/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:37:09,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:37:09,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:37:09,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:37:09,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:37:09,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:37:09,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:37:09,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:37:09,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:37:09,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:37:09,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:37:09,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:37:09,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:37:09,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:37:09,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:37:09,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:37:09,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:37:09,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:37:09,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:37:09,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:37:09,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:37:09,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:37:09,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:37:09,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:37:09,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:37:09,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:37:09,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:37:09,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:37:09,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:37:09,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:37:09,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:37:09,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:37:09,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:37:09,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:37:09,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:37:09,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:37:09,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:37:09,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:37:09,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:37:09,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:37:09,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:37:09,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:37:09,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:37:09,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:37:09,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:37:09,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:37:09,143 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:37:09,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:37:09,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:37:09,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:37:09,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:37:09,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:37:09,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:37:09,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:37:09,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:37:09,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:37:09,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:37:09,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:37:09,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:37:09,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:37:09,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:37:09,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:37:09,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:37:09,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:37:09,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:37:09,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:37:09,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:37:09,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:37:09,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:37:09,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:37:09,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:37:09,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:37:09,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:37:09,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:37:09,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:37:09,439 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:37:09,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-04-17 22:37:09,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7860e161c/9ef4c5117c3d4d25a0a3078964b8adba/FLAGc84a534a7 [2020-04-17 22:37:10,070 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:37:10,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-04-17 22:37:10,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7860e161c/9ef4c5117c3d4d25a0a3078964b8adba/FLAGc84a534a7 [2020-04-17 22:37:10,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7860e161c/9ef4c5117c3d4d25a0a3078964b8adba [2020-04-17 22:37:10,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:37:10,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:37:10,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:10,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:37:10,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:37:10,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:10" (1/1) ... [2020-04-17 22:37:10,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb2786e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:10, skipping insertion in model container [2020-04-17 22:37:10,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:10" (1/1) ... [2020-04-17 22:37:10,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:37:10,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:37:10,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:10,937 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:37:11,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:11,073 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:37:11,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11 WrapperNode [2020-04-17 22:37:11,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:11,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:11,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:37:11,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:37:11,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:11,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:37:11,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:37:11,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:37:11,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (1/1) ... [2020-04-17 22:37:11,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:37:11,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:37:11,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:37:11,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:37:11,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (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 22:37:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:37:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:37:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:37:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:37:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:37:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:37:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:37:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:37:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:37:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:37:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:37:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:37:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:37:11,227 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 22:37:11,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:37:11,615 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:37:11,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:11 BoogieIcfgContainer [2020-04-17 22:37:11,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:37:11,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:37:11,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:37:11,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:37:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:37:10" (1/3) ... [2020-04-17 22:37:11,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebbc309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:11, skipping insertion in model container [2020-04-17 22:37:11,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:11" (2/3) ... [2020-04-17 22:37:11,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebbc309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:11, skipping insertion in model container [2020-04-17 22:37:11,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:11" (3/3) ... [2020-04-17 22:37:11,629 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-04-17 22:37:11,638 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:37:11,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:37:11,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:37:11,649 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:37:11,676 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,676 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,677 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,677 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,677 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,678 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,679 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,679 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,679 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,681 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,681 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,681 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,686 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,686 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,687 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,687 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,696 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,696 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:11,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:37:11,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:37:11,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:37:11,734 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:37:11,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:37:11,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:37:11,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:37:11,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:37:11,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:37:11,750 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:11,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:11,797 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:11,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:11,802 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:11,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:11,827 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:11,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:11,828 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:11,830 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:37:11,831 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:37:13,450 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:37:13,654 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-17 22:37:13,805 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-17 22:37:13,806 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-17 22:37:13,813 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 22:37:13,854 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:37:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:37:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:37:13,866 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:13,867 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:13,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:13,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-17 22:37:13,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:13,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145067637] [2020-04-17 22:37:13,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:14,102 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 22:37:14,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145067637] [2020-04-17 22:37:14,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:14,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:14,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057187515] [2020-04-17 22:37:14,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:14,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:14,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:14,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,135 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:37:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:14,225 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 22:37:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:14,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:37:14,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:14,264 INFO L225 Difference]: With dead ends: 294 [2020-04-17 22:37:14,265 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 22:37:14,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 22:37:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 22:37:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 22:37:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 22:37:14,368 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 22:37:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:14,369 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 22:37:14,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 22:37:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:37:14,371 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:14,371 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:14,371 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:14,372 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-17 22:37:14,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:14,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702204718] [2020-04-17 22:37:14,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:14,454 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 22:37:14,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702204718] [2020-04-17 22:37:14,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:14,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:14,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601626572] [2020-04-17 22:37:14,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:14,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,467 