/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:22:49,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:22:49,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:22:49,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:22:49,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:22:49,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:22:49,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:22:49,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:22:49,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:22:49,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:22:49,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:22:49,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:22:49,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:22:49,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:22:49,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:22:49,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:22:49,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:22:49,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:22:49,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:22:49,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:22:49,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:22:49,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:22:49,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:22:49,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:22:49,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:22:49,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:22:49,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:22:49,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:22:49,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:22:49,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:22:49,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:22:49,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:22:49,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:22:49,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:22:49,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:22:49,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:22:49,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:22:49,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:22:49,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:22:49,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:22:49,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:22:49,774 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-SP.epf [2020-10-22 02:22:49,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:22:49,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:22:49,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:22:49,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:22:49,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:22:49,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:22:49,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:22:49,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:22:49,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:22:49,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:22:49,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:22:49,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:22:49,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:22:49,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:22:49,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:22:49,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:22:49,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:22:49,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:22:49,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:22:49,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:22:49,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:22:49,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:22:49,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:22:49,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:22:49,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:22:49,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:22:49,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:22:49,807 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:22:49,807 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:22:49,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:22:49,807 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:22:50,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:22:50,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:22:50,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:22:50,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:22:50,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:22:50,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-22 02:22:50,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7b366ab/ae72e93deea340f092a6e307ca4225ab/FLAG746e7276e [2020-10-22 02:22:50,676 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:22:50,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-22 02:22:50,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7b366ab/ae72e93deea340f092a6e307ca4225ab/FLAG746e7276e [2020-10-22 02:22:50,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7b366ab/ae72e93deea340f092a6e307ca4225ab [2020-10-22 02:22:50,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:22:51,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:22:51,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:22:51,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:22:51,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:22:51,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:22:50" (1/1) ... [2020-10-22 02:22:51,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5036aeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51, skipping insertion in model container [2020-10-22 02:22:51,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:22:50" (1/1) ... [2020-10-22 02:22:51,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:22:51,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:22:51,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:22:51,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:22:51,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:22:51,609 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:22:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51 WrapperNode [2020-10-22 02:22:51,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:22:51,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:22:51,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:22:51,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:22:51,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:22:51,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:22:51,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:22:51,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:22:51,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... [2020-10-22 02:22:51,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:22:51,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:22:51,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:22:51,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:22:51,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:22:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:22:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:22:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:22:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:22:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:22:51,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:22:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:22:51,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:22:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:22:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:22:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:22:51,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:22:51,777 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:22:52,077 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:22:52,077 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:22:52,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:22:52 BoogieIcfgContainer [2020-10-22 02:22:52,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:22:52,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:22:52,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:22:52,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:22:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:22:50" (1/3) ... [2020-10-22 02:22:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d313cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:22:52, skipping insertion in model container [2020-10-22 02:22:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:51" (2/3) ... [2020-10-22 02:22:52,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d313cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:22:52, skipping insertion in model container [2020-10-22 02:22:52,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:22:52" (3/3) ... [2020-10-22 02:22:52,089 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2020-10-22 02:22:52,101 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:22:52,101 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:22:52,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:22:52,110 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:22:52,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,143 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,143 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,158 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,158 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:52,160 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:22:52,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 02:22:52,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:22:52,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:22:52,195 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:22:52,195 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:22:52,196 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:22:52,196 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:22:52,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:22:52,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:22:52,210 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:22:52,211 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:52,213 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:52,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:52,261 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-22 02:22:52,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:22:52,266 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-22 02:22:52,268 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-22 02:22:53,738 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 02:22:53,842 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-22 02:22:53,843 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-22 02:22:53,849 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-22 02:22:53,862 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-22 02:22:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-22 02:22:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 02:22:53,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:53,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 02:22:53,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:53,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-22 02:22:53,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:53,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471007596] [2020-10-22 02:22:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:54,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471007596] [2020-10-22 02:22:54,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:54,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:22:54,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1972350063] [2020-10-22 02:22:54,064 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:54,067 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:54,080 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 02:22:54,081 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:54,085 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:54,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:22:54,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:54,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:22:54,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:22:54,103 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-22 