/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/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:23:24,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:23:24,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:23:24,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:23:24,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:23:24,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:23:24,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:23:24,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:23:24,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:23:24,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:23:24,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:23:24,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:23:24,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:23:24,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:23:24,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:23:24,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:23:24,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:23:24,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:23:24,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:23:24,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:23:24,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:23:24,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:23:24,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:23:24,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:23:24,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 02:23:24,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 02:23:24,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 02:23:24,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 02:23:24,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 02:23:24,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 02:23:24,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:23:24,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:23:24,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:23:24,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:23:24,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:23:24,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:23:24,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:23:24,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:23:24,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:23:24,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:23:24,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:23:24,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:23:24,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:23:24,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:23:24,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:23:24,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:23:24,660 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:23:24,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:23:24,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:23:24,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:23:24,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:23:24,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:23:24,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:23:24,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:23:24,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:23:24,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:23:24,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:23:24,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:23:24,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:23:24,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:23:24,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:23:24,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:23:24,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:23:24,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:23:24,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:23:24,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:23:24,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:23:24,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:23:24,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:23:24,666 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:23:24,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:23:24,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:23:24,667 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:23:25,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:23:25,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:23:25,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:23:25,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:23:25,138 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:23:25,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-18 02:23:25,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379e706e8/26e4d982e5934359991b66d5d5ede877/FLAG783a293d2 [2020-09-18 02:23:25,861 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:23:25,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-18 02:23:25,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379e706e8/26e4d982e5934359991b66d5d5ede877/FLAG783a293d2 [2020-09-18 02:23:26,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379e706e8/26e4d982e5934359991b66d5d5ede877 [2020-09-18 02:23:26,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:23:26,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:23:26,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:26,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:23:26,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:23:26,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ece116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26, skipping insertion in model container [2020-09-18 02:23:26,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:23:26,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:23:26,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:26,741 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:23:26,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:23:26,888 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:23:26,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26 WrapperNode [2020-09-18 02:23:26,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:23:26,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:26,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:23:26,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:23:26,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:23:26,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:23:26,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:23:26,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:23:26,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (1/1) ... [2020-09-18 02:23:26,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:23:26,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:23:26,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:23:26,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:23:26,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (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 [2020-09-18 02:23:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:23:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:23:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:23:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:23:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:23:27,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:23:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:23:27,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:23:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:23:27,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:23:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:23:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:23:27,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:23:27,074 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:23:27,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:23:27,478 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:23:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:27 BoogieIcfgContainer [2020-09-18 02:23:27,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:23:27,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:23:27,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:23:27,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:23:27,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:23:26" (1/3) ... [2020-09-18 02:23:27,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:27, skipping insertion in model container [2020-09-18 02:23:27,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:23:26" (2/3) ... [2020-09-18 02:23:27,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:23:27, skipping insertion in model container [2020-09-18 02:23:27,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:23:27" (3/3) ... [2020-09-18 02:23:27,493 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-09-18 02:23:27,505 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:23:27,506 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:23:27,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:23:27,518 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:23:27,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,552 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:23:27,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:23:27,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:23:27,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:23:27,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:23:27,626 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:23:27,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:23:27,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:23:27,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:23:27,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:23:27,646 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:27,648 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:27,702 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:27,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:27,709 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:23:27,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 02:23:27,741 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 02:23:27,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:23:27,742 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:23:27,744 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:23:27,745 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:23:29,175 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 02:23:29,346 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-18 02:23:29,452 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-18 02:23:29,453 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-18 02:23:29,457 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 02:23:29,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:23:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:23:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:23:29,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:29,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:29,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-18 