/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/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:35:10,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:35:10,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:35:10,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:35:10,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:35:10,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:35:10,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:35:10,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:35:10,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:35:10,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:35:10,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:35:10,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:35:10,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:35:10,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:35:10,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:35:10,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:35:10,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:35:10,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:35:10,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:35:10,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:35:10,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:35:10,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:35:10,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:35:10,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:35:10,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:35:10,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:35:10,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:35:10,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:35:10,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:35:10,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:35:10,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:35:10,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:35:10,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:35:10,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:35:10,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:35:10,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:35:10,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:35:10,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:35:10,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:35:10,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:35:10,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:35:10,836 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 18:35:10,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:35:10,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:35:10,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:35:10,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:35:10,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:35:10,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:35:10,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:35:10,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:35:10,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:35:10,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:35:10,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:35:10,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:35:10,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:35:10,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:35:10,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:35:10,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:35:10,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:35:10,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:35:10,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:35:10,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:35:11,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:35:11,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:35:11,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:35:11,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:35:11,210 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:35:11,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-11 18:35:11,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6eb398a/08e743c4e1d946ebaca2ea405a750c2f/FLAG8be1e02ad [2020-10-11 18:35:11,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:35:11,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-11 18:35:11,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6eb398a/08e743c4e1d946ebaca2ea405a750c2f/FLAG8be1e02ad [2020-10-11 18:35:12,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6eb398a/08e743c4e1d946ebaca2ea405a750c2f [2020-10-11 18:35:12,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:35:12,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:35:12,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:35:12,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:35:12,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:35:12,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414d9afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12, skipping insertion in model container [2020-10-11 18:35:12,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:35:12,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:35:12,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:35:12,629 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:35:12,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:35:12,740 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:35:12,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12 WrapperNode [2020-10-11 18:35:12,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:35:12,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:35:12,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:35:12,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:35:12,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:35:12,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:35:12,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:35:12,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:35:12,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (1/1) ... [2020-10-11 18:35:12,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:35:12,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:35:12,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:35:12,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:35:12,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (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 18:35:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:35:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:35:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:35:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:35:12,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:35:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:35:12,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:35:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:35:12,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:35:12,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:35:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:35:12,890 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 18:35:13,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:35:13,203 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:35:13,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:35:13 BoogieIcfgContainer [2020-10-11 18:35:13,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:35:13,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:35:13,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:35:13,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:35:13,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:35:12" (1/3) ... [2020-10-11 18:35:13,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac41aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:35:13, skipping insertion in model container [2020-10-11 18:35:13,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:12" (2/3) ... [2020-10-11 18:35:13,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac41aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:35:13, skipping insertion in model container [2020-10-11 18:35:13,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:35:13" (3/3) ... [2020-10-11 18:35:13,214 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-10-11 18:35:13,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:35:13,232 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:35:13,233 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:35:13,259 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,260 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,260 