/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:46:36,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:46:36,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:46:36,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:46:36,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:46:36,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:46:36,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:46:36,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:46:36,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:46:36,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:46:36,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:46:36,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:46:36,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:46:36,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:46:36,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:46:36,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:46:36,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:46:36,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:46:36,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:46:36,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:46:36,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:46:36,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:46:36,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:46:36,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:46:36,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:46:36,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:46:36,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:46:36,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:46:36,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:46:36,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:46:36,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:46:36,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:46:36,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:46:36,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:46:36,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:46:36,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:46:36,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:46:36,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:46:36,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:46:36,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:46:36,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:46:36,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:46:36,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:46:36,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:46:36,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:46:36,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:46:36,199 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:46:36,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:46:36,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:46:36,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:46:36,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:46:36,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:46:36,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:46:36,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:46:36,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:46:36,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:46:36,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:46:36,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:46:36,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:46:36,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:46:36,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:46:36,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:46:36,204 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:46:36,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:46:36,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:46:36,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:46:36,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:46:36,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:46:36,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:46:36,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:46:36,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:46:36,509 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:46:36,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-09 17:46:36,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaba3ece7/2bf6452628da42ac8b6e108d69afe304/FLAG8ba5324e0 [2020-10-09 17:46:37,084 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:46:37,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-09 17:46:37,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaba3ece7/2bf6452628da42ac8b6e108d69afe304/FLAG8ba5324e0 [2020-10-09 17:46:37,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaba3ece7/2bf6452628da42ac8b6e108d69afe304 [2020-10-09 17:46:37,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:46:37,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:46:37,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:46:37,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:46:37,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:46:37,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:46:37" (1/1) ... [2020-10-09 17:46:37,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957e935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:37, skipping insertion in model container [2020-10-09 17:46:37,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:46:37" (1/1) ... [2020-10-09 17:46:37,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:46:37,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:46:37,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:46:37,807 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:46:37,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:46:38,046 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:46:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38 WrapperNode [2020-10-09 17:46:38,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:46:38,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:46:38,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:46:38,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:46:38,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:46:38,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:46:38,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:46:38,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:46:38,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... [2020-10-09 17:46:38,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:46:38,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:46:38,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:46:38,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:46:38,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:46:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:46:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:46:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:46:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:46:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:46:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:46:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:46:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:46:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:46:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:46:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:46:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:46:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:46:38,196 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:46:38,539 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:46:38,539 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:46:38,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:46:38 BoogieIcfgContainer [2020-10-09 17:46:38,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:46:38,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:46:38,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:46:38,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:46:38,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:46:37" (1/3) ... [2020-10-09 17:46:38,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1410fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:46:38, skipping insertion in model container [2020-10-09 17:46:38,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:46:38" (2/3) ... [2020-10-09 17:46:38,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1410fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:46:38, skipping insertion in model container [2020-10-09 17:46:38,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:46:38" (3/3) ... [2020-10-09 17:46:38,550 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-09 17:46:38,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:46:38,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:46:38,570 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:46:38,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,601 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,617 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,619 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:46:38,641 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:46:38,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:46:38,662 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:46:38,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:46:38,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:46:38,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:46:38,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:46:38,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:46:38,662 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:46:38,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 17:46:38,721 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-09 17:46:38,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:46:38,726 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 