02:23:29,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:29,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554198469] [2020-09-18 02:23:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:29,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554198469] [2020-09-18 02:23:29,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:29,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:29,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1063721508] [2020-09-18 02:23:29,778 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:29,782 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:29,800 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:23:29,800 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:29,802 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:29,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:29,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:29,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:29,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:29,828 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:23:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:29,914 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-18 02:23:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:29,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:23:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:29,941 INFO L225 Difference]: With dead ends: 294 [2020-09-18 02:23:29,941 INFO L226 Difference]: Without dead ends: 230 [2020-09-18 02:23:29,943 INFO L675 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 [2020-09-18 02:23:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-18 02:23:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-18 02:23:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-18 02:23:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-18 02:23:30,021 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-18 02:23:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,022 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-18 02:23:30,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-18 02:23:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:23:30,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:23:30,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-18 02:23:30,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:30,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171112788] [2020-09-18 02:23:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:30,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171112788] [2020-09-18 02:23:30,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:30,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:23:30,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1671148575] [2020-09-18 02:23:30,149 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:30,150 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:30,153 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 02:23:30,153 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:30,204 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:30,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:30,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:30,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:30,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:30,207 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-18 02:23:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:30,217 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-18 02:23:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:30,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:23:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:30,220 INFO L225 Difference]: With dead ends: 202 [2020-09-18 02:23:30,220 INFO L226 Difference]: Without dead ends: 202 [2020-09-18 02:23:30,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-18 02:23:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-18 02:23:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-18 02:23:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-18 02:23:30,241 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-18 02:23:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,242 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-18 02:23:30,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-18 02:23:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:23:30,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:23:30,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:30,245 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-18 02:23:30,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:30,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271957864] [2020-09-18 02:23:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:30,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271957864] [2020-09-18 02:23:30,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:30,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:30,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1774999701] [2020-09-18 02:23:30,318 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:30,319 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:30,321 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-18 02:23:30,321 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:30,325 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:23:30,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:23:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:30,326 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-18 02:23:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:30,355 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-18 02:23:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:23:30,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-18 02:23:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:30,360 INFO L225 Difference]: With dead ends: 266 [2020-09-18 02:23:30,360 INFO L226 Difference]: Without dead ends: 140 [2020-09-18 02:23:30,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:23:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-18 02:23:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-18 02:23:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-18 02:23:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-18 02:23:30,373 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-18 02:23:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,374 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-18 02:23:30,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:23:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-18 02:23:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:23:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:23:30,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-18 02:23:30,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:30,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238904902] [2020-09-18 02:23:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:30,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238904902] [2020-09-18 02:23:30,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:30,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:23:30,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1980388424] [2020-09-18 02:23:30,470 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:30,471 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:30,473 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-18 02:23:30,473 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:30,480 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:30,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:30,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:30,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:30,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:30,481 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-18 02:23:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:30,521 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-18 02:23:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:30,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 02:23:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:30,523 INFO L225 Difference]: With dead ends: 165 [2020-09-18 02:23:30,524 INFO L226 Difference]: Without dead ends: 113 [2020-09-18 02:23:30,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-18 02:23:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-18 02:23:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-18 02:23:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-18 02:23:30,533 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-18 02:23:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,533 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-18 02:23:30,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-18 02:23:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:23:30,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:23:30,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-18 02:23:30,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:30,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503748260] [2020-09-18 02:23:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:30,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503748260] [2020-09-18 02:23:30,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:30,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:30,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [340733898] [2020-09-18 02:23:30,623 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:30,625 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:30,629 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-18 02:23:30,629 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:30,644 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2994#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:30,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:23:30,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:23:30,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:23:30,645 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-18 02:23:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:30,693 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-18 02:23:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:23:30,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:23:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:30,695 INFO L225 Difference]: With dead ends: 111 [2020-09-18 02:23:30,695 INFO L226 Difference]: Without dead ends: 80 [2020-09-18 02:23:30,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-18 02:23:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-18 02:23:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-18 02:23:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-18 02:23:30,701 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-18 02:23:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,701 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-18 