/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:38:27,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:38:27,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:38:27,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:38:27,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:38:27,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:38:27,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:38:27,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:38:27,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:38:27,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:38:27,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:38:27,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:38:27,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:38:27,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:38:27,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:38:27,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:38:27,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:38:27,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:38:27,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:38:27,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:38:27,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:38:27,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:38:27,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:38:27,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:38:27,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:38:27,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:38:27,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:38:27,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:38:27,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:38:27,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:38:27,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:38:27,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:38:27,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:38:27,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:38:27,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:38:27,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:38:27,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:38:27,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:38:27,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:38:27,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:38:27,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:38:27,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:38:27,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:38:27,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:38:27,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:38:27,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:38:27,520 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:38:27,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:38:27,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:38:27,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:38:27,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:38:27,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:38:27,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:38:27,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:38:27,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:38:27,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:38:27,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:38:27,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:38:27,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:38:27,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:38:27,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:38:27,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:38:27,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:38:27,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:38:27,524 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:38:27,525 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:38:27,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:38:27,525 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:38:27,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:38:27,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:38:27,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:38:27,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:38:27,883 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:38:27,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-16 13:38:27,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d40b712c/2f5e19437462418f9b331584ffb12e33/FLAG164b686dd [2020-10-16 13:38:28,545 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:38:28,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-10-16 13:38:28,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d40b712c/2f5e19437462418f9b331584ffb12e33/FLAG164b686dd [2020-10-16 13:38:28,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d40b712c/2f5e19437462418f9b331584ffb12e33 [2020-10-16 13:38:28,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:38:28,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:38:28,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:38:28,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:38:28,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:38:28,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:28" (1/1) ... [2020-10-16 13:38:28,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3688e0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:28, skipping insertion in model container [2020-10-16 13:38:28,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:28" (1/1) ... [2020-10-16 13:38:28,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:38:28,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:38:29,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:38:29,359 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:38:29,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:38:29,496 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:38:29,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29 WrapperNode [2020-10-16 13:38:29,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:38:29,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:38:29,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:38:29,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:38:29,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:38:29,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:38:29,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:38:29,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:38:29,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (1/1) ... [2020-10-16 13:38:29,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:38:29,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:38:29,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:38:29,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:38:29,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (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 13:38:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:38:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:38:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:38:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:38:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:38:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:38:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:38:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:38:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:38:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:38:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:38:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:38:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:38:29,682 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 13:38:30,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:38:30,110 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:38:30,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:30 BoogieIcfgContainer [2020-10-16 13:38:30,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:38:30,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:38:30,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:38:30,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:38:30,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:38:28" (1/3) ... [2020-10-16 13:38:30,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be877ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:30, skipping insertion in model container [2020-10-16 13:38:30,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:29" (2/3) ... [2020-10-16 13:38:30,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be877ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:30, skipping insertion in model container [2020-10-16 13:38:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:30" (3/3) ... [2020-10-16 13:38:30,122 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-10-16 13:38:30,134 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:38:30,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:38:30,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:38:30,144 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:38:30,172 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,176 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,195 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,195 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:30,198 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:38:30,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:38:30,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:38:30,234 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:38:30,234 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:38:30,234 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:38:30,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:38:30,234 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:38:30,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:38:30,235 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:38:30,249 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:38:30,250 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-16 13:38:30,252 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-16 13:38:30,253 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 13:38:30,295 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 13:38:30,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:38:30,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:38:30,309 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:38:31,430 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-16 13:38:31,526 INFO L132 LiptonReduction]: Checked pairs total: 2579 [2020-10-16 13:38:31,527 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 13:38:31,534 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 13:38:31,566 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 13:38:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 13:38:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:38:31,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:31,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:31,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-10-16 13:38:31,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:31,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259070335] [2020-10-16 13:38:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:31,772 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 13:38:31,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259070335] [2020-10-16 13:38:31,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:31,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:38:31,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [657150702] [2020-10-16 13:38:31,776 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:31,779 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:31,792 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:38:31,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:31,796 