17:46:38,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 17:46:38,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-09 17:46:38,752 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-09 17:46:38,753 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:46:38,753 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:38,754 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:38,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:38,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:38,761 INFO L82 PathProgramCache]: Analyzing trace with hash 642340523, now seen corresponding path program 1 times [2020-10-09 17:46:38,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:38,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586868204] [2020-10-09 17:46:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:38,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:46:38,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:38,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:39,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:39,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586868204] [2020-10-09 17:46:39,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:39,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:46:39,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112950124] [2020-10-09 17:46:39,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:46:39,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:39,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:46:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:46:39,317 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-09 17:46:39,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand 8 states. [2020-10-09 17:46:39,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:39,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-09 17:46:39,337 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:39,449 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2020-10-09 17:46:39,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:46:39,450 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 79 events. 3/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2020-10-09 17:46:39,451 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 6 selfloop transitions, 2 changer transitions 11/66 dead transitions. [2020-10-09 17:46:39,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 177 flow [2020-10-09 17:46:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:46:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:46:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2020-10-09 17:46:39,470 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8935837245696401 [2020-10-09 17:46:39,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2020-10-09 17:46:39,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2020-10-09 17:46:39,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:39,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2020-10-09 17:46:39,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:46:39,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:46:39,492 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:46:39,495 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 9 states and 571 transitions. [2020-10-09 17:46:39,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 177 flow [2020-10-09 17:46:39,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:46:39,504 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 136 flow [2020-10-09 17:46:39,507 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-09 17:46:39,508 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-09 17:46:39,508 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 136 flow [2020-10-09 17:46:39,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:46:39,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:39,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:39,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:46:39,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1160241260, now seen corresponding path program 1 times [2020-10-09 17:46:39,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285308085] [2020-10-09 17:46:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:39,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:46:39,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:39,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:39,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:39,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285308085] [2020-10-09 17:46:39,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:39,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:46:39,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628418022] [2020-10-09 17:46:39,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:46:39,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:46:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:46:40,035 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 71 [2020-10-09 17:46:40,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 136 flow. Second operand 8 states. [2020-10-09 17:46:40,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:40,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 71 [2020-10-09 17:46:40,036 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:40,122 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2020-10-09 17:46:40,122 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 17:46:40,123 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 78 events. 3/78 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 117. Up to 7 conditions per place. [2020-10-09 17:46:40,124 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 6 selfloop transitions, 2 changer transitions 10/65 dead transitions. [2020-10-09 17:46:40,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 210 flow [2020-10-09 17:46:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:46:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:46:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 569 transitions. [2020-10-09 17:46:40,127 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904538341158059 [2020-10-09 17:46:40,127 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 569 transitions. [2020-10-09 17:46:40,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 569 transitions. [2020-10-09 17:46:40,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:40,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 569 transitions. [2020-10-09 17:46:40,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:46:40,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:46:40,132 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:46:40,132 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 136 flow. Second operand 9 states and 569 transitions. [2020-10-09 17:46:40,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 210 flow [2020-10-09 17:46:40,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 178 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:46:40,136 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 140 flow [2020-10-09 17:46:40,137 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-09 17:46:40,137 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-09 17:46:40,138 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 140 flow [2020-10-09 17:46:40,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:46:40,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:40,138 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:40,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:46:40,352 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:40,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1372231315, now seen corresponding path program 1 times [2020-10-09 17:46:40,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:40,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079114849] [2020-10-09 17:46:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:46:40,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:40,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:40,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:40,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079114849] [2020-10-09 17:46:40,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:40,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:46:40,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646733438] [2020-10-09 17:46:40,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:46:40,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:40,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:46:40,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:46:40,789 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 17:46:40,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 140 flow. Second operand 9 states. [2020-10-09 17:46:40,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:40,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 17:46:40,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:40,908 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2020-10-09 17:46:40,908 INFO L130 PetriNetUnfolder]: For 20/27 co-relation queries the response was YES. [2020-10-09 17:46:40,909 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 76 events. 