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 22:37:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:14,483 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:37:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:14,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:37:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:14,486 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:37:14,486 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:37:14,487 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:37:14,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:37:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:37:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:37:14,508 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:37:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:14,510 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:37:14,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:37:14,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:37:14,512 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:14,513 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:14,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-17 22:37:14,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:14,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420427784] [2020-04-17 22:37:14,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:14,585 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 22:37:14,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420427784] [2020-04-17 22:37:14,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:14,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:14,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049708280] [2020-04-17 22:37:14,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:14,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:14,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,588 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:37:14,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:14,610 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-17 22:37:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:14,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:37:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:14,613 INFO L225 Difference]: With dead ends: 266 [2020-04-17 22:37:14,613 INFO L226 Difference]: Without dead ends: 140 [2020-04-17 22:37:14,613 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-17 22:37:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-17 22:37:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-17 22:37:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-17 22:37:14,622 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-17 22:37:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:14,623 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-17 22:37:14,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-17 22:37:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:37:14,624 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:14,624 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:14,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:14,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-17 22:37:14,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:14,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780078553] [2020-04-17 22:37:14,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:14,733 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 22:37:14,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780078553] [2020-04-17 22:37:14,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:14,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:14,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655267051] [2020-04-17 22:37:14,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:14,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:14,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:14,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:14,735 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-17 22:37:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:14,780 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-17 22:37:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:37:14,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:37:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:14,783 INFO L225 Difference]: With dead ends: 165 [2020-04-17 22:37:14,784 INFO L226 Difference]: Without dead ends: 113 [2020-04-17 22:37:14,784 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 22:37:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-17 22:37:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-17 22:37:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-17 22:37:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-17 22:37:14,802 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-17 22:37:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:14,802 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-17 22:37:14,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-17 22:37:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:37:14,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:14,804 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:14,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-17 22:37:14,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:14,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637608875] [2020-04-17 22:37:14,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:14,921 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 22:37:14,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637608875] [2020-04-17 22:37:14,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:14,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:14,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483431264] [2020-04-17 22:37:14,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:37:14,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:14,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:37:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:14,923 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-17 22:37:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:14,970 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-17 22:37:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:37:14,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:37:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:14,972 INFO L225 Difference]: With dead ends: 111 [2020-04-17 22:37:14,972 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 22:37:14,973 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 22:37:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 22:37:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 22:37:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-17 22:37:14,977 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-17 22:37:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:14,978 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-17 22:37:14,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:37:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-17 22:37:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:37:14,979 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:14,979 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:14,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-17 22:37:14,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:14,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142756021] [2020-04-17 22:37:14,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:15,065 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 22:37:15,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142756021] [2020-04-17 22:37:15,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:15,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:37:15,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693092132] [2020-04-17 22:37:15,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:37:15,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:37:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:15,067 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-17 22:37:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:15,127 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-17 22:37:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:37:15,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:37:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:15,128 INFO L225 Difference]: With dead ends: 75 [2020-04-17 22:37:15,128 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 22:37:15,129 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:37:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 22:37:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-17 22:37:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-17 22:37:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-17 22:37:15,132 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-17 22:37:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:15,133 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-17 22:37:15,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:37:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-17 22:37:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:15,134 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:15,134 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:15,134 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-17 22:37:15,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:15,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613417305] [2020-04-17 22:37:15,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:15,217 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 22:37:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613417305] [2020-04-17 22:37:15,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:15,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:15,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842175280] [2020-04-17 22:37:15,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:15,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:15,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:15,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:15,220 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-17 22:37:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:15,245 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-17 22:37:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:15,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:15,247 INFO L225 Difference]: With dead ends: 85 [2020-04-17 22:37:15,247 INFO L226 Difference]: Without dead ends: 48 [2020-04-17 22:37:15,248 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-17 22:37:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-17 22:37:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-17 22:37:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-17 22:37:15,253 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-17 22:37:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:15,253 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-17 22:37:15,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-17 22:37:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:15,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:15,254 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:15,255 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-17 22:37:15,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:15,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34124302] [2020-04-17 22:37:15,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:15,335 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 22:37:15,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34124302] [2020-04-17 22:37:15,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:15,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:15,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142932710] [2020-04-17 22:37:15,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:15,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:15,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:15,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:15,340 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-17 22:37:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:15,359 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-04-17 22:37:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:15,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:15,360 INFO L225 Difference]: With dead ends: 47 [2020-04-17 22:37:15,360 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:37:15,361 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 22:37:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:37:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:37:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:37:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:37:15,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:37:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:15,362 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:37:15,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:37:15,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:37:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:37:15 BasicIcfg [2020-04-17 22:37:15,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:37:15,376 INFO L168 Benchmark]: Toolchain (without parser) took 5051.74 ms. Allocated memory was 140.0 MB in the beginning and 249.6 MB in the end (delta: 109.6 MB). Free memory was 100.2 MB in the beginning and 170.4 MB in the end (delta: -70.2 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,379 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.75 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 159.9 MB in the end (delta: -61.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.07 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,386 INFO L168 Benchmark]: Boogie Preprocessor took 28.37 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,388 INFO L168 Benchmark]: RCFGBuilder took 470.63 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 134.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,389 INFO L168 Benchmark]: TraceAbstraction took 3746.86 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 133.8 MB in the beginning and 170.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:15,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.75 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 159.9 MB in the end (delta: -61.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.07 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.37 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.63 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 134.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3746.86 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 133.8 MB in the beginning and 170.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 156 SDtfs, 124 SDslu, 170 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...