/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:58:14,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:58:14,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:58:14,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:58:14,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:58:14,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:58:14,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:58:14,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:58:14,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:58:14,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:58:14,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:58:14,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:58:14,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:58:14,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:58:14,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:58:14,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:58:14,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:58:14,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:58:14,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:58:14,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:58:14,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:58:14,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:58:14,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:58:14,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:58:14,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:58:14,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:58:14,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:58:14,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:58:14,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:58:14,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:58:14,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:58:14,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:58:14,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:58:14,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:58:14,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:58:14,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:58:14,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:58:14,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:58:14,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:58:14,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:58:14,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:58:14,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:58:14,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:58:14,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:58:14,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:58:14,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:58:14,791 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:58:14,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:58:14,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:58:14,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:58:14,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:58:14,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:58:14,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:58:14,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:58:14,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:58:14,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:58:14,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:58:14,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:58:14,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:58:14,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:58:14,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:58:14,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:58:14,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:58:14,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:58:14,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:58:14,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:58:14,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:58:15,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:58:15,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:58:15,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:58:15,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:58:15,116 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:58:15,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-04-17 17:58:15,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714c6c96a/e289029f2f874be4b6406a6de53df20c/FLAGc452d957e [2020-04-17 17:58:15,664 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:58:15,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-04-17 17:58:15,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714c6c96a/e289029f2f874be4b6406a6de53df20c/FLAGc452d957e [2020-04-17 17:58:15,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714c6c96a/e289029f2f874be4b6406a6de53df20c [2020-04-17 17:58:16,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:58:16,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:58:16,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:58:16,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:58:16,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:58:16,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:58:15" (1/1) ... [2020-04-17 17:58:16,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16, skipping insertion in model container [2020-04-17 17:58:16,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:58:15" (1/1) ... [2020-04-17 17:58:16,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:58:16,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:58:16,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:58:16,591 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:58:16,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:58:16,755 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:58:16,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16 WrapperNode [2020-04-17 17:58:16,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:58:16,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:58:16,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:58:16,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:58:16,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:58:16,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:58:16,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:58:16,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:58:16,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (1/1) ... [2020-04-17 17:58:16,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:58:16,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:58:16,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:58:16,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:58:16,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (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 [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:58:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:58:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:58:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:58:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:58:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:58:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:58:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:58:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:58:16,897 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:58:17,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:58:17,300 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:58:17,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:58:17 BoogieIcfgContainer [2020-04-17 17:58:17,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:58:17,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:58:17,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:58:17,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:58:17,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:58:15" (1/3) ... [2020-04-17 17:58:17,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a50dac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:58:17, skipping insertion in model container [2020-04-17 17:58:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:58:16" (2/3) ... [2020-04-17 17:58:17,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a50dac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:58:17, skipping insertion in model container [2020-04-17 17:58:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:58:17" (3/3) ... [2020-04-17 17:58:17,314 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-04-17 17:58:17,325 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:58:17,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:58:17,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:58:17,334 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:58:17,360 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,361 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,363 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,364 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,364 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,364 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,364 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,365 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,365 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,365 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,365 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,366 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,366 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,366 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,367 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,367 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,367 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,372 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,372 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,373 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,378 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,379 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,379 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,379 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,382 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,382 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,382 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,382 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:58:17,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:58:17,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:58:17,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:58:17,417 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:58:17,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:58:17,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:58:17,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:58:17,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:58:17,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:58:17,432 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-17 17:58:17,435 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:58:17,478 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:58:17,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:58:17,484 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:58:17,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-17 17:58:17,514 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-17 17:58:17,515 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:58:17,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:58:17,521 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-17 17:58:17,522 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:58:19,116 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-17 17:58:19,116 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-17 17:58:19,123 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 17:58:19,161 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-17 17:58:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-17 17:58:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:58:19,173 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:19,174 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:19,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-17 17:58:19,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:19,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315889151] [2020-04-17 17:58:19,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:19,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315889151] [2020-04-17 17:58:19,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:19,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:58:19,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335347207] [2020-04-17 17:58:19,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:58:19,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:19,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:58:19,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:58:19,393 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-17 17:58:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:19,423 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-17 17:58:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:58:19,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 17:58:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:19,448 INFO L225 Difference]: With dead ends: 274 [2020-04-17 17:58:19,448 INFO L226 Difference]: Without dead ends: 226 [2020-04-17 17:58:19,449 INFO L678 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 [2020-04-17 17:58:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-17 17:58:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-17 17:58:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-17 17:58:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-17 17:58:19,515 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-17 17:58:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:19,516 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-17 17:58:19,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:58:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-17 17:58:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:58:19,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:19,518 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:19,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-17 17:58:19,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:19,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371185781] [2020-04-17 17:58:19,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:19,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371185781] [2020-04-17 17:58:19,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:19,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:58:19,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012226374] [2020-04-17 17:58:19,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:58:19,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:58:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:58:19,674 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-17 17:58:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:19,730 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-17 17:58:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:58:19,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:58:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:19,739 INFO L225 Difference]: With dead ends: 250 [2020-04-17 17:58:19,739 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 17:58:19,740 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 17:58:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 17:58:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 17:58:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-17 17:58:19,781 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-17 17:58:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:19,784 