/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:41:36,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:41:36,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:41:36,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:41:36,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:41:36,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:41:36,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:41:36,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:41:36,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:41:36,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:41:36,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:41:36,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:41:36,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:41:36,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:41:36,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:41:36,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:41:36,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:41:36,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:41:36,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:41:36,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:41:36,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:41:36,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:41:36,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:41:36,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:41:36,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:41:36,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:41:36,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:41:36,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:41:36,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:41:36,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:41:36,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:41:36,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:41:36,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:41:36,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:41:36,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:41:36,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:41:36,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:41:36,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:41:36,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:41:36,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:41:36,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:41:36,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:41:36,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:41:36,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:41:36,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:41:36,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:41:36,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:41:36,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:41:36,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:41:36,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:41:36,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:41:36,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:41:36,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:41:36,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:41:36,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:41:36,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:41:36,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:41:36,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:41:36,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:41:36,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:41:36,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:41:36,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:41:36,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:41:36,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:41:36,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:41:36,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:41:37,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:41:37,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:41:37,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:41:37,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:41:37,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:41:37,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-10-16 01:41:37,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a129eac47/a5e7c350a52647c195b034df8061ff7c/FLAG2438974fa [2020-10-16 01:41:37,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:41:37,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2020-10-16 01:41:37,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a129eac47/a5e7c350a52647c195b034df8061ff7c/FLAG2438974fa [2020-10-16 01:41:38,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a129eac47/a5e7c350a52647c195b034df8061ff7c [2020-10-16 01:41:38,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:41:38,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:41:38,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:38,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:41:38,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:41:38,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34491526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38, skipping insertion in model container [2020-10-16 01:41:38,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:41:38,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:41:38,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:38,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:41:38,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:38,651 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:41:38,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38 WrapperNode [2020-10-16 01:41:38,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:38,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:38,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:41:38,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:41:38,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:38,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:41:38,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:41:38,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:41:38,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... [2020-10-16 01:41:38,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:41:38,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:41:38,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:41:38,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:41:38,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:41:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:41:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:41:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:41:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:41:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:41:38,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:41:38,799 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:41:38,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:41:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:41:38,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:41:38,801 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 01:41:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 01:41:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:41:38,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:41:38,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:41:38,804 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:41:39,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:41:39,135 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:41:39,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:39 BoogieIcfgContainer [2020-10-16 01:41:39,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:41:39,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:41:39,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:41:39,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:41:39,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:38" (1/3) ... [2020-10-16 01:41:39,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b8a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:39, skipping insertion in model container [2020-10-16 01:41:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:38" (2/3) ... [2020-10-16 01:41:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b8a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:39, skipping insertion in model container [2020-10-16 01:41:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:39" (3/3) ... [2020-10-16 01:41:39,146 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-10-16 01:41:39,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:41:39,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:41:39,164 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:41:39,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,199 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,200 