/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:40:15,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:40:15,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:40:15,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:40:15,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:40:15,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:40:15,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:40:15,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:40:15,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:40:15,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:40:15,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:40:15,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:40:15,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:40:15,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:40:15,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:40:15,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:40:15,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:40:15,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:40:15,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:40:15,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:40:15,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:40:15,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:40:15,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:40:15,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:40:15,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:40:15,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:40:15,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:40:15,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:40:15,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:40:15,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:40:15,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:40:15,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:40:15,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:40:15,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:40:15,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:40:15,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:40:15,822 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-PN-SemanticLbe.epf [2020-10-16 01:40:15,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:40:15,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:40:15,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:40:15,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:40:15,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:40:15,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:40:15,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:40:15,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:40:15,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:40:15,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:40:15,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:40:15,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:40:15,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:40:15,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:40:15,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:40:15,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:40:15,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:40:15,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:40:15,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:40:15,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:40:15,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:40:15,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:40:15,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:40:15,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:40:15,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:40:15,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:40:15,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:40:15,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:40:15,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:40:16,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:40:16,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:40:16,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:40:16,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:40:16,200 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:40:16,200 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-16 01:40:16,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52ecbab8/405d7886deb04032822b5ee4049c3d87/FLAGf0654324e [2020-10-16 01:40:16,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:40:16,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-16 01:40:16,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52ecbab8/405d7886deb04032822b5ee4049c3d87/FLAGf0654324e [2020-10-16 01:40:17,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52ecbab8/405d7886deb04032822b5ee4049c3d87 [2020-10-16 01:40:17,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:40:17,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:40:17,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:17,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:40:17,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:40:17,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17, skipping insertion in model container [2020-10-16 01:40:17,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:40:17,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:40:17,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:17,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:40:17,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:17,910 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:40:17,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17 WrapperNode [2020-10-16 01:40:17,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:17,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:17,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:40:17,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:40:17,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:17,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:40:17,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:40:17,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:40:17,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (1/1) ... [2020-10-16 01:40:17,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:40:17,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:40:17,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:40:17,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:40:17,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (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 [2020-10-16 01:40:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:40:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:40:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:40:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:40:18,058 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:40:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:40:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:40:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:40:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:40:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:40:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:40:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:40:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:40:18,062 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:40:18,442 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:40:18,443 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:40:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:18 BoogieIcfgContainer [2020-10-16 01:40:18,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:40:18,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:40:18,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:40:18,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:40:18,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:17" (1/3) ... [2020-10-16 01:40:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f57226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:18, skipping insertion in model container [2020-10-16 01:40:18,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:17" (2/3) ... [2020-10-16 01:40:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f57226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:18, skipping insertion in model container [2020-10-16 01:40:18,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:18" (3/3) ... [2020-10-16 01:40:18,454 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-10-16 01:40:18,466 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:40:18,473 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:40:18,473 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:40:18,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,506 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,513 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,513 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,517 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,518 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,518 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,520 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,520 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:18,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:40:18,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:40:18,558 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:40:18,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:40:18,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:40:18,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:40:18,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:40:18,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:40:18,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:40:18,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:40:18,614 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:40:18,615 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:18,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:40:18,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:40:18,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:18,629 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:40:18,631 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:18,634 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:18,635 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:18,653 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:40:18,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:18,654 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 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. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:40:18,656 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:40:20,001 INFO L132 LiptonReduction]: Checked pairs total: 1770 [2020-10-16 01:40:20,001 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:40:20,004 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1377 [2020-10-16 01:40:20,013 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:40:20,014 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:20,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,016 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,016 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,023 INFO L82 PathProgramCache]: Analyzing trace with hash -142927657, now seen corresponding path program 1 times [2020-10-16 01:40:20,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269900583] [2020-10-16 01:40:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269900583] [2020-10-16 01:40:20,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:20,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668859647] [2020-10-16 01:40:20,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:20,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:20,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:20,282 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:40:20,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:40:20,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:40:20,286 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,313 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:40:20,313 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:20,314 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 01:40:20,315 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:40:20,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 01:40:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 01:40:20,332 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2020-10-16 01:40:20,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 01:40:20,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 01:40:20,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 01:40:20,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:20,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:20,349 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:20,352 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2020-10-16 01:40:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 01:40:20,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:40:20,358 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 01:40:20,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:40:20,362 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:40:20,362 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 01:40:20,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:20,362 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,362 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:40:20,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash -135790335, now seen corresponding path program 1 times [2020-10-16 01:40:20,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594615454] [2020-10-16 01:40:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594615454] [2020-10-16 01:40:20,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636812729] [2020-10-16 01:40:20,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:20,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:20,431 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:40:20,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:40:20,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:40:20,432 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,472 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2020-10-16 01:40:20,472 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 01:40:20,473 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 85 events. 29/85 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 329 event pairs, 16 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 164. Up to 44 conditions per place. [2020-10-16 01:40:20,474 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 01:40:20,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2020-10-16 01:40:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:40:20,478 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 01:40:20,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:20,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:20,482 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:20,482 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:40:20,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2020-10-16 01:40:20,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:20,484 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 01:40:20,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 01:40:20,485 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:40:20,485 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 01:40:20,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:20,486 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,486 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:40:20,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -201967492, now seen corresponding path program 1 times [2020-10-16 01:40:20,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310137021] [2020-10-16 01:40:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310137021] [2020-10-16 01:40:20,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:20,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888827343] [2020-10-16 01:40:20,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:20,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:20,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:20,537 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:40:20,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 01:40:20,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:40:20,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,565 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-16 01:40:20,565 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2020-10-16 01:40:20,566 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 56 events. 17/56 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 183 event pairs, 11 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 118. Up to 25 conditions per place. [2020-10-16 01:40:20,567 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 01:40:20,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 84 flow [2020-10-16 01:40:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:40:20,570 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 01:40:20,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:40:20,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:20,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:20,574 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:20,574 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:40:20,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 84 flow [2020-10-16 01:40:20,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:20,603 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2020-10-16 01:40:20,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:40:20,604 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:40:20,604 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2020-10-16 01:40:20,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:20,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,604 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:40:20,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1971283482, now seen corresponding path program 1 times [2020-10-16 01:40:20,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982456885] [2020-10-16 01:40:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982456885] [2020-10-16 01:40:20,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:20,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463263506] [2020-10-16 01:40:20,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:20,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:20,673 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:40:20,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states. [2020-10-16 01:40:20,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:40:20,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,691 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:40:20,692 INFO L130 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2020-10-16 01:40:20,692 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 3/24 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2020-10-16 01:40:20,693 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:40:20,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 74 flow [2020-10-16 01:40:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:40:20,696 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 01:40:20,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:40:20,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:40:20,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:40:20,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:20,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:20,702 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:20,702 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:40:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 74 flow [2020-10-16 01:40:20,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:20,704 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 72 flow [2020-10-16 01:40:20,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 01:40:20,705 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:40:20,705 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 72 flow [2020-10-16 01:40:20,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:20,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,706 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:40:20,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,707 INFO L82 PathProgramCache]: Analyzing trace with hash 980225973, now seen corresponding path program 1 times [2020-10-16 01:40:20,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 01:40:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 01:40:20,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:20,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119726635] [2020-10-16 01:40:20,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:20,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:20,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:20,831 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:20,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 72 flow. Second operand 4 states. [2020-10-16 01:40:20,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:20,831 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,882 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:40:20,883 INFO L130 PetriNetUnfolder]: For 243/264 co-relation queries the response was YES. [2020-10-16 01:40:20,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 96 events. 