4/76 cut-off events. For 20/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-09 17:46:40,910 INFO L132 encePairwiseOnDemand]: 63/71 looper letters, 6 selfloop transitions, 4 changer transitions 12/67 dead transitions. [2020-10-09 17:46:40,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 233 flow [2020-10-09 17:46:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:46:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:46:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 614 transitions. [2020-10-09 17:46:40,913 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8647887323943662 [2020-10-09 17:46:40,913 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 614 transitions. [2020-10-09 17:46:40,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 614 transitions. [2020-10-09 17:46:40,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:40,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 614 transitions. [2020-10-09 17:46:40,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:46:40,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:46:40,917 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:46:40,917 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 140 flow. Second operand 10 states and 614 transitions. [2020-10-09 17:46:40,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 233 flow [2020-10-09 17:46:40,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 201 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:46:40,921 INFO L241 Difference]: Finished difference. Result has 81 places, 55 transitions, 154 flow [2020-10-09 17:46:40,921 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2020-10-09 17:46:40,921 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2020-10-09 17:46:40,922 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 154 flow [2020-10-09 17:46:40,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:46:40,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:40,922 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:41,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:46:41,136 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 358744977, now seen corresponding path program 1 times [2020-10-09 17:46:41,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:41,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43202682] [2020-10-09 17:46:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:41,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:46:41,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:41,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:41,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:41,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43202682] [2020-10-09 17:46:41,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:41,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:46:41,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597492993] [2020-10-09 17:46:41,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:46:41,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:46:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:46:41,441 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 17:46:41,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 154 flow. Second operand 9 states. [2020-10-09 17:46:41,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:41,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 17:46:41,443 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:41,567 INFO L129 PetriNetUnfolder]: 4/81 cut-off events. [2020-10-09 17:46:41,568 INFO L130 PetriNetUnfolder]: For 45/57 co-relation queries the response was YES. [2020-10-09 17:46:41,568 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 81 events. 4/81 cut-off events. For 45/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 0 based on Foata normal form. 3/84 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2020-10-09 17:46:41,569 INFO L132 encePairwiseOnDemand]: 63/71 looper letters, 6 selfloop transitions, 4 changer transitions 12/67 dead transitions. [2020-10-09 17:46:41,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 255 flow [2020-10-09 17:46:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:46:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:46:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 614 transitions. [2020-10-09 17:46:41,572 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8647887323943662 [2020-10-09 17:46:41,572 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 614 transitions. [2020-10-09 17:46:41,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 614 transitions. [2020-10-09 17:46:41,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:41,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 614 transitions. [2020-10-09 17:46:41,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:46:41,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:46:41,576 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:46:41,576 INFO L185 Difference]: Start difference. First operand has 81 places, 55 transitions, 154 flow. Second operand 10 states and 614 transitions. [2020-10-09 17:46:41,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 255 flow [2020-10-09 17:46:41,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 196 flow, removed 23 selfloop flow, removed 11 redundant places. [2020-10-09 17:46:41,580 INFO L241 Difference]: Finished difference. Result has 81 places, 55 transitions, 154 flow [2020-10-09 17:46:41,580 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2020-10-09 17:46:41,581 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2020-10-09 17:46:41,581 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 154 flow [2020-10-09 17:46:41,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:46:41,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:41,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:41,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:46:41,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:41,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1738543874, now seen corresponding path program 1 times [2020-10-09 17:46:41,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:41,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357290491] [2020-10-09 17:46:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:41,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:46:41,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:41,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:41,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:41,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357290491] [2020-10-09 17:46:41,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:41,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:46:41,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142642184] [2020-10-09 17:46:41,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:46:41,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:41,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:46:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:46:42,027 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-09 17:46:42,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 154 flow. Second operand 8 states. [2020-10-09 17:46:42,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:42,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-09 17:46:42,028 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:42,254 INFO L129 PetriNetUnfolder]: 64/242 cut-off events. [2020-10-09 17:46:42,254 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2020-10-09 17:46:42,261 INFO L80 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 242 events. 64/242 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1081 event pairs, 0 based on Foata normal form. 8/242 useless extension candidates. Maximal degree in co-relation 403. Up to 36 conditions per place. [2020-10-09 17:46:42,266 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 10 selfloop transitions, 9 changer transitions 29/93 dead transitions. [2020-10-09 17:46:42,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 326 flow [2020-10-09 17:46:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:46:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:46:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 747 transitions. [2020-10-09 17:46:42,271 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8767605633802817 [2020-10-09 17:46:42,272 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 747 transitions. [2020-10-09 17:46:42,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 747 transitions. [2020-10-09 17:46:42,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:42,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 747 transitions. [2020-10-09 17:46:42,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:46:42,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:46:42,276 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:46:42,276 INFO L185 Difference]: Start difference. First operand has 81 places, 55 transitions, 154 flow. Second operand 12 states and 747 transitions. [2020-10-09 17:46:42,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 326 flow [2020-10-09 17:46:42,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 300 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-09 17:46:42,284 INFO L241 Difference]: Finished difference. Result has 85 places, 61 transitions, 226 flow [2020-10-09 17:46:42,284 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=226, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2020-10-09 17:46:42,284 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2020-10-09 17:46:42,285 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 226 flow [2020-10-09 17:46:42,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:46:42,285 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:42,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:42,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:46:42,495 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:42,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2082889284, now seen corresponding path program 1 times [2020-10-09 17:46:42,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:42,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367395323] [2020-10-09 17:46:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:42,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:46:42,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:42,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:42,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:42,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367395323] [2020-10-09 17:46:42,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:42,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:46:42,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309879891] [2020-10-09 17:46:42,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:46:42,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:42,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:46:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:46:42,722 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-09 17:46:42,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 226 flow. Second operand 10 states. [2020-10-09 17:46:42,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:42,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-09 17:46:42,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:42,891 INFO L129 PetriNetUnfolder]: 16/101 cut-off events. [2020-10-09 17:46:42,891 INFO L130 PetriNetUnfolder]: For 308/334 co-relation queries the response was YES. [2020-10-09 17:46:42,892 INFO L80 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 101 events. 