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,260 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,273 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,273 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,273 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:13,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 18:35:13,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:35:13,310 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:35:13,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:35:13,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:35:13,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:35:13,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:35:13,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:35:13,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:35:13,322 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-11 18:35:13,361 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-11 18:35:13,361 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:13,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-11 18:35:13,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-11 18:35:13,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-11 18:35:13,387 INFO L129 PetriNetUnfolder]: 1/43 cut-off events. [2020-10-11 18:35:13,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:13,387 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:13,388 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] [2020-10-11 18:35:13,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1893999798, now seen corresponding path program 1 times [2020-10-11 18:35:13,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:13,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484259887] [2020-10-11 18:35:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:13,798 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 18:35:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484259887] [2020-10-11 18:35:13,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:13,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:13,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211440855] [2020-10-11 18:35:13,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:13,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:13,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:14,003 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 55 [2020-10-11 18:35:14,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 94 flow. Second operand 6 states. [2020-10-11 18:35:14,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:14,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 55 [2020-10-11 18:35:14,007 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:14,190 INFO L129 PetriNetUnfolder]: 24/113 cut-off events. [2020-10-11 18:35:14,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:14,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 113 events. 24/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 385 event pairs, 5 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 159. Up to 31 conditions per place. [2020-10-11 18:35:14,195 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 8 selfloop transitions, 3 changer transitions 19/64 dead transitions. [2020-10-11 18:35:14,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 194 flow [2020-10-11 18:35:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 430 transitions. [2020-10-11 18:35:14,212 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8686868686868687 [2020-10-11 18:35:14,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 430 transitions. [2020-10-11 18:35:14,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 430 transitions. [2020-10-11 18:35:14,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:14,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 430 transitions. [2020-10-11 18:35:14,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:14,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:14,231 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:14,234 INFO L185 Difference]: Start difference. First operand has 50 places, 44 transitions, 94 flow. Second operand 9 states and 430 transitions. [2020-10-11 18:35:14,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 194 flow [2020-10-11 18:35:14,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:35:14,243 INFO L241 Difference]: Finished difference. Result has 63 places, 45 transitions, 133 flow [2020-10-11 18:35:14,245 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2020-10-11 18:35:14,246 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2020-10-11 18:35:14,247 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 133 flow [2020-10-11 18:35:14,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:14,247 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:14,247 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] [2020-10-11 18:35:14,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:35:14,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1544303221, now seen corresponding path program 1 times [2020-10-11 18:35:14,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:14,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621714688] [2020-10-11 18:35:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:14,405 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 18:35:14,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621714688] [2020-10-11 18:35:14,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:14,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:14,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340417592] [2020-10-11 18:35:14,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:14,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:14,571 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 55 [2020-10-11 18:35:14,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 133 flow. Second operand 6 states. [2020-10-11 18:35:14,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:14,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 55 [2020-10-11 18:35:14,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:14,688 INFO L129 PetriNetUnfolder]: 14/97 cut-off events. [2020-10-11 18:35:14,689 INFO L130 PetriNetUnfolder]: For 117/119 co-relation queries the response was YES. [2020-10-11 18:35:14,690 INFO L80 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 97 events. 14/97 cut-off events. For 117/119 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 5 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 208. Up to 21 conditions per place. [2020-10-11 18:35:14,691 INFO L132 encePairwiseOnDemand]: 49/55 looper letters, 6 selfloop transitions, 2 changer transitions 10/55 dead transitions. [2020-10-11 18:35:14,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 207 flow [2020-10-11 18:35:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 425 transitions. [2020-10-11 18:35:14,694 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2020-10-11 18:35:14,695 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 425 transitions. [2020-10-11 18:35:14,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 425 transitions. [2020-10-11 18:35:14,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:14,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 425 transitions. [2020-10-11 18:35:14,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:14,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:14,700 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:14,700 INFO L185 Difference]: Start difference. First operand has 63 places, 45 transitions, 133 flow. Second operand 9 states and 425 transitions. [2020-10-11 18:35:14,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 207 flow [2020-10-11 18:35:14,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 190 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:35:14,705 INFO L241 Difference]: Finished difference. Result has 68 places, 45 transitions, 144 flow [2020-10-11 18:35:14,705 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2020-10-11 18:35:14,706 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2020-10-11 18:35:14,706 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 144 flow [2020-10-11 18:35:14,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:14,707 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:14,707 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] [2020-10-11 18:35:14,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:35:14,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:14,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1280655401, now seen corresponding path program 1 times [2020-10-11 