42/96 cut-off events. For 243/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 240. Up to 61 conditions per place. [2020-10-16 01:40:20,885 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 01:40:20,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 124 flow [2020-10-16 01:40:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 01:40:20,887 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2020-10-16 01:40:20,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 01:40:20,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 01:40:20,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 01:40:20,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:20,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:20,890 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:20,890 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 72 flow. Second operand 5 states and 418 transitions. [2020-10-16 01:40:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 124 flow [2020-10-16 01:40:20,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:20,893 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2020-10-16 01:40:20,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2020-10-16 01:40:20,893 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:40:20,894 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2020-10-16 01:40:20,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:20,894 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,894 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:40:20,894 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2055609306, now seen corresponding path program 1 times [2020-10-16 01:40:20,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:20,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820981669] [2020-10-16 01:40:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:20,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820981669] [2020-10-16 01:40:20,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:20,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:20,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033100026] [2020-10-16 01:40:20,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:20,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:20,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:20,931 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:20,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states. [2020-10-16 01:40:20,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:20,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:20,932 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:20,985 INFO L129 PetriNetUnfolder]: 88/215 cut-off events. [2020-10-16 01:40:20,985 INFO L130 PetriNetUnfolder]: For 858/932 co-relation queries the response was YES. [2020-10-16 01:40:20,987 INFO L80 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 215 events. 88/215 cut-off events. For 858/932 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1157 event pairs, 32 based on Foata normal form. 31/226 useless extension candidates. Maximal degree in co-relation 664. Up to 136 conditions per place. [2020-10-16 01:40:20,988 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2020-10-16 01:40:20,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 152 flow [2020-10-16 01:40:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 01:40:20,990 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2020-10-16 01:40:20,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 01:40:20,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 01:40:20,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:20,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 01:40:20,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:20,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:20,993 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:20,993 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 347 transitions. [2020-10-16 01:40:20,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 152 flow [2020-10-16 01:40:20,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:20,997 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 128 flow [2020-10-16 01:40:20,998 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 01:40:20,998 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 01:40:20,998 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 128 flow [2020-10-16 01:40:20,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:20,998 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:20,999 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:20,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:40:20,999 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1154321482, now seen corresponding path program 2 times [2020-10-16 01:40:21,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:21,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888815401] [2020-10-16 01:40:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:21,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888815401] [2020-10-16 01:40:21,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:21,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:21,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943373031] [2020-10-16 01:40:21,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:40:21,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:40:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:40:21,043 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:21,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 128 flow. Second operand 5 states. [2020-10-16 01:40:21,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:21,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:21,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:21,102 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 01:40:21,102 INFO L130 PetriNetUnfolder]: For 534/609 co-relation queries the response was YES. [2020-10-16 01:40:21,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 76 events. 25/76 cut-off events. For 534/609 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 273 event pairs, 3 based on Foata normal form. 40/112 useless extension candidates. Maximal degree in co-relation 287. Up to 52 conditions per place. [2020-10-16 01:40:21,104 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 01:40:21,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 230 flow [2020-10-16 01:40:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:40:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:40:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2020-10-16 01:40:21,106 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516087516087516 [2020-10-16 01:40:21,106 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2020-10-16 01:40:21,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2020-10-16 01:40:21,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:21,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2020-10-16 01:40:21,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:40:21,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:40:21,110 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:40:21,110 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 128 flow. Second operand 7 states and 584 transitions. [2020-10-16 01:40:21,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 230 flow [2020-10-16 01:40:21,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 218 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:21,113 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 204 flow [2020-10-16 01:40:21,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2020-10-16 01:40:21,114 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:40:21,114 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 204 flow [2020-10-16 01:40:21,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:40:21,114 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:21,114 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:21,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:40:21,115 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 980865761, now seen corresponding path program 1 times [2020-10-16 01:40:21,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:21,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692719436] [2020-10-16 01:40:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:21,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692719436] [2020-10-16 01:40:21,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:21,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:21,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043925534] [2020-10-16 01:40:21,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:21,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:21,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:21,142 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:40:21,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states. [2020-10-16 01:40:21,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:21,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:40:21,143 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:21,162 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 01:40:21,162 INFO L130 PetriNetUnfolder]: For 512/579 co-relation queries the response was YES. [2020-10-16 01:40:21,163 INFO L80 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 87 events. 23/87 cut-off events. For 512/579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 372 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 360. Up to 64 conditions per place. [2020-10-16 01:40:21,163 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 01:40:21,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 216 flow [2020-10-16 01:40:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:40:21,165 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 01:40:21,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:40:21,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:40:21,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:21,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:40:21,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:21,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:21,167 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:21,167 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:40:21,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 216 flow [2020-10-16 01:40:21,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 186 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:21,171 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 145 flow [2020-10-16 01:40:21,172 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2020-10-16 01:40:21,172 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:40:21,172 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 145 flow [2020-10-16 01:40:21,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:21,172 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:21,172 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:21,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:40:21,173 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:21,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1436437043, now seen corresponding path program 1 times [2020-10-16 01:40:21,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:21,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363177703] [2020-10-16 01:40:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:21,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363177703] [2020-10-16 01:40:21,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:21,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106217077] [2020-10-16 01:40:21,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:21,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:21,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:21,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:21,207 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:21,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states. [2020-10-16 01:40:21,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:21,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:21,207 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:21,243 INFO L129 PetriNetUnfolder]: 42/126 cut-off events. [2020-10-16 01:40:21,243 INFO L130 PetriNetUnfolder]: For 576/589 co-relation queries the response was YES. [2020-10-16 01:40:21,244 INFO L80 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 126 events. 