/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:16:56,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:16:56,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:16:56,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:16:56,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:16:56,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:16:56,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:16:56,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:16:56,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:16:56,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:16:56,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:16:56,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:16:56,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:16:56,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:16:56,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:16:56,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:16:56,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:16:56,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:16:56,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:16:56,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:16:56,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:16:56,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:16:56,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:16:56,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:16:56,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:16:56,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:16:56,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:16:56,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:16:56,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:16:56,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:16:56,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:16:56,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:16:56,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:16:56,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:16:56,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:16:56,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:16:56,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:16:56,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:16:56,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:16:56,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:16:56,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:16:56,525 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:16:56,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:16:56,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:16:56,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:16:56,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:16:56,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:16:56,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:16:56,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:16:56,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:16:56,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:16:56,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:16:56,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:16:56,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:16:56,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:16:56,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:16:56,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:16:56,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:16:56,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:16:56,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:16:56,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:16:56,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:16:56,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:16:56,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:16:56,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:16:56,847 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:16:56,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-10-15 22:16:56,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85abb999/72dc9ee71afb444b94a106db6287525d/FLAG4f2b5c64d [2020-10-15 22:16:57,461 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:16:57,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-10-15 22:16:57,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85abb999/72dc9ee71afb444b94a106db6287525d/FLAG4f2b5c64d [2020-10-15 22:16:57,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85abb999/72dc9ee71afb444b94a106db6287525d [2020-10-15 22:16:57,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:16:57,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:16:57,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:16:57,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:16:57,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:16:57,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:16:57" (1/1) ... [2020-10-15 22:16:57,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360a62e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:57, skipping insertion in model container [2020-10-15 22:16:57,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:16:57" (1/1) ... [2020-10-15 22:16:57,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:16:57,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:16:58,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:16:58,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:16:58,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:16:58,358 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:16:58,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58 WrapperNode [2020-10-15 22:16:58,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:16:58,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:16:58,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:16:58,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:16:58,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:16:58,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:16:58,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:16:58,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:16:58,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... [2020-10-15 22:16:58,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:16:58,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:16:58,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:16:58,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:16:58,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:16:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:16:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:16:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:16:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:16:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:16:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:16:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:16:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:16:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:16:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:16:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:16:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:16:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:16:58,515 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:16:58,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:16:58,877 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:16:58,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:16:58 BoogieIcfgContainer [2020-10-15 22:16:58,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:16:58,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:16:58,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:16:58,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:16:58,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:16:57" (1/3) ... [2020-10-15 22:16:58,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26de1795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:16:58, skipping insertion in model container [2020-10-15 22:16:58,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:16:58" (2/3) ... [2020-10-15 22:16:58,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26de1795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:16:58, skipping insertion in model container [2020-10-15 22:16:58,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:16:58" (3/3) ... [2020-10-15 22:16:58,887 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-10-15 22:16:58,899 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:16:58,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:16:58,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:16:58,908 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:16:58,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,938 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,939 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,939 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,941 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,956 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,957 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,959 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:16:58,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:16:58,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:16:58,994 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:16:58,994 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:16:58,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:16:58,994 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:16:58,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:16:58,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:16:58,995 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:16:59,007 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:16:59,009 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:16:59,011 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:16:59,013 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 22:16:59,056 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 22:16:59,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:16:59,062 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:16:59,065 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:17:00,608 INFO L132 LiptonReduction]: Checked pairs total: 2362 [2020-10-15 22:17:00,609 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-15 22:17:00,616 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-15 22:17:00,641 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:17:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:17:00,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:17:00,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:00,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:00,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-10-15 22:17:00,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:00,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061495116] [2020-10-15 22:17:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061495116] [2020-10-15 22:17:00,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:00,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:17:00,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294342562] [2020-10-15 22:17:00,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:17:00,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:00,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:17:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:00,896 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:17:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:00,944 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-15 22:17:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:17:00,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:17:00,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:00,963 INFO L225 Difference]: With dead ends: 290 [2020-10-15 22:17:00,963 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 22:17:00,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 22:17:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-15 22:17:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 22:17:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-15 22:17:01,044 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-15 22:17:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,047 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-15 22:17:01,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:17:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-15 22:17:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:17:01,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:17:01,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash 824028903, now seen corresponding path program 1 times [2020-10-15 22:17:01,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490308395] [2020-10-15 22:17:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490308395] [2020-10-15 22:17:01,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:17:01,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161679794] [2020-10-15 22:17:01,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:17:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:17:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,173 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-15 22:17:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,215 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-10-15 22:17:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:17:01,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 22:17:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,219 INFO L225 Difference]: With dead ends: 220 [2020-10-15 22:17:01,219 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 22:17:01,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 22:17:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-10-15 22:17:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-15 22:17:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-10-15 22:17:01,249 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-10-15 22:17:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,250 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-10-15 