02:22:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:54,113 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-22 02:22:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:22:54,114 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-22 02:22:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:54,125 INFO L225 Difference]: With dead ends: 90 [2020-10-22 02:22:54,125 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 02:22:54,127 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 [2020-10-22 02:22:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 02:22:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-22 02:22:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-22 02:22:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-22 02:22:54,166 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-22 02:22:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:54,167 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-22 02:22:54,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:22:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-22 02:22:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-22 02:22:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:54,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:54,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:22:54,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-22 02:22:54,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:54,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629031642] [2020-10-22 02:22:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:54,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629031642] [2020-10-22 02:22:54,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:54,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:22:54,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [729154962] [2020-10-22 02:22:54,291 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:54,292 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:54,293 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-22 02:22:54,294 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:54,296 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:54,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:22:54,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:54,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:22:54,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:22:54,299 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-22 02:22:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:54,352 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-22 02:22:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:54,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-22 02:22:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:54,354 INFO L225 Difference]: With dead ends: 63 [2020-10-22 02:22:54,354 INFO L226 Difference]: Without dead ends: 47 [2020-10-22 02:22:54,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-22 02:22:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-22 02:22:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-22 02:22:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-22 02:22:54,368 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-22 02:22:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:54,370 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-22 02:22:54,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:22:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-22 02:22:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:22:54,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:54,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:54,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:22:54,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:54,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-22 02:22:54,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:54,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860353559] [2020-10-22 02:22:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:54,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860353559] [2020-10-22 02:22:54,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:54,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:54,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [465916448] [2020-10-22 02:22:54,464 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:54,465 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:54,467 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-22 02:22:54,468 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:54,543 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [660#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:22:54,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:22:54,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:54,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:22:54,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:22:54,545 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 6 states. [2020-10-22 02:22:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:54,583 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-22 02:22:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:22:54,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 02:22:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:54,584 INFO L225 Difference]: With dead ends: 36 [2020-10-22 02:22:54,584 INFO L226 Difference]: Without dead ends: 29 [2020-10-22 02:22:54,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-22 02:22:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-22 02:22:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-22 02:22:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-22 02:22:54,588 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-22 02:22:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:54,589 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-22 02:22:54,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:22:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-22 02:22:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:22:54,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:54,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:54,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:22:54,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-22 02:22:54,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:54,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824197764] [2020-10-22 02:22:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:54,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824197764] [2020-10-22 02:22:54,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:54,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:54,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [833198048] [2020-10-22 02:22:54,666 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:54,667 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:54,672 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-22 02:22:54,672 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:54,740 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:54,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:22:54,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:22:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:54,741 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-22 02:22:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:54,772 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-22 02:22:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:54,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:22:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:54,774 INFO L225 Difference]: With dead ends: 37 [2020-10-22 02:22:54,774 INFO L226 Difference]: Without dead ends: 17 [2020-10-22 02:22:54,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-22 02:22:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-22 02:22:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-22 02:22:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-22 02:22:54,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-22 02:22:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:54,777 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-22 02:22:54,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:22:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-22 02:22:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:22:54,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:54,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:54,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:22:54,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-22 02:22:54,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:54,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375148452] [2020-10-22 02:22:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:54,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375148452] [2020-10-22 02:22:54,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:54,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:54,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1641394408] [2020-10-22 02:22:54,835 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:54,836 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:54,838 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:22:54,838 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:54,838 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:54,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:22:54,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:54,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:22:54,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:54,840 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-22 02:22:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:54,861 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-22 02:22:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:54,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:22:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:54,862 INFO L225 Difference]: With dead ends: 16 [2020-10-22 02:22:54,862 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:22:54,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:22:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:22:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:22:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:22:54,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-22 02:22:54,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:54,864 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:22:54,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:22:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:22:54,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:22:54,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:22:54,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:22:54 BasicIcfg [2020-10-22 02:22:54,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:22:54,871 INFO L168 Benchmark]: Toolchain (without parser) took 3873.36 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 100.0 MB in the beginning and 105.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,871 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.99 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.2 MB in the beginning and 156.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,874 INFO L168 Benchmark]: Boogie Preprocessor took 31.85 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 151.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,875 INFO L168 Benchmark]: RCFGBuilder took 384.03 ms. Allocated memory is still 201.3 MB. Free memory was 151.8 MB in the beginning and 130.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,876 INFO L168 Benchmark]: TraceAbstraction took 2787.37 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 129.9 MB in the beginning and 105.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:54,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 605.99 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.2 MB in the beginning and 156.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.85 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 151.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.03 ms. Allocated memory is still 201.3 MB. Free memory was 151.8 MB in the beginning and 130.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2787.37 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 129.9 MB in the beginning and 105.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 435 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 109 SDs, 0 SdLazy, 53 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...