16/101 cut-off events. For 308/334 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 220 event pairs, 0 based on Foata normal form. 14/114 useless extension candidates. Maximal degree in co-relation 298. Up to 27 conditions per place. [2020-10-09 17:46:42,893 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 4 selfloop transitions, 12 changer transitions 13/74 dead transitions. [2020-10-09 17:46:42,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 74 transitions, 409 flow [2020-10-09 17:46:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:46:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:46:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2020-10-09 17:46:42,896 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8565941101152369 [2020-10-09 17:46:42,896 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2020-10-09 17:46:42,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2020-10-09 17:46:42,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:42,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2020-10-09 17:46:42,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:46:42,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:46:42,900 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:46:42,900 INFO L185 Difference]: Start difference. First operand has 85 places, 61 transitions, 226 flow. Second operand 11 states and 669 transitions. [2020-10-09 17:46:42,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 74 transitions, 409 flow [2020-10-09 17:46:42,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 319 flow, removed 39 selfloop flow, removed 8 redundant places. [2020-10-09 17:46:42,906 INFO L241 Difference]: Finished difference. Result has 87 places, 61 transitions, 232 flow [2020-10-09 17:46:42,907 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=232, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2020-10-09 17:46:42,907 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2020-10-09 17:46:42,907 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 232 flow [2020-10-09 17:46:42,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:46:42,911 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:46:42,911 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:46:43,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:46:43,135 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:46:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:46:43,135 INFO L82 PathProgramCache]: Analyzing trace with hash 999353027, now seen corresponding path program 1 times [2020-10-09 17:46:43,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:46:43,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933323670] [2020-10-09 17:46:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:46:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:46:43,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:46:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:46:43,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:46:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:43,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:46:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:46:43,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933323670] [2020-10-09 17:46:43,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:46:43,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:46:43,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634709656] [2020-10-09 17:46:43,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:46:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:46:43,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:46:43,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:46:43,559 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 17:46:43,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 232 flow. Second operand 9 states. [2020-10-09 17:46:43,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:46:43,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 17:46:43,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:46:43,616 INFO L129 PetriNetUnfolder]: 5/70 cut-off events. [2020-10-09 17:46:43,617 INFO L130 PetriNetUnfolder]: For 60/66 co-relation queries the response was YES. [2020-10-09 17:46:43,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 70 events. 5/70 cut-off events. For 60/66 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 134. Up to 11 conditions per place. [2020-10-09 17:46:43,618 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-09 17:46:43,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 246 flow [2020-10-09 17:46:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:46:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:46:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 423 transitions. [2020-10-09 17:46:43,619 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8511066398390342 [2020-10-09 17:46:43,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 423 transitions. [2020-10-09 17:46:43,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 423 transitions. [2020-10-09 17:46:43,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:46:43,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 423 transitions. [2020-10-09 17:46:43,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:46:43,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:46:43,622 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:46:43,623 INFO L185 Difference]: Start difference. First operand has 87 places, 61 transitions, 232 flow. Second operand 7 states and 423 transitions. [2020-10-09 17:46:43,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 246 flow [2020-10-09 17:46:43,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 170 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-09 17:46:43,625 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-09 17:46:43,625 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-09 17:46:43,625 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2020-10-09 17:46:43,625 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-09 17:46:43,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:46:43,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:46:43,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:46:43 BasicIcfg [2020-10-09 17:46:43,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:46:43,845 INFO L168 Benchmark]: Toolchain (without parser) took 6426.09 ms. Allocated memory was 254.8 MB in the beginning and 423.1 MB in the end (delta: 168.3 MB). Free memory was 209.7 MB in the beginning and 218.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 159.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,846 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:46:43,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.52 ms. Allocated memory was 254.8 MB in the beginning and 325.1 MB in the end (delta: 70.3 MB). Free memory was 209.7 MB in the beginning and 278.1 MB in the end (delta: -68.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 325.1 MB. Free memory was 278.1 MB in the beginning and 275.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,848 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 ms. Allocated memory is still 325.1 MB. Free memory was 275.6 MB in the beginning and 272.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,849 INFO L168 Benchmark]: RCFGBuilder took 416.00 ms. Allocated memory is still 325.1 MB. Free memory was 272.5 MB in the beginning and 250.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,850 INFO L168 Benchmark]: TraceAbstraction took 5300.19 ms. Allocated memory was 325.1 MB in the beginning and 423.1 MB in the end (delta: 98.0 MB). Free memory was 250.6 MB in the beginning and 218.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 130.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:46:43,855 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 627.52 ms. Allocated memory was 254.8 MB in the beginning and 325.1 MB in the end (delta: 70.3 MB). Free memory was 209.7 MB in the beginning and 278.1 MB in the end (delta: -68.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.78 ms. Allocated memory is still 325.1 MB. Free memory was 278.1 MB in the beginning and 275.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.23 ms. Allocated memory is still 325.1 MB. Free memory was 275.6 MB in the beginning and 272.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. * RCFGBuilder took 416.00 ms. Allocated memory is still 325.1 MB. Free memory was 272.5 MB in the beginning and 250.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5300.19 ms. Allocated memory was 325.1 MB in the beginning and 423.1 MB in the end (delta: 98.0 MB). Free memory was 250.6 MB in the beginning and 218.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 130.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 297 SDslu, 441 SDs, 0 SdLazy, 439 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 629 GetRequests, 524 SyntacticMatches, 15 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 586 ConstructedInterpolants, 0 QuantifiedInterpolants, 65989 SizeOfPredicates, 49 NumberOfNonLiveVariables, 768 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...