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-17 17:58:19,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:58:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-17 17:58:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:58:19,789 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:19,789 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:19,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:19,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-17 17:58:19,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:19,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449823726] [2020-04-17 17:58:19,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:19,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449823726] [2020-04-17 17:58:19,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:19,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:58:19,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252111195] [2020-04-17 17:58:19,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:58:19,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:19,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:58:19,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:19,889 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-04-17 17:58:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:19,951 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-04-17 17:58:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:58:19,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 17:58:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:19,954 INFO L225 Difference]: With dead ends: 262 [2020-04-17 17:58:19,954 INFO L226 Difference]: Without dead ends: 154 [2020-04-17 17:58:19,955 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:58:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-17 17:58:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-17 17:58:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-17 17:58:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-04-17 17:58:19,972 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-04-17 17:58:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:19,972 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-04-17 17:58:19,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:58:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-04-17 17:58:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:58:19,977 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:19,977 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:19,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-04-17 17:58:19,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:19,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-17 17:58:19,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-17 17:58:20,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:58:20,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034899749] [2020-04-17 17:58:20,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:58:20,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:58:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:58:20,085 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-04-17 17:58:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,114 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-04-17 17:58:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:58:20,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:58:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,116 INFO L225 Difference]: With dead ends: 174 [2020-04-17 17:58:20,116 INFO L226 Difference]: Without dead ends: 150 [2020-04-17 17:58:20,117 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-17 17:58:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-17 17:58:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-17 17:58:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-17 17:58:20,125 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-17 17:58:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,126 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-17 17:58:20,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:58:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-17 17:58:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:58:20,128 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:20,128 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:20,128 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:20,129 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-17 17:58:20,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:20,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774551782] [2020-04-17 17:58:20,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774551782] [2020-04-17 17:58:20,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:58:20,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437751622] [2020-04-17 17:58:20,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:58:20,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:58:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:58:20,207 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-04-17 17:58:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,242 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-17 17:58:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:58:20,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:58:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,244 INFO L225 Difference]: With dead ends: 164 [2020-04-17 17:58:20,244 INFO L226 Difference]: Without dead ends: 128 [2020-04-17 17:58:20,244 INFO L678 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 [2020-04-17 17:58:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-17 17:58:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-17 17:58:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-17 17:58:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-17 17:58:20,250 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-17 17:58:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,251 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-17 17:58:20,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:58:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-17 17:58:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:58:20,252 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:20,252 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:20,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-17 17:58:20,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844713181] [2020-04-17 17:58:20,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844713181] [2020-04-17 17:58:20,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:58:20,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073052090] [2020-04-17 17:58:20,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:58:20,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:58:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:20,307 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-04-17 17:58:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,382 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-17 17:58:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:58:20,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:58:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,384 INFO L225 Difference]: With dead ends: 116 [2020-04-17 17:58:20,384 INFO L226 Difference]: Without dead ends: 92 [2020-04-17 17:58:20,384 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:58:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-17 17:58:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-17 17:58:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-17 17:58:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-17 17:58:20,388 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-17 17:58:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,389 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-17 17:58:20,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:58:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-17 17:58:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:58:20,410 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:20,410 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:20,410 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-17 17:58:20,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:20,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134427278] [2020-04-17 17:58:20,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134427278] [2020-04-17 17:58:20,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:58:20,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765122091] [2020-04-17 17:58:20,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:58:20,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:58:20,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:58:20,483 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-04-17 17:58:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,518 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-17 17:58:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:58:20,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:58:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,520 INFO L225 Difference]: With dead ends: 120 [2020-04-17 17:58:20,520 INFO L226 Difference]: Without dead ends: 94 [2020-04-17 17:58:20,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-17 17:58:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-17 17:58:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-17 17:58:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-17 17:58:20,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-17 17:58:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,528 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-17 17:58:20,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:58:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-17 17:58:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:58:20,530 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:20,530 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:20,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:20,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-17 17:58:20,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:20,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905330040] [2020-04-17 17:58:20,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905330040] [2020-04-17 17:58:20,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:58:20,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073725382] [2020-04-17 17:58:20,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:58:20,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:58:20,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:58:20,621 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-04-17 17:58:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,658 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-04-17 17:58:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:58:20,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:58:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,660 INFO L225 Difference]: With dead ends: 113 [2020-04-17 17:58:20,660 INFO L226 Difference]: Without dead ends: 70 [2020-04-17 17:58:20,661 INFO L678 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 [2020-04-17 17:58:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-04-17 17:58:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-04-17 17:58:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 17:58:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-04-17 17:58:20,663 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-04-17 17:58:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,664 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-04-17 17:58:20,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:58:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-04-17 17:58:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:58:20,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:58:20,665 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:58:20,665 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:58:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:58:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-04-17 17:58:20,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:58:20,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419679508] [2020-04-17 17:58:20,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:58:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:58:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:58:20,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419679508] [2020-04-17 17:58:20,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:58:20,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 17:58:20,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931281977] [2020-04-17 17:58:20,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:58:20,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:58:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:58:20,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:58:20,756 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-04-17 17:58:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:58:20,793 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-17 17:58:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:58:20,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 17:58:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:58:20,794 INFO L225 Difference]: With dead ends: 58 [2020-04-17 17:58:20,794 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:58:20,794 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:58:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:58:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:58:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:58:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:58:20,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-17 17:58:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:58:20,795 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:58:20,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:58:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:58:20,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:58:20,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:58:20 BasicIcfg [2020-04-17 17:58:20,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:58:20,802 INFO L168 Benchmark]: Toolchain (without parser) took 4793.07 ms. Allocated memory was 138.9 MB in the beginning and 245.9 MB in the end (delta: 107.0 MB). Free memory was 101.9 MB in the beginning and 171.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,803 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.69 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 159.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.38 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,806 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,807 INFO L168 Benchmark]: RCFGBuilder took 473.59 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,808 INFO L168 Benchmark]: TraceAbstraction took 3493.32 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 133.1 MB in the beginning and 171.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:58:20,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.69 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 159.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.38 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 156.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.51 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.59 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3493.32 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 133.1 MB in the beginning and 171.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 188 SDtfs, 171 SDslu, 276 SDs, 0 SdLazy, 115 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3462 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...