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:39,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:41:39,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:41:39,276 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:41:39,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:41:39,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:41:39,277 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:41:39,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:41:39,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:41:39,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:41:39,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-16 01:41:39,339 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-16 01:41:39,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:39,345 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 01:41:39,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 81 transitions, 182 flow [2020-10-16 01:41:39,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 64 transitions, 140 flow [2020-10-16 01:41:39,354 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:41:39,356 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 64 transitions, 140 flow [2020-10-16 01:41:39,359 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 64 transitions, 140 flow [2020-10-16 01:41:39,360 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions, 140 flow [2020-10-16 01:41:39,401 INFO L129 PetriNetUnfolder]: 1/64 cut-off events. [2020-10-16 01:41:39,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:39,402 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 64 events. 1/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:41:39,406 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 01:41:40,791 INFO L132 LiptonReduction]: Checked pairs total: 1949 [2020-10-16 01:41:40,791 INFO L134 LiptonReduction]: Total number of compositions: 46 [2020-10-16 01:41:40,794 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1442 [2020-10-16 01:41:40,804 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2020-10-16 01:41:40,804 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:40,804 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:40,805 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:40,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 651694145, now seen corresponding path program 1 times [2020-10-16 01:41:40,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:40,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859736162] [2020-10-16 01:41:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859736162] [2020-10-16 01:41:41,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:41,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955693660] [2020-10-16 01:41:41,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:41,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:41,093 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 127 [2020-10-16 01:41:41,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states. [2020-10-16 01:41:41,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 127 [2020-10-16 01:41:41,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,129 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 01:41:41,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:41,130 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:41:41,131 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 01:41:41,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 58 flow [2020-10-16 01:41:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2020-10-16 01:41:41,146 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8766404199475065 [2020-10-16 01:41:41,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:41,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:41,163 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:41,165 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 334 transitions. [2020-10-16 01:41:41,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 58 flow [2020-10-16 01:41:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:41,171 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2020-10-16 01:41:41,173 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 01:41:41,174 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 01:41:41,175 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2020-10-16 01:41:41,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:41,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,175 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:41:41,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash -184313190, now seen corresponding path program 1 times [2020-10-16 01:41:41,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446561283] [2020-10-16 01:41:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446561283] [2020-10-16 01:41:41,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:41,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465049700] [2020-10-16 01:41:41,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:41,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:41,254 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 01:41:41,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states. [2020-10-16 01:41:41,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 01:41:41,255 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,294 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2020-10-16 01:41:41,294 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2020-10-16 01:41:41,295 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 45 events. 6/45 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 130 event pairs, 0 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 01:41:41,295 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/25 dead transitions. [2020-10-16 01:41:41,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 89 flow [2020-10-16 01:41:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2020-10-16 01:41:41,300 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2020-10-16 01:41:41,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2020-10-16 01:41:41,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2020-10-16 01:41:41,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2020-10-16 01:41:41,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:41,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:41,306 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:41,306 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 424 transitions. [2020-10-16 01:41:41,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 89 flow [2020-10-16 01:41:41,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 83 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:41,308 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 78 flow [2020-10-16 01:41:41,308 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 01:41:41,309 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 01:41:41,309 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 78 flow [2020-10-16 01:41:41,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:41,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,309 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:41:41,310 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,310 INFO L82 PathProgramCache]: Analyzing trace with hash -787763169, now seen corresponding path program 1 times [2020-10-16 01:41:41,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978931972] [2020-10-16 01:41:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978931972] [2020-10-16 01:41:41,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:41,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259721201] [2020-10-16 01:41:41,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:41,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:41,406 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 127 [2020-10-16 01:41:41,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 78 flow. Second operand 3 states. [2020-10-16 01:41:41,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 127 [2020-10-16 01:41:41,407 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,425 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2020-10-16 01:41:41,426 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-16 01:41:41,426 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 31 events. 