18:35:14,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:14,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787071151] [2020-10-11 18:35:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:14,851 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 18:35:14,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787071151] [2020-10-11 18:35:14,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:14,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:35:14,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982057365] [2020-10-11 18:35:14,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:35:14,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:14,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:35:14,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:35:15,046 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:35:15,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 144 flow. Second operand 7 states. [2020-10-11 18:35:15,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:15,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:35:15,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:15,226 INFO L129 PetriNetUnfolder]: 21/112 cut-off events. [2020-10-11 18:35:15,226 INFO L130 PetriNetUnfolder]: For 190/202 co-relation queries the response was YES. [2020-10-11 18:35:15,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 112 events. 21/112 cut-off events. For 190/202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 358 event pairs, 10 based on Foata normal form. 5/112 useless extension candidates. Maximal degree in co-relation 277. Up to 26 conditions per place. [2020-10-11 18:35:15,228 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 6 selfloop transitions, 4 changer transitions 15/57 dead transitions. [2020-10-11 18:35:15,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 247 flow [2020-10-11 18:35:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:35:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:35:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 454 transitions. [2020-10-11 18:35:15,231 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8254545454545454 [2020-10-11 18:35:15,231 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 454 transitions. [2020-10-11 18:35:15,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 454 transitions. [2020-10-11 18:35:15,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:15,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 454 transitions. [2020-10-11 18:35:15,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:35:15,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:35:15,235 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:35:15,235 INFO L185 Difference]: Start difference. First operand has 68 places, 45 transitions, 144 flow. Second operand 10 states and 454 transitions. [2020-10-11 18:35:15,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 247 flow [2020-10-11 18:35:15,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 211 flow, removed 15 selfloop flow, removed 8 redundant places. [2020-10-11 18:35:15,241 INFO L241 Difference]: Finished difference. Result has 71 places, 42 transitions, 142 flow [2020-10-11 18:35:15,241 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2020-10-11 18:35:15,241 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2020-10-11 18:35:15,241 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 142 flow [2020-10-11 18:35:15,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:35:15,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:15,242 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] [2020-10-11 18:35:15,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:35:15,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash -56210044, now seen corresponding path program 1 times [2020-10-11 18:35:15,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:15,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188102621] [2020-10-11 18:35:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:15,365 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 18:35:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188102621] [2020-10-11 18:35:15,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:15,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636190635] [2020-10-11 18:35:15,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:15,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:15,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:15,477 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:35:15,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 142 flow. Second operand 6 states. [2020-10-11 18:35:15,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:15,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:35:15,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:15,633 INFO L129 PetriNetUnfolder]: 29/130 cut-off events. [2020-10-11 18:35:15,634 INFO L130 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2020-10-11 18:35:15,637 INFO L80 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 130 events. 29/130 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 441 event pairs, 4 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 255. Up to 27 conditions per place. [2020-10-11 18:35:15,638 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 8 selfloop transitions, 5 changer transitions 15/61 dead transitions. [2020-10-11 18:35:15,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 236 flow [2020-10-11 18:35:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 417 transitions. [2020-10-11 18:35:15,641 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8424242424242424 [2020-10-11 18:35:15,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 417 transitions. [2020-10-11 18:35:15,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 417 transitions. [2020-10-11 18:35:15,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:15,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 417 transitions. [2020-10-11 18:35:15,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:15,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:15,644 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:15,645 INFO L185 Difference]: Start difference. First operand has 71 places, 42 transitions, 142 flow. Second operand 9 states and 417 transitions. [2020-10-11 18:35:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 236 flow [2020-10-11 18:35:15,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 208 flow, removed 8 selfloop flow, removed 11 redundant places. [2020-10-11 18:35:15,652 INFO L241 Difference]: Finished difference. Result has 67 places, 44 transitions, 158 flow [2020-10-11 18:35:15,652 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=67, PETRI_TRANSITIONS=44} [2020-10-11 18:35:15,652 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2020-10-11 18:35:15,652 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 44 transitions, 158 flow [2020-10-11 18:35:15,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:15,653 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:15,653 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 18:35:15,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:35:15,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1670130679, now seen corresponding path program 1 times [2020-10-11 18:35:15,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:15,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860402850] [2020-10-11 18:35:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:15,814 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 18:35:15,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860402850] [2020-10-11 18:35:15,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:15,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:35:15,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066086585] [2020-10-11 18:35:15,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:35:15,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:35:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:35:15,999 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:35:16,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 44 transitions, 158 flow. Second operand 7 states. [2020-10-11 18:35:16,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:16,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:35:16,000 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:16,159 INFO L129 PetriNetUnfolder]: 8/71 cut-off events. [2020-10-11 18:35:16,159 INFO L130 PetriNetUnfolder]: For 74/81 co-relation queries the response was YES. [2020-10-11 18:35:16,160 INFO L80 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 71 events. 