02:23:30,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:23:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-18 02:23:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:23:30,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:23:30,703 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-18 02:23:30,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:30,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693059614] [2020-09-18 02:23:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:30,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693059614] [2020-09-18 02:23:30,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:30,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:23:30,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1235306712] [2020-09-18 02:23:30,881 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:30,883 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:30,887 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-18 02:23:30,888 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:30,910 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3274#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:23:30,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:23:30,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:30,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:23:30,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:23:30,912 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-18 02:23:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:30,983 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-18 02:23:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:23:30,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:23:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:30,984 INFO L225 Difference]: With dead ends: 75 [2020-09-18 02:23:30,984 INFO L226 Difference]: Without dead ends: 66 [2020-09-18 02:23:30,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:23:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-18 02:23:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-18 02:23:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-18 02:23:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-18 02:23:30,997 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-18 02:23:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:30,997 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-18 02:23:30,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:23:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-18 02:23:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:30,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:30,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:30,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:23:30,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-18 02:23:31,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:31,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3719809] [2020-09-18 02:23:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:31,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3719809] [2020-09-18 02:23:31,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:31,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:31,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [874904555] [2020-09-18 02:23:31,081 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:31,084 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:31,089 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-18 02:23:31,089 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:31,123 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:31,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:31,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:31,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:31,124 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-18 02:23:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:31,148 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-18 02:23:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:31,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:31,149 INFO L225 Difference]: With dead ends: 85 [2020-09-18 02:23:31,149 INFO L226 Difference]: Without dead ends: 48 [2020-09-18 02:23:31,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-18 02:23:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-18 02:23:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-18 02:23:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-18 02:23:31,153 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-18 02:23:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:31,153 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-18 02:23:31,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-18 02:23:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:31,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:31,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:23:31,158 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:31,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-18 02:23:31,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:31,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335879683] [2020-09-18 02:23:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:31,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335879683] [2020-09-18 02:23:31,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:31,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:31,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1225415180] [2020-09-18 02:23:31,255 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:31,257 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:31,265 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-18 02:23:31,265 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:31,291 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:31,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:31,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:31,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:31,293 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-18 02:23:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:31,319 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-18 02:23:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:23:31,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:31,320 INFO L225 Difference]: With dead ends: 73 [2020-09-18 02:23:31,320 INFO L226 Difference]: Without dead ends: 42 [2020-09-18 02:23:31,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-18 02:23:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-18 02:23:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-18 02:23:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-18 02:23:31,329 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-18 02:23:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:31,329 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-18 02:23:31,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-18 02:23:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:23:31,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:23:31,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:23:31,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:23:31,331 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:23:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:23:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-18 02:23:31,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:23:31,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131145796] [2020-09-18 02:23:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:23:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:23:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:23:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131145796] [2020-09-18 02:23:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:23:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:23:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1016427956] [2020-09-18 02:23:31,397 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:23:31,400 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:23:31,405 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-18 02:23:31,406 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:23:31,435 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:23:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:23:31,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:23:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:23:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:23:31,436 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-18 02:23:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:23:31,447 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-18 02:23:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:23:31,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:23:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:23:31,448 INFO L225 Difference]: With dead ends: 41 [2020-09-18 02:23:31,448 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:23:31,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:23:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:23:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:23:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:23:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:23:31,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:23:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:23:31,450 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:23:31,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:23:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:23:31,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:23:31,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-18 02:23:31,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:23:31 BasicIcfg [2020-09-18 02:23:31,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:23:31,458 INFO L168 Benchmark]: Toolchain (without parser) took 5347.57 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 100.5 MB in the beginning and 136.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,459 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.57 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,461 INFO L168 Benchmark]: Boogie Preprocessor took 43.82 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,462 INFO L168 Benchmark]: RCFGBuilder took 488.95 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,463 INFO L168 Benchmark]: TraceAbstraction took 3970.85 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.0 MB in the beginning and 136.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-09-18 02:23:31,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.57 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.82 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.95 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3970.85 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 134.0 MB in the beginning and 136.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 172 SDtfs, 127 SDslu, 210 SDs, 0 SdLazy, 123 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 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...