and 663 transitions. Second operand 4 states. [2020-10-16 12:09:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:25,080 INFO L93 Difference]: Finished difference Result 291 states and 720 transitions. [2020-10-16 12:09:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:25,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:09:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:25,082 INFO L225 Difference]: With dead ends: 291 [2020-10-16 12:09:25,082 INFO L226 Difference]: Without dead ends: 222 [2020-10-16 12:09:25,083 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 [2020-10-16 12:09:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-16 12:09:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-10-16 12:09:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-16 12:09:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 558 transitions. [2020-10-16 12:09:25,090 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 558 transitions. Word has length 15 [2020-10-16 12:09:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:25,090 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 558 transitions. [2020-10-16 12:09:25,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 558 transitions. [2020-10-16 12:09:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:09:25,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:25,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:25,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:09:25,092 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-16 12:09:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:25,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122169522] [2020-10-16 12:09:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:25,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122169522] [2020-10-16 12:09:25,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:25,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:25,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628839716] [2020-10-16 12:09:25,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:25,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:25,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:25,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:25,135 INFO L87 Difference]: Start difference. First operand 222 states and 558 transitions. Second operand 5 states. [2020-10-16 12:09:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:25,175 INFO L93 Difference]: Finished difference Result 219 states and 489 transitions. [2020-10-16 12:09:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:09:25,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 12:09:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:25,177 INFO L225 Difference]: With dead ends: 219 [2020-10-16 12:09:25,177 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 12:09:25,177 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 [2020-10-16 12:09:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 12:09:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-16 12:09:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 12:09:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 363 transitions. [2020-10-16 12:09:25,182 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 363 transitions. Word has length 16 [2020-10-16 12:09:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:25,183 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 363 transitions. [2020-10-16 12:09:25,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 363 transitions. [2020-10-16 12:09:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:09:25,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:25,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:25,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:09:25,184 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 12:09:25,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:25,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619925026] [2020-10-16 12:09:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:25,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619925026] [2020-10-16 12:09:25,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:25,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:09:25,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141192394] [2020-10-16 12:09:25,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:09:25,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:25,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:09:25,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:25,230 INFO L87 Difference]: Start difference. First operand 166 states and 363 transitions. Second operand 6 states. [2020-10-16 12:09:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:25,280 INFO L93 Difference]: Finished difference Result 142 states and 292 transitions. [2020-10-16 12:09:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:25,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 12:09:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:25,282 INFO L225 Difference]: With dead ends: 142 [2020-10-16 12:09:25,282 INFO L226 Difference]: Without dead ends: 103 [2020-10-16 12:09:25,283 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 [2020-10-16 12:09:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-16 12:09:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-16 12:09:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 12:09:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-16 12:09:25,286 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 17 [2020-10-16 12:09:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:25,286 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-16 12:09:25,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:09:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-16 12:09:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:09:25,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:25,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:25,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:09:25,288 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 1 times [2020-10-16 12:09:25,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:25,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752787891] [2020-10-16 12:09:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:25,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752787891] [2020-10-16 12:09:25,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:25,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:09:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295800777] [2020-10-16 12:09:25,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:09:25,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:09:25,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:25,338 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-10-16 12:09:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:25,375 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-16 12:09:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:25,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 12:09:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:25,376 INFO L225 Difference]: With dead ends: 93 [2020-10-16 12:09:25,376 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:09:25,376 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 [2020-10-16 12:09:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:09:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:09:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:09:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:09:25,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 12:09:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:25,377 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:09:25,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:09:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:09:25,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:09:25,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:09:25,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:09:25 BasicIcfg [2020-10-16 12:09:25,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:09:25,384 INFO L168 Benchmark]: Toolchain (without parser) took 4685.42 ms. Allocated memory was 141.6 MB in the beginning and 281.0 MB in the end (delta: 139.5 MB). Free memory was 103.6 MB in the beginning and 172.1 MB in the end (delta: -68.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,384 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.08 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 161.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.51 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,387 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,387 INFO L168 Benchmark]: RCFGBuilder took 453.66 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 133.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,388 INFO L168 Benchmark]: TraceAbstraction took 3531.32 ms. Allocated memory was 204.5 MB in the beginning and 281.0 MB in the end (delta: 76.5 MB). Free memory was 133.2 MB in the beginning and 172.1 MB in the end (delta: -38.9 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:25,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 618.08 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 161.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.51 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 157.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.66 ms. Allocated memory is still 204.5 MB. Free memory was 157.7 MB in the beginning and 133.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3531.32 ms. Allocated memory was 204.5 MB in the beginning and 281.0 MB in the end (delta: 76.5 MB). Free memory was 133.2 MB in the beginning and 172.1 MB in the end (delta: -38.9 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 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: 3.4s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 353 SDtfs, 348 SDslu, 586 SDs, 0 SdLazy, 216 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s 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, 128 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 7145 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...