/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:32:50,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:32:50,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:32:50,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:32:50,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:32:50,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:32:50,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:32:50,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:32:50,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:32:50,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:32:50,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:32:50,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:32:50,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:32:50,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:32:50,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:32:50,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:32:50,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:32:50,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:32:50,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:32:50,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:32:50,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:32:50,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:32:50,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:32:50,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:32:50,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:32:50,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:32:50,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:32:50,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:32:50,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:32:50,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:32:50,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:32:50,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:32:50,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:32:50,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:32:50,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:32:50,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:32:50,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:32:50,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:32:50,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:32:50,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:32:50,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:32:50,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:32:50,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:32:50,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:32:50,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:32:50,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:32:50,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:32:50,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:32:50,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:32:50,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:32:50,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:32:50,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:32:50,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:32:50,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:32:50,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:32:50,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:32:50,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:32:50,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:32:50,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:32:50,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:32:50,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:32:50,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:32:50,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:32:50,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:32:50,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:32:50,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:32:50,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:32:50,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:32:50,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:32:50,752 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:32:50,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:32:50,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:32:51,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:32:51,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:32:51,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:32:51,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:32:51,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:32:51,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-11 18:32:51,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae137864b/5da21575cfa540d0bd1c0b3324e70131/FLAGff3336af7 [2020-10-11 18:32:51,697 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:32:51,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-11 18:32:51,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae137864b/5da21575cfa540d0bd1c0b3324e70131/FLAGff3336af7 [2020-10-11 18:32:52,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae137864b/5da21575cfa540d0bd1c0b3324e70131 [2020-10-11 18:32:52,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:32:52,029 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:32:52,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:32:52,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:32:52,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:32:52,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52, skipping insertion in model container [2020-10-11 18:32:52,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:32:52,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:32:52,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:32:52,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:32:52,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:32:52,719 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:32:52,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52 WrapperNode [2020-10-11 18:32:52,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:32:52,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:32:52,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:32:52,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:32:52,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:32:52,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:32:52,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:32:52,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:32:52,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (1/1) ... [2020-10-11 18:32:52,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:32:52,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:32:52,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:32:52,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:32:52,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (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 [2020-10-11 18:32:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:32:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:32:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:32:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:32:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:32:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:32:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:32:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:32:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:32:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:32:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:32:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:32:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:32:52,876 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:32:53,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:32:53,228 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:32:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:32:53 BoogieIcfgContainer [2020-10-11 18:32:53,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:32:53,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:32:53,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:32:53,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:32:53,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:32:52" (1/3) ... [2020-10-11 18:32:53,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8420cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:32:53, skipping