3/31 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 1 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2020-10-16 01:41:41,427 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 01:41:41,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 84 flow [2020-10-16 01:41:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2020-10-16 01:41:41,430 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8766404199475065 [2020-10-16 01:41:41,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2020-10-16 01:41:41,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:41,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:41,433 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:41,433 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 78 flow. Second operand 3 states and 334 transitions. [2020-10-16 01:41:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 84 flow [2020-10-16 01:41:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 75 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:41,435 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 77 flow [2020-10-16 01:41:41,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 01:41:41,436 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 01:41:41,436 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 77 flow [2020-10-16 01:41:41,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:41,436 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,436 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:41:41,437 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1367500132, now seen corresponding path program 1 times [2020-10-16 01:41:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155106602] [2020-10-16 01:41:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155106602] [2020-10-16 01:41:41,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:41,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892705522] [2020-10-16 01:41:41,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:41,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:41,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:41,483 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 01:41:41,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 77 flow. Second operand 4 states. [2020-10-16 01:41:41,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 01:41:41,484 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,515 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2020-10-16 01:41:41,515 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-10-16 01:41:41,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 0/40 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2020-10-16 01:41:41,516 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/24 dead transitions. [2020-10-16 01:41:41,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 102 flow [2020-10-16 01:41:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:41:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:41:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2020-10-16 01:41:41,519 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8283464566929134 [2020-10-16 01:41:41,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2020-10-16 01:41:41,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2020-10-16 01:41:41,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2020-10-16 01:41:41,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:41:41,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:41:41,523 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:41:41,523 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 77 flow. Second operand 5 states and 526 transitions. [2020-10-16 01:41:41,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 102 flow [2020-10-16 01:41:41,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:41,525 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 90 flow [2020-10-16 01:41:41,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2020-10-16 01:41:41,525 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 01:41:41,526 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 90 flow [2020-10-16 01:41:41,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:41,526 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,526 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:41:41,526 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1349777370, now seen corresponding path program 1 times [2020-10-16 01:41:41,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52823718] [2020-10-16 01:41:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52823718] [2020-10-16 01:41:41,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:41,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836399461] [2020-10-16 01:41:41,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:41,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:41,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:41,573 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 01:41:41,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 90 flow. Second operand 4 states. [2020-10-16 01:41:41,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 01:41:41,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,617 INFO L129 PetriNetUnfolder]: 7/70 cut-off events. [2020-10-16 01:41:41,617 INFO L130 PetriNetUnfolder]: For 250/257 co-relation queries the response was YES. [2020-10-16 01:41:41,618 INFO L80 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 70 events. 7/70 cut-off events. For 250/257 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 299 event pairs, 2 based on Foata normal form. 8/74 useless extension candidates. Maximal degree in co-relation 161. Up to 18 conditions per place. [2020-10-16 01:41:41,619 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2020-10-16 01:41:41,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 113 flow [2020-10-16 01:41:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2020-10-16 01:41:41,622 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8307086614173228 [2020-10-16 01:41:41,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2020-10-16 01:41:41,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2020-10-16 01:41:41,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2020-10-16 01:41:41,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:41,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:41,625 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:41,625 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 90 flow. Second operand 4 states and 422 transitions. [2020-10-16 01:41:41,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 113 flow [2020-10-16 01:41:41,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 104 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:41,629 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 95 flow [2020-10-16 01:41:41,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2020-10-16 01:41:41,630 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 01:41:41,630 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 95 flow [2020-10-16 01:41:41,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:41,630 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,630 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:41:41,631 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash -552410563, now seen corresponding path program 1 times [2020-10-16 01:41:41,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426361372] [2020-10-16 01:41:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426361372] [2020-10-16 01:41:41,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:41,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634964003] [2020-10-16 01:41:41,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:41,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:41,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:41,774 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 01:41:41,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 95 flow. Second operand 4 states. [2020-10-16 01:41:41,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 01:41:41,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:41,858 INFO L129 PetriNetUnfolder]: 185/340 cut-off events. [2020-10-16 01:41:41,858 INFO L130 PetriNetUnfolder]: For 1110/1179 co-relation queries the response was YES. [2020-10-16 01:41:41,860 INFO L80 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 340 events. 