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:31,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:38:31,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:31,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:38:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:38:31,810 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 13:38:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:31,833 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 13:38:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:38:31,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:38:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:31,852 INFO L225 Difference]: With dead ends: 362 [2020-10-16 13:38:31,852 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 13:38:31,854 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 13:38:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 13:38:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 13:38:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 13:38:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 13:38:31,929 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 13:38:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:31,930 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 13:38:31,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:38:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 13:38:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:38:31,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:31,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:31,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:38:31,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:31,933 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-10-16 13:38:31,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:31,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924039526] [2020-10-16 13:38:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:32,056 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 13:38:32,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924039526] [2020-10-16 13:38:32,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:32,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:38:32,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [243496570] [2020-10-16 13:38:32,057 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:32,058 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:32,060 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:38:32,060 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:32,061 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:32,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:38:32,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:32,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:38:32,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:38:32,063 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 13:38:32,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:32,099 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-16 13:38:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:38:32,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:38:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:32,103 INFO L225 Difference]: With dead ends: 330 [2020-10-16 13:38:32,103 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 13:38:32,104 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 13:38:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 13:38:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-16 13:38:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-16 13:38:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-16 13:38:32,139 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-16 13:38:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:32,139 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-16 13:38:32,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:38:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-16 13:38:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:38:32,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:32,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:32,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:38:32,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-10-16 13:38:32,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:32,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072186581] [2020-10-16 13:38:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:32,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072186581] [2020-10-16 13:38:32,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:32,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:38:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2087647645] [2020-10-16 13:38:32,277 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:32,278 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:32,280 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-10-16 13:38:32,280 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:32,291 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:32,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:38:32,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:38:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:32,293 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-16 13:38:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:32,356 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-16 13:38:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:38:32,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 13:38:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:32,359 INFO L225 Difference]: With dead ends: 290 [2020-10-16 13:38:32,360 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 13:38:32,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:38:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 13:38:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-16 13:38:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-16 13:38:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-16 13:38:32,375 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-16 13:38:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:32,376 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-16 13:38:32,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:38:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-16 13:38:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:38:32,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:32,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:32,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:38:32,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-10-16 13:38:32,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:32,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815333545] [2020-10-16 13:38:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:32,463 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 13:38:32,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815333545] [2020-10-16 13:38:32,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:32,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:38:32,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1485241318] [2020-10-16 13:38:32,465 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:32,466 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:32,468 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-16 13:38:32,468 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:32,531 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:32,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:38:32,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:32,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:38:32,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:32,532 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-16 13:38:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:32,578 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-10-16 13:38:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:38:32,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:38:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:32,580 INFO L225 Difference]: With dead ends: 302 [2020-10-16 13:38:32,580 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 13:38:32,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:38:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 13:38:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 13:38:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 13:38:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-10-16 13:38:32,588 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-10-16 13:38:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:32,588 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-10-16 13:38:32,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:38:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-10-16 13:38:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:38:32,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:32,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:32,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:38:32,590 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-10-16 13:38:32,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:32,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558688401] [2020-10-16 13:38:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:32,644 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 13:38:32,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558688401] [2020-10-16 13:38:32,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:32,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:38:32,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [663049898] [2020-10-16 13:38:32,646 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:32,647 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:32,649 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-10-16 13:38:32,649 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:32,656 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:32,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:38:32,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:32,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:38:32,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:32,657 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-10-16 13:38:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:32,702 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-16 13:38:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:38:32,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:38:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:32,703 INFO L225 Difference]: With dead ends: 176 [2020-10-16 13:38:32,703 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 13:38:32,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:38:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 13:38:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 13:38:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 13:38:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-16 13:38:32,708 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-10-16 13:38:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:32,708 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-16 13:38:32,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:38:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-16 13:38:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:38:32,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:32,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:32,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:38:32,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:32,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:32,710 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-10-16 13:38:32,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:32,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918235736] [2020-10-16 13:38:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:32,794 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 