insertion in model container [2020-10-11 18:32:53,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:32:52" (2/3) ... [2020-10-11 18:32:53,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8420cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:32:53, skipping insertion in model container [2020-10-11 18:32:53,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:32:53" (3/3) ... [2020-10-11 18:32:53,240 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-10-11 18:32:53,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:32:53,258 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:32:53,259 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:32:53,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,297 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,298 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:32:53,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:32:53,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:32:53,350 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:32:53,350 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:32:53,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:32:53,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:32:53,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:32:53,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:32:53,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:32:53,365 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:32:53,408 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:32:53,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:32:53,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:32:53,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:32:53,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:32:53,443 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:32:53,443 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:32:53,443 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:53,446 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:53,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-11 18:32:53,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:53,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695648360] [2020-10-11 18:32:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:53,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695648360] [2020-10-11 18:32:53,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:53,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:32:53,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446322412] [2020-10-11 18:32:53,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:32:53,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:54,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:32:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:32:54,262 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:32:54,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:32:54,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:54,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:32:54,267 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:54,431 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:32:54,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:32:54,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2020-10-11 18:32:54,434 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-11 18:32:54,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-11 18:32:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:32:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:32:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-11 18:32:54,453 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-11 18:32:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-11 18:32:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-11 18:32:54,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:54,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-11 18:32:54,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:32:54,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:32:54,483 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:32:54,486 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-11 18:32:54,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-11 18:32:54,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:32:54,500 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:32:54,503 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:32:54,503 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:32:54,504 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:32:54,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:32:54,504 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:54,504 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:54,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:32:54,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:54,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:54,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1782370427, now seen corresponding path program 1 times [2020-10-11 18:32:54,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:54,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67696128] [2020-10-11 18:32:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:54,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67696128] [2020-10-11 18:32:54,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:54,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:54,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969197693] [2020-10-11 18:32:54,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:54,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:54,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:54,956 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:32:54,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 7 states. [2020-10-11 18:32:54,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:54,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:32:54,957 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:55,152 INFO L129 PetriNetUnfolder]: 30/144 cut-off events. [2020-10-11 18:32:55,152 INFO L130 PetriNetUnfolder]: For 29/51 co-relation queries the response was YES. [2020-10-11 18:32:55,154 INFO L80 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 144 events. 30/144 cut-off events. For 29/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 499 event pairs, 0 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 255. Up to 31 conditions per place. [2020-10-11 18:32:55,155 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 5 changer transitions 21/79 dead transitions. [2020-10-11 18:32:55,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 276 flow [2020-10-11 18:32:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:32:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:32:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 608 transitions. [2020-10-11 18:32:55,160 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8685714285714285 [2020-10-11 18:32:55,160 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 608 transitions. [2020-10-11 18:32:55,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 608 transitions. [2020-10-11 18:32:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:55,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 608 transitions. [2020-10-11 18:32:55,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:32:55,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:32:55,165 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:32:55,166 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 10 states and 608 transitions. [2020-10-11 18:32:55,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 276 flow [2020-10-11 18:32:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 244 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:32:55,172 INFO L241 Difference]: Finished difference. Result has 79 places, 56 transitions, 172 flow [2020-10-11 18:32:55,173 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2020-10-11 18:32:55,174 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:32:55,174 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 172 flow [2020-10-11 18:32:55,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:55,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:55,175 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:55,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:32:55,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash -331763058, now seen corresponding path program 1 times [2020-10-11 18:32:55,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:55,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050320050] [2020-10-11 18:32:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:55,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050320050] [2020-10-11 18:32:55,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:55,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:55,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782634133] [2020-10-11 18:32:55,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:55,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:55,593 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:32:55,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 172 flow. Second operand 7 states. [2020-10-11 18:32:55,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:55,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:32:55,594 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:55,752 INFO L129 PetriNetUnfolder]: 9/139 cut-off events. [2020-10-11 18:32:55,752 INFO L130 PetriNetUnfolder]: For 166/214 co-relation queries the response was YES. [2020-10-11 18:32:55,753 INFO L80 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 9/139 cut-off events. For 166/214 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 495 event pairs, 0 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 289. Up to 22 conditions per place. [2020-10-11 18:32:55,754 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 15 selfloop transitions, 3 changer transitions 13/74 dead transitions. [2020-10-11 18:32:55,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 351 flow [2020-10-11 18:32:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:32:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:32:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 659 transitions. [2020-10-11 18:32:55,761 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8558441558441559 [2020-10-11 18:32:55,762 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 659 transitions. [2020-10-11 18:32:55,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 659 transitions. [2020-10-11 18:32:55,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:55,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 659 transitions. [2020-10-11 18:32:55,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:32:55,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:32:55,770 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:32:55,770 INFO L185 Difference]: Start difference. First operand has 79 places, 56 transitions, 172 flow. Second operand 11 states and 659 transitions. [2020-10-11 18:32:55,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 351 flow [2020-10-11 18:32:55,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 318 flow, removed 15 selfloop flow, removed 4 redundant places. [2020-10-11 18:32:55,779 INFO L241 Difference]: Finished difference. Result has 88 places, 56 transitions, 189 flow [2020-10-11 18:32:55,779 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=189, PETRI_PLACES=88, PETRI_TRANSITIONS=56} [2020-10-11 18:32:55,780 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-11 18:32:55,780 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 189 flow [2020-10-11 18:32:55,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:55,780 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:55,781 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:55,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:32:55,782 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1515353092, now seen corresponding path program 1 times [2020-10-11 18:32:55,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:55,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292476375] [2020-10-11 18:32:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:55,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292476375] [2020-10-11 18:32:55,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:55,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:32:55,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483036867] [2020-10-11 18:32:55,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:32:55,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:32:55,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:32:56,103 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:32:56,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 56 transitions, 189 flow. Second operand 6 states. [2020-10-11 18:32:56,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:56,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:32:56,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:56,226 INFO L129 PetriNetUnfolder]: 3/100 cut-off events. [2020-10-11 18:32:56,227 INFO L130 PetriNetUnfolder]: For 215/242 co-relation queries the response was YES. [2020-10-11 18:32:56,229 INFO L80 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 100 events. 3/100 cut-off events. For 215/242 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 218. Up to 13 conditions per place. [2020-10-11 18:32:56,229 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 12/66 dead transitions. [2020-10-11 18:32:56,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 318 flow [2020-10-11 18:32:56,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:32:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:32:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:32:56,232 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2020-10-11 18:32:56,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:32:56,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:32:56,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:56,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:32:56,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:32:56,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:32:56,236 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:32:56,237 INFO L185 Difference]: Start difference. First operand has 88 places, 56 transitions, 189 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:32:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 318 flow [2020-10-11 18:32:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 264 flow, removed 24 selfloop flow, removed 9 redundant places. [2020-10-11 18:32:56,241 INFO L241 Difference]: Finished difference. Result has 86 places, 54 transitions, 170 flow [2020-10-11 18:32:56,241 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2020-10-11 18:32:56,242 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-11 18:32:56,242 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 170 flow [2020-10-11 18:32:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:32:56,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:56,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:56,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:32:56,243 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1243708359, now seen corresponding path program 1 times [2020-10-11 18:32:56,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:56,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172916056] [2020-10-11 18:32:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172916056] [2020-10-11 18:32:56,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:56,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:56,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494869938] [2020-10-11 18:32:56,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:56,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:56,533 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:32:56,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 170 flow. Second operand 7 states. [2020-10-11 18:32:56,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:56,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:32:56,534 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:56,658 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2020-10-11 18:32:56,659 INFO L130 PetriNetUnfolder]: For 83/95 co-relation queries the response was YES. [2020-10-11 18:32:56,659 INFO L80 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 72 events. 