185/340 cut-off events. For 1110/1179 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 1728 event pairs, 91 based on Foata normal form. 26/333 useless extension candidates. Maximal degree in co-relation 823. Up to 243 conditions per place. [2020-10-16 01:41:41,862 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/35 dead transitions. [2020-10-16 01:41:41,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 161 flow [2020-10-16 01:41:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:41:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:41:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2020-10-16 01:41:41,865 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7984251968503937 [2020-10-16 01:41:41,865 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2020-10-16 01:41:41,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2020-10-16 01:41:41,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:41,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2020-10-16 01:41:41,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:41:41,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:41:41,869 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:41:41,869 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 95 flow. Second operand 5 states and 507 transitions. [2020-10-16 01:41:41,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 161 flow [2020-10-16 01:41:41,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 149 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:41,872 INFO L241 Difference]: Finished difference. Result has 43 places, 26 transitions, 128 flow [2020-10-16 01:41:41,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2020-10-16 01:41:41,873 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2020-10-16 01:41:41,873 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 128 flow [2020-10-16 01:41:41,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:41,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:41,873 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:41,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:41:41,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:41,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1324778427, now seen corresponding path program 1 times [2020-10-16 01:41:41,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:41,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911468944] [2020-10-16 01:41:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911468944] [2020-10-16 01:41:41,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:41,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171669005] [2020-10-16 01:41:41,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:41:41,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:41,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:41:41,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:41:41,987 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 01:41:41,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 128 flow. Second operand 5 states. [2020-10-16 01:41:41,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:41,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 01:41:41,988 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:42,085 INFO L129 PetriNetUnfolder]: 133/266 cut-off events. [2020-10-16 01:41:42,085 INFO L130 PetriNetUnfolder]: For 913/1311 co-relation queries the response was YES. [2020-10-16 01:41:42,087 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 266 events. 133/266 cut-off events. For 913/1311 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1258 event pairs, 25 based on Foata normal form. 50/300 useless extension candidates. Maximal degree in co-relation 1050. Up to 229 conditions per place. [2020-10-16 01:41:42,089 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/39 dead transitions. [2020-10-16 01:41:42,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 252 flow [2020-10-16 01:41:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:41:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:41:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2020-10-16 01:41:42,092 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7979002624671916 [2020-10-16 01:41:42,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 608 transitions. [2020-10-16 01:41:42,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 608 transitions. [2020-10-16 01:41:42,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:42,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 608 transitions. [2020-10-16 01:41:42,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:41:42,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:41:42,096 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:41:42,096 INFO L185 Difference]: Start difference. First operand has 43 places, 26 transitions, 128 flow. Second operand 6 states and 608 transitions. [2020-10-16 01:41:42,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 252 flow [2020-10-16 01:41:42,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:42,102 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 193 flow [2020-10-16 01:41:42,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2020-10-16 01:41:42,102 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 01:41:42,103 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 193 flow [2020-10-16 01:41:42,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:41:42,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:42,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:42,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:41:42,103 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:42,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1209272257, now seen corresponding path program 1 times [2020-10-16 01:41:42,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:42,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814078555] [2020-10-16 01:41:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:42,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814078555] [2020-10-16 01:41:42,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:42,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:41:42,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390510644] [2020-10-16 01:41:42,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:41:42,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:41:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:41:42,212 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 01:41:42,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 193 flow. Second operand 6 states. [2020-10-16 01:41:42,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:42,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 01:41:42,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:42,308 INFO L129 PetriNetUnfolder]: 74/170 cut-off events. [2020-10-16 01:41:42,308 INFO L130 PetriNetUnfolder]: For 967/1381 co-relation queries the response was YES. [2020-10-16 01:41:42,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 170 events. 74/170 cut-off events. For 967/1381 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 719 event pairs, 3 based on Foata normal form. 57/218 useless extension candidates. Maximal degree in co-relation 894. Up to 145 conditions per place. [2020-10-16 01:41:42,312 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 13 changer transitions 9/43 dead transitions. [2020-10-16 01:41:42,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 375 flow [2020-10-16 01:41:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 709 transitions. [2020-10-16 01:41:42,315 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7975253093363329 [2020-10-16 01:41:42,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 709 transitions. [2020-10-16 01:41:42,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 709 transitions. [2020-10-16 01:41:42,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:42,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 709 transitions. [2020-10-16 01:41:42,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:42,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:42,321 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:42,321 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 193 flow. Second operand 7 states and 709 transitions. [2020-10-16 01:41:42,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 375 flow [2020-10-16 01:41:42,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 313 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:42,326 INFO L241 Difference]: Finished difference. Result has 50 places, 34 transitions, 243 flow [2020-10-16 01:41:42,326 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2020-10-16 01:41:42,327 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 01:41:42,327 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 243 flow [2020-10-16 01:41:42,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:41:42,327 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:42,327 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:42,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:41:42,328 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 188844575, now seen corresponding path program 1 times [2020-10-16 01:41:42,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:42,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423494213] [2020-10-16 01:41:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:42,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423494213] [2020-10-16 01:41:42,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:42,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:41:42,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585837663] [2020-10-16 01:41:42,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:41:42,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:41:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:41:42,438 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 01:41:42,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 243 flow. Second operand 7 states. [2020-10-16 01:41:42,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:42,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 01:41:42,439 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:42,534 INFO L129 PetriNetUnfolder]: 44/110 cut-off events. [2020-10-16 01:41:42,535 INFO L130 PetriNetUnfolder]: For 558/794 co-relation queries the response was YES. [2020-10-16 01:41:42,535 INFO L80 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 110 events. 