22:17:01,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:17:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-10-15 22:17:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:17:01,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:17:01,255 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,255 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-10-15 22:17:01,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847536432] [2020-10-15 22:17:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847536432] [2020-10-15 22:17:01,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:17:01,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742199960] [2020-10-15 22:17:01,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:17:01,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:17:01,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:17:01,363 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-10-15 22:17:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,401 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-10-15 22:17:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:17:01,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 22:17:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,404 INFO L225 Difference]: With dead ends: 240 [2020-10-15 22:17:01,404 INFO L226 Difference]: Without dead ends: 176 [2020-10-15 22:17:01,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:17:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-15 22:17:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-15 22:17:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-15 22:17:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-10-15 22:17:01,422 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-10-15 22:17:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,422 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-10-15 22:17:01,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:17:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-10-15 22:17:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:17:01,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:17:01,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-10-15 22:17:01,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250320200] [2020-10-15 22:17:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250320200] [2020-10-15 22:17:01,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:17:01,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679153914] [2020-10-15 22:17:01,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:17:01,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:17:01,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,482 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-10-15 22:17:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,491 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-10-15 22:17:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:17:01,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 22:17:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,494 INFO L225 Difference]: With dead ends: 225 [2020-10-15 22:17:01,494 INFO L226 Difference]: Without dead ends: 183 [2020-10-15 22:17:01,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-15 22:17:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-10-15 22:17:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 22:17:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-10-15 22:17:01,504 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-10-15 22:17:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,504 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-10-15 22:17:01,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:17:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-10-15 22:17:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:17:01,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:17:01,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-10-15 22:17:01,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043080542] [2020-10-15 22:17:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043080542] [2020-10-15 22:17:01,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:17:01,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545768403] [2020-10-15 22:17:01,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:17:01,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:17:01,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:17:01,593 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 5 states. [2020-10-15 22:17:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,641 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-10-15 22:17:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:17:01,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 22:17:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,643 INFO L225 Difference]: With dead ends: 162 [2020-10-15 22:17:01,643 INFO L226 Difference]: Without dead ends: 125 [2020-10-15 22:17:01,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:17:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-15 22:17:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-15 22:17:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-15 22:17:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-10-15 22:17:01,649 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-10-15 22:17:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,650 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-10-15 22:17:01,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:17:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-10-15 22:17:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:17:01,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:17:01,652 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-10-15 22:17:01,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891543765] [2020-10-15 22:17:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891543765] [2020-10-15 22:17:01,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:17:01,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702196792] [2020-10-15 22:17:01,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:17:01,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:17:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,688 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-10-15 22:17:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,696 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-10-15 22:17:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:17:01,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-15 22:17:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,698 INFO L225 Difference]: With dead ends: 157 [2020-10-15 22:17:01,698 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 22:17:01,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:17:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 22:17:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-15 22:17:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 22:17:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-10-15 22:17:01,704 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-10-15 22:17:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,704 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-10-15 22:17:01,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:17:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-10-15 22:17:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:17:01,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:17:01,706 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-10-15 22:17:01,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376515290] [2020-10-15 22:17:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376515290] [2020-10-15 22:17:01,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:17:01,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520853895] [2020-10-15 22:17:01,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:17:01,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:17:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:17:01,769 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 6 states. [2020-10-15 22:17:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,821 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-10-15 22:17:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:17:01,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 22:17:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,822 INFO L225 Difference]: With dead ends: 112 [2020-10-15 22:17:01,823 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 22:17:01,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:17:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 22:17:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 22:17:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 22:17:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-15 22:17:01,825 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-10-15 22:17:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,825 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-15 22:17:01,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:17:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-15 22:17:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:17:01,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:17:01,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:17:01,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:17:01,827 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:17:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:17:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-10-15 22:17:01,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:17:01,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071544066] [2020-10-15 22:17:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:17:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:17:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:17:01,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071544066] [2020-10-15 22:17:01,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:17:01,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:17:01,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101071215] [2020-10-15 22:17:01,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:17:01,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:17:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:17:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:17:01,867 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-15 22:17:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:17:01,877 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-15 22:17:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:17:01,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:17:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:17:01,878 INFO L225 Difference]: With dead ends: 35 [2020-10-15 22:17:01,878 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:17:01,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:17:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:17:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:17:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:17:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:17:01,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:17:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:17:01,879 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:17:01,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:17:01,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:17:01,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:17:01,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:17:01,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:17:01 BasicIcfg [2020-10-15 22:17:01,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:17:01,896 INFO L168 Benchmark]: Toolchain (without parser) took 4187.42 ms. Allocated memory was 249.6 MB in the beginning and 371.2 MB in the end (delta: 121.6 MB). Free memory was 205.5 MB in the beginning and 262.2 MB in the end (delta: -56.7 MB). Peak memory consumption was 64.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,897 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.41 ms. Allocated memory was 249.6 MB in the beginning and 312.5 MB in the end (delta: 62.9 MB). Free memory was 204.6 MB in the beginning and 268.5 MB in the end (delta: -63.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 312.5 MB. Free memory was 268.5 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,906 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 312.5 MB. Free memory was 265.9 MB in the beginning and 264.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,908 INFO L168 Benchmark]: RCFGBuilder took 433.46 ms. Allocated memory is still 312.5 MB. Free memory was 264.3 MB in the beginning and 242.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,909 INFO L168 Benchmark]: TraceAbstraction took 3006.20 ms. Allocated memory was 312.5 MB in the beginning and 371.2 MB in the end (delta: 58.7 MB). Free memory was 241.4 MB in the beginning and 262.2 MB in the end (delta: -20.8 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:17:01,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 657.41 ms. Allocated memory was 249.6 MB in the beginning and 312.5 MB in the end (delta: 62.9 MB). Free memory was 204.6 MB in the beginning and 268.5 MB in the end (delta: -63.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 312.5 MB. Free memory was 268.5 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 312.5 MB. Free memory was 265.9 MB in the beginning and 264.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 433.46 ms. Allocated memory is still 312.5 MB. Free memory was 264.3 MB in the beginning and 242.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3006.20 ms. Allocated memory was 312.5 MB in the beginning and 371.2 MB in the end (delta: 58.7 MB). Free memory was 241.4 MB in the beginning and 262.2 MB in the end (delta: -20.8 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 859 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 2362 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 157 SDtfs, 114 SDslu, 178 SDs, 0 SdLazy, 97 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2567 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...