0/72 cut-off events. For 83/95 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 120 event pairs, 0 based on Foata normal form. 3/75 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2020-10-11 18:32:56,659 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 5/59 dead transitions. [2020-10-11 18:32:56,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 59 transitions, 233 flow [2020-10-11 18:32:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:32:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:32:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:32:56,663 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:32:56,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:32:56,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:32:56,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:56,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:32:56,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:32:56,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:32:56,667 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:32:56,667 INFO L185 Difference]: Start difference. First operand has 86 places, 54 transitions, 170 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:32:56,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 59 transitions, 233 flow [2020-10-11 18:32:56,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 193 flow, removed 18 selfloop flow, removed 11 redundant places. [2020-10-11 18:32:56,674 INFO L241 Difference]: Finished difference. Result has 80 places, 54 transitions, 155 flow [2020-10-11 18:32:56,675 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=155, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2020-10-11 18:32:56,675 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:32:56,675 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 155 flow [2020-10-11 18:32:56,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:56,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:56,676 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:56,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:32:56,676 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:56,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2138962181, now seen corresponding path program 2 times [2020-10-11 18:32:56,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:56,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607005556] [2020-10-11 18:32:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:56,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607005556] [2020-10-11 18:32:56,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:56,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:56,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155960294] [2020-10-11 18:32:56,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:56,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:56,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:56,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:57,045 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:32:57,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 155 flow. Second operand 7 states. [2020-10-11 18:32:57,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:57,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:32:57,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:57,210 INFO L129 PetriNetUnfolder]: 4/70 cut-off events. [2020-10-11 18:32:57,210 INFO L130 PetriNetUnfolder]: For 71/78 co-relation queries the response was YES. [2020-10-11 18:32:57,211 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 70 events. 4/70 cut-off events. For 71/78 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 127. Up to 7 conditions per place. [2020-10-11 18:32:57,211 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-11 18:32:57,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 59 transitions, 209 flow [2020-10-11 18:32:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:32:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:32:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 598 transitions. [2020-10-11 18:32:57,216 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8542857142857143 [2020-10-11 18:32:57,216 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 598 transitions. [2020-10-11 18:32:57,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 598 transitions. [2020-10-11 18:32:57,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:57,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 598 transitions. [2020-10-11 18:32:57,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:32:57,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:32:57,222 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:32:57,222 INFO L185 Difference]: Start difference. First operand has 80 places, 54 transitions, 155 flow. Second operand 10 states and 598 transitions. [2020-10-11 18:32:57,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 59 transitions, 209 flow [2020-10-11 18:32:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 190 flow, removed 8 selfloop flow, removed 5 redundant places. [2020-10-11 18:32:57,226 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2020-10-11 18:32:57,226 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2020-10-11 18:32:57,227 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:32:57,227 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2020-10-11 18:32:57,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:57,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:32:57,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:32:57 BasicIcfg [2020-10-11 18:32:57,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:32:57,237 INFO L168 Benchmark]: Toolchain (without parser) took 5206.65 ms. Allocated memory was 257.9 MB in the beginning and 425.2 MB in the end (delta: 167.2 MB). Free memory was 213.3 MB in the beginning and 315.4 MB in the end (delta: -102.1 MB). Peak memory consumption was 65.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,239 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 257.9 MB. Free memory is still 234.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:32:57,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.42 ms. Allocated memory was 257.9 MB in the beginning and 329.8 MB in the end (delta: 71.8 MB). Free memory was 213.3 MB in the beginning and 280.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.27 ms. Allocated memory is still 329.8 MB. Free memory was 280.7 MB in the beginning and 278.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,252 INFO L168 Benchmark]: Boogie Preprocessor took 28.44 ms. Allocated memory is still 329.8 MB. Free memory was 278.2 MB in the beginning and 275.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,253 INFO L168 Benchmark]: RCFGBuilder took 427.53 ms. Allocated memory is still 329.8 MB. Free memory was 275.6 MB in the beginning and 253.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,254 INFO L168 Benchmark]: TraceAbstraction took 4001.20 ms. Allocated memory was 329.8 MB in the beginning and 425.2 MB in the end (delta: 95.4 MB). Free memory was 253.8 MB in the beginning and 315.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:57,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 257.9 MB. Free memory is still 234.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 689.42 ms. Allocated memory was 257.9 MB in the beginning and 329.8 MB in the end (delta: 71.8 MB). Free memory was 213.3 MB in the beginning and 280.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 54.27 ms. Allocated memory is still 329.8 MB. Free memory was 280.7 MB in the beginning and 278.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.44 ms. Allocated memory is still 329.8 MB. Free memory was 278.2 MB in the beginning and 275.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 427.53 ms. Allocated memory is still 329.8 MB. Free memory was 275.6 MB in the beginning and 253.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4001.20 ms. Allocated memory was 329.8 MB in the beginning and 425.2 MB in the end (delta: 95.4 MB). Free memory was 253.8 MB in the beginning and 315.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 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: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 188 SDtfs, 199 SDslu, 560 SDs, 0 SdLazy, 441 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=3, 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, 0.7s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 26116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...