8/71 cut-off events. For 74/81 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 0 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 163. Up to 17 conditions per place. [2020-10-11 18:35:16,162 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 4 selfloop transitions, 7 changer transitions 11/55 dead transitions. [2020-10-11 18:35:16,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 55 transitions, 267 flow [2020-10-11 18:35:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:35:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:35:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 454 transitions. [2020-10-11 18:35:16,164 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8254545454545454 [2020-10-11 18:35:16,164 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 454 transitions. [2020-10-11 18:35:16,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 454 transitions. [2020-10-11 18:35:16,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:16,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 454 transitions. [2020-10-11 18:35:16,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:35:16,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:35:16,168 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:35:16,168 INFO L185 Difference]: Start difference. First operand has 67 places, 44 transitions, 158 flow. Second operand 10 states and 454 transitions. [2020-10-11 18:35:16,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 55 transitions, 267 flow [2020-10-11 18:35:16,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 210 flow, removed 22 selfloop flow, removed 10 redundant places. [2020-10-11 18:35:16,173 INFO L241 Difference]: Finished difference. Result has 68 places, 44 transitions, 152 flow [2020-10-11 18:35:16,173 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2020-10-11 18:35:16,174 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2020-10-11 18:35:16,174 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 152 flow [2020-10-11 18:35:16,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:35:16,174 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:16,174 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] [2020-10-11 18:35:16,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:35:16,175 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -359783098, now seen corresponding path program 1 times [2020-10-11 18:35:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:16,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709748341] [2020-10-11 18:35:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:16,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709748341] [2020-10-11 18:35:16,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:16,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:16,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120142472] [2020-10-11 18:35:16,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:16,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:16,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:16,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:16,380 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 55 [2020-10-11 18:35:16,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 152 flow. Second operand 6 states. [2020-10-11 18:35:16,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:16,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 55 [2020-10-11 18:35:16,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:16,428 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-11 18:35:16,428 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-10-11 18:35:16,429 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 44 events. 1/44 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 74. Up to 6 conditions per place. [2020-10-11 18:35:16,429 INFO L132 encePairwiseOnDemand]: 50/55 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2020-10-11 18:35:16,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 42 transitions, 164 flow [2020-10-11 18:35:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:35:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:35:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2020-10-11 18:35:16,431 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2020-10-11 18:35:16,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 273 transitions. [2020-10-11 18:35:16,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 273 transitions. [2020-10-11 18:35:16,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:16,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 273 transitions. [2020-10-11 18:35:16,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:35:16,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:35:16,434 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:35:16,434 INFO L185 Difference]: Start difference. First operand has 68 places, 44 transitions, 152 flow. Second operand 6 states and 273 transitions. [2020-10-11 18:35:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 42 transitions, 164 flow [2020-10-11 18:35:16,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 118 flow, removed 13 selfloop flow, removed 13 redundant places. [2020-10-11 18:35:16,436 INFO L241 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2020-10-11 18:35:16,437 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2020-10-11 18:35:16,437 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2020-10-11 18:35:16,437 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2020-10-11 18:35:16,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:16,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:35:16,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:35:16 BasicIcfg [2020-10-11 18:35:16,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:35:16,446 INFO L168 Benchmark]: Toolchain (without parser) took 4318.29 ms. Allocated memory was 248.0 MB in the beginning and 368.6 MB in the end (delta: 120.6 MB). Free memory was 203.1 MB in the beginning and 215.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 108.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,448 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 248.0 MB. Free memory was 226.0 MB in the beginning and 225.2 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.42 ms. Allocated memory was 248.0 MB in the beginning and 305.1 MB in the end (delta: 57.1 MB). Free memory was 203.1 MB in the beginning and 256.8 MB in the end (delta: -53.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.93 ms. Allocated memory is still 305.1 MB. Free memory was 256.8 MB in the beginning and 255.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,456 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 305.1 MB. Free memory was 255.2 MB in the beginning and 253.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,456 INFO L168 Benchmark]: RCFGBuilder took 392.04 ms. Allocated memory is still 305.1 MB. Free memory was 253.4 MB in the beginning and 233.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,457 INFO L168 Benchmark]: TraceAbstraction took 3236.88 ms. Allocated memory was 305.1 MB in the beginning and 368.6 MB in the end (delta: 63.4 MB). Free memory was 233.0 MB in the beginning and 215.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:16,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 248.0 MB. Free memory was 226.0 MB in the beginning and 225.2 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 613.42 ms. Allocated memory was 248.0 MB in the beginning and 305.1 MB in the end (delta: 57.1 MB). Free memory was 203.1 MB in the beginning and 256.8 MB in the end (delta: -53.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.93 ms. Allocated memory is still 305.1 MB. Free memory was 256.8 MB in the beginning and 255.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 305.1 MB. Free memory was 255.2 MB in the beginning and 253.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 392.04 ms. Allocated memory is still 305.1 MB. Free memory was 253.4 MB in the beginning and 233.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3236.88 ms. Allocated memory was 305.1 MB in the beginning and 368.6 MB in the end (delta: 63.4 MB). Free memory was 233.0 MB in the beginning and 215.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 81.2 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 3 procedures, 54 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 141 SDslu, 295 SDs, 0 SdLazy, 317 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=4, 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, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 19554 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...