/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:42:37,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:42:37,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:42:38,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:42:38,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:42:38,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:42:38,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:42:38,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:42:38,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:42:38,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:42:38,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:42:38,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:42:38,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:42:38,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:42:38,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:42:38,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:42:38,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:42:38,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:42:38,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:42:38,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:42:38,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:42:38,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:42:38,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:42:38,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:42:38,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:42:38,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:42:38,