42/126 cut-off events. For 576/589 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 535 event pairs, 7 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 441. Up to 62 conditions per place. [2020-10-16 01:40:21,245 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-16 01:40:21,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 173 flow [2020-10-16 01:40:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 01:40:21,247 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2020-10-16 01:40:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 01:40:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 01:40:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:21,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 01:40:21,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:21,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:21,249 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:21,250 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states and 346 transitions. [2020-10-16 01:40:21,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 173 flow [2020-10-16 01:40:21,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 160 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:21,253 INFO L241 Difference]: Finished difference. Result has 42 places, 26 transitions, 145 flow [2020-10-16 01:40:21,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2020-10-16 01:40:21,253 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 01:40:21,253 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 145 flow [2020-10-16 01:40:21,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:21,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:21,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:21,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:40:21,254 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:21,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1641346049, now seen corresponding path program 2 times [2020-10-16 01:40:21,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:21,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996069794] [2020-10-16 01:40:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:21,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996069794] [2020-10-16 01:40:21,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:21,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:21,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698211713] [2020-10-16 01:40:21,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:21,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:21,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:21,289 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:21,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 145 flow. Second operand 4 states. [2020-10-16 01:40:21,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:21,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:21,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:21,330 INFO L129 PetriNetUnfolder]: 48/152 cut-off events. [2020-10-16 01:40:21,330 INFO L130 PetriNetUnfolder]: For 355/374 co-relation queries the response was YES. [2020-10-16 01:40:21,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 152 events. 48/152 cut-off events. For 355/374 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 496. Up to 74 conditions per place. [2020-10-16 01:40:21,332 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 5/31 dead transitions. [2020-10-16 01:40:21,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 191 flow [2020-10-16 01:40:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2020-10-16 01:40:21,334 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7783783783783784 [2020-10-16 01:40:21,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2020-10-16 01:40:21,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2020-10-16 01:40:21,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:21,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2020-10-16 01:40:21,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:21,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:21,337 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:21,337 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 145 flow. Second operand 5 states and 432 transitions. [2020-10-16 01:40:21,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 191 flow [2020-10-16 01:40:21,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:21,341 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 142 flow [2020-10-16 01:40:21,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 01:40:21,341 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 01:40:21,341 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 142 flow [2020-10-16 01:40:21,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:21,342 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:21,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:21,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:40:21,342 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:21,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1693034047, now seen corresponding path program 3 times [2020-10-16 01:40:21,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:21,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2801376] [2020-10-16 01:40:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:21,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2801376] [2020-10-16 01:40:21,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:21,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:40:21,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621956180] [2020-10-16 01:40:21,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:40:21,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:40:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:40:21,389 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:21,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 142 flow. Second operand 6 states. [2020-10-16 01:40:21,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:21,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:21,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:21,437 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 01:40:21,437 INFO L130 PetriNetUnfolder]: For 123/181 co-relation queries the response was YES. [2020-10-16 01:40:21,438 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 70 events. 15/70 cut-off events. For 123/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 0 based on Foata normal form. 29/95 useless extension candidates. Maximal degree in co-relation 257. Up to 37 conditions per place. [2020-10-16 01:40:21,438 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 01:40:21,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 170 flow [2020-10-16 01:40:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:40:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:40:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2020-10-16 01:40:21,441 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2020-10-16 01:40:21,441 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2020-10-16 01:40:21,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2020-10-16 01:40:21,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:21,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2020-10-16 01:40:21,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:40:21,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:40:21,445 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:40:21,445 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 142 flow. Second operand 7 states and 574 transitions. [2020-10-16 01:40:21,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 170 flow [2020-10-16 01:40:21,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 01:40:21,447 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 01:40:21,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 01:40:21,447 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:40:21,447 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 01:40:21,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:40:21,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 01:40:21,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:40:21 BasicIcfg [2020-10-16 01:40:21,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:40:21,454 INFO L168 Benchmark]: Toolchain (without parser) took 4346.94 ms. Allocated memory was 251.1 MB in the beginning and 371.7 MB in the end (delta: 120.6 MB). Free memory was 206.2 MB in the beginning and 187.9 MB in the end (delta: 18.3 MB). Peak memory consumption was 138.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,455 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:40:21,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.55 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.2 MB in the beginning and 264.3 MB in the end (delta: -58.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 313.5 MB. Free memory was 264.3 MB in the beginning and 261.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,458 INFO L168 Benchmark]: Boogie Preprocessor took 27.71 ms. Allocated memory is still 313.5 MB. Free memory was 261.7 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,458 INFO L168 Benchmark]: RCFGBuilder took 458.95 ms. Allocated memory is still 313.5 MB. Free memory was 259.2 MB in the beginning and 237.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,459 INFO L168 Benchmark]: TraceAbstraction took 3005.31 ms. Allocated memory was 313.5 MB in the beginning and 371.7 MB in the end (delta: 58.2 MB). Free memory was 237.4 MB in the beginning and 187.9 MB in the end (delta: 49.5 MB). Peak memory consumption was 107.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:21,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 801.55 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.2 MB in the beginning and 264.3 MB in the end (delta: -58.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 313.5 MB. Free memory was 264.3 MB in the beginning and 261.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.71 ms. Allocated memory is still 313.5 MB. Free memory was 261.7 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 458.95 ms. Allocated memory is still 313.5 MB. Free memory was 259.2 MB in the beginning and 237.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3005.31 ms. Allocated memory was 313.5 MB in the beginning and 371.7 MB in the end (delta: 58.2 MB). Free memory was 237.4 MB in the beginning and 187.9 MB in the end (delta: 49.5 MB). Peak memory consumption was 107.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 576 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1770 MoverChecksTotal - 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, 68 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: 2.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 49 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=7, 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, 0.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...