44/110 cut-off events. For 558/794 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 408 event pairs, 0 based on Foata normal form. 56/157 useless extension candidates. Maximal degree in co-relation 556. Up to 83 conditions per place. [2020-10-16 01:41:42,537 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 2 selfloop transitions, 17 changer transitions 7/39 dead transitions. [2020-10-16 01:41:42,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 347 flow [2020-10-16 01:41:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 01:41:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 01:41:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 802 transitions. [2020-10-16 01:41:42,541 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7893700787401575 [2020-10-16 01:41:42,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 802 transitions. [2020-10-16 01:41:42,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 802 transitions. [2020-10-16 01:41:42,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:42,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 802 transitions. [2020-10-16 01:41:42,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 01:41:42,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 01:41:42,555 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 01:41:42,555 INFO L185 Difference]: Start difference. First operand has 50 places, 34 transitions, 243 flow. Second operand 8 states and 802 transitions. [2020-10-16 01:41:42,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 347 flow [2020-10-16 01:41:42,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 285 flow, removed 22 selfloop flow, removed 5 redundant places. [2020-10-16 01:41:42,564 INFO L241 Difference]: Finished difference. Result has 53 places, 32 transitions, 226 flow [2020-10-16 01:41:42,565 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2020-10-16 01:41:42,565 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2020-10-16 01:41:42,565 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 226 flow [2020-10-16 01:41:42,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:41:42,565 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:42,565 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] [2020-10-16 01:41:42,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:41:42,566 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash -90365718, now seen corresponding path program 1 times [2020-10-16 01:41:42,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:42,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008994177] [2020-10-16 01:41:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:42,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008994177] [2020-10-16 01:41:42,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:42,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:42,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405507652] [2020-10-16 01:41:42,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:42,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:42,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:42,618 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 01:41:42,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 226 flow. Second operand 4 states. [2020-10-16 01:41:42,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:42,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 01:41:42,619 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:42,638 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-10-16 01:41:42,638 INFO L130 PetriNetUnfolder]: For 110/130 co-relation queries the response was YES. [2020-10-16 01:41:42,639 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 47 events. 17/47 cut-off events. For 110/130 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 0 based on Foata normal form. 3/45 useless extension candidates. Maximal degree in co-relation 169. Up to 18 conditions per place. [2020-10-16 01:41:42,639 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2020-10-16 01:41:42,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 31 transitions, 218 flow [2020-10-16 01:41:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2020-10-16 01:41:42,641 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8208661417322834 [2020-10-16 01:41:42,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2020-10-16 01:41:42,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2020-10-16 01:41:42,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:42,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2020-10-16 01:41:42,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:42,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:42,644 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:42,644 INFO L185 Difference]: Start difference. First operand has 53 places, 32 transitions, 226 flow. Second operand 4 states and 417 transitions. [2020-10-16 01:41:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 31 transitions, 218 flow [2020-10-16 01:41:42,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 152 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 01:41:42,646 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 01:41:42,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 01:41:42,647 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2020-10-16 01:41:42,648 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 01:41:42,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:42,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:41:42,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:42 BasicIcfg [2020-10-16 01:41:42,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:41:42,659 INFO L168 Benchmark]: Toolchain (without parser) took 4593.59 ms. Allocated memory was 256.9 MB in the beginning and 428.3 MB in the end (delta: 171.4 MB). Free memory was 212.0 MB in the beginning and 351.4 MB in the end (delta: -139.4 MB). Peak memory consumption was 32.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,659 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 256.9 MB. Free memory is still 233.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:41:42,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.93 ms. Allocated memory was 256.9 MB in the beginning and 327.7 MB in the end (delta: 70.8 MB). Free memory was 212.0 MB in the beginning and 281.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 327.7 MB. Free memory was 281.6 MB in the beginning and 278.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,661 INFO L168 Benchmark]: Boogie Preprocessor took 24.26 ms. Allocated memory is still 327.7 MB. Free memory was 278.5 MB in the beginning and 276.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,665 INFO L168 Benchmark]: RCFGBuilder took 401.91 ms. Allocated memory is still 327.7 MB. Free memory was 276.0 MB in the beginning and 251.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,665 INFO L168 Benchmark]: TraceAbstraction took 3513.03 ms. Allocated memory was 327.7 MB in the beginning and 428.3 MB in the end (delta: 100.7 MB). Free memory was 251.6 MB in the beginning and 351.4 MB in the end (delta: -99.8 MB). Peak memory consumption was 850.9 kB. Max. memory is 14.2 GB. [2020-10-16 01:41:42,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 256.9 MB. Free memory is still 233.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 590.93 ms. Allocated memory was 256.9 MB in the beginning and 327.7 MB in the end (delta: 70.8 MB). Free memory was 212.0 MB in the beginning and 281.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 327.7 MB. Free memory was 281.6 MB in the beginning and 278.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.26 ms. Allocated memory is still 327.7 MB. Free memory was 278.5 MB in the beginning and 276.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 401.91 ms. Allocated memory is still 327.7 MB. Free memory was 276.0 MB in the beginning and 251.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3513.03 ms. Allocated memory was 327.7 MB in the beginning and 428.3 MB in the end (delta: 100.7 MB). Free memory was 251.6 MB in the beginning and 351.4 MB in the end (delta: -99.8 MB). Peak memory consumption was 850.9 kB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 747 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 77 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 76 PlacesBefore, 33 PlacesAfterwards, 64 TransitionsBefore, 20 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1949 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 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: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 34 SDtfs, 27 SDslu, 25 SDs, 0 SdLazy, 200 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=8, 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, 0.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...