13:38:32,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918235736] [2020-10-16 13:38:32,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:32,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:38:32,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1812064725] [2020-10-16 13:38:32,796 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:32,798 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:32,801 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-16 13:38:32,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:32,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:32,890 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:32,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:38:32,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:38:32,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:38:32,892 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-16 13:38:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:32,926 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-16 13:38:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:38:32,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:38:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:32,928 INFO L225 Difference]: With dead ends: 91 [2020-10-16 13:38:32,928 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 13:38:32,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 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 13:38:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 13:38:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-16 13:38:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 13:38:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-16 13:38:32,932 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-16 13:38:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:32,933 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-16 13:38:32,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:38:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-16 13:38:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:38:32,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:32,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:32,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:38:32,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:32,939 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-10-16 13:38:32,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:32,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75297331] [2020-10-16 13:38:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:33,026 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 13:38:33,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75297331] [2020-10-16 13:38:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:33,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:38:33,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303569621] [2020-10-16 13:38:33,028 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:33,030 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:33,035 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-10-16 13:38:33,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:33,102 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4597#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:38:33,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:38:33,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:33,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:38:33,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:38:33,103 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 6 states. [2020-10-16 13:38:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:33,143 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-16 13:38:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:38:33,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 13:38:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:33,144 INFO L225 Difference]: With dead ends: 65 [2020-10-16 13:38:33,144 INFO L226 Difference]: Without dead ends: 50 [2020-10-16 13:38:33,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:38:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-16 13:38:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-16 13:38:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 13:38:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-16 13:38:33,147 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-16 13:38:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:33,148 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-16 13:38:33,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:38:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-16 13:38:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:38:33,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:33,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:33,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:38:33,149 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-10-16 13:38:33,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:33,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130976358] [2020-10-16 13:38:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:33,208 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 13:38:33,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130976358] [2020-10-16 13:38:33,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:33,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:38:33,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1578195137] [2020-10-16 13:38:33,210 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:33,212 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:33,216 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-10-16 13:38:33,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:33,258 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4771#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:38:33,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:38:33,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:33,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:38:33,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:38:33,259 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 7 states. [2020-10-16 13:38:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:33,300 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-16 13:38:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:38:33,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-16 13:38:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:33,302 INFO L225 Difference]: With dead ends: 43 [2020-10-16 13:38:33,302 INFO L226 Difference]: Without dead ends: 37 [2020-10-16 13:38:33,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:38:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-16 13:38:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-16 13:38:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 13:38:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-16 13:38:33,304 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-16 13:38:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:33,304 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-16 13:38:33,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:38:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-16 13:38:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:38:33,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:33,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:33,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:38:33,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-10-16 13:38:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:33,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123825094] [2020-10-16 13:38:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:33,382 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 13:38:33,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123825094] [2020-10-16 13:38:33,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:33,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:38:33,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1151560050] [2020-10-16 13:38:33,383 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:33,386 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:33,392 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 42 transitions. [2020-10-16 13:38:33,393 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:33,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:33,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:38:33,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:33,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:38:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:33,444 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-16 13:38:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:33,466 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-16 13:38:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:38:33,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 13:38:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:33,466 INFO L225 Difference]: With dead ends: 36 [2020-10-16 13:38:33,467 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:38:33,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:38:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:38:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:38:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:38:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:38:33,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:38:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:33,468 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:38:33,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:38:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:38:33,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:38:33,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:38:33,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:38:33 BasicIcfg [2020-10-16 13:38:33,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:38:33,474 INFO L168 Benchmark]: Toolchain (without parser) took 4628.86 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 101.8 MB in the beginning and 122.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,475 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.43 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 156.5 MB in the end (delta: -55.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.27 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 153.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,478 INFO L168 Benchmark]: Boogie Preprocessor took 55.74 ms. Allocated memory is still 201.9 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,478 INFO L168 Benchmark]: RCFGBuilder took 503.45 ms. Allocated memory is still 201.9 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,479 INFO L168 Benchmark]: TraceAbstraction took 3358.30 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 129.6 MB in the beginning and 122.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:33,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.43 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.5 MB in the beginning and 156.5 MB in the end (delta: -55.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.27 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 153.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.74 ms. Allocated memory is still 201.9 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.45 ms. Allocated memory is still 201.9 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3358.30 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 129.6 MB in the beginning and 122.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 687 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 79 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2579 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 183 SDtfs, 185 SDslu, 296 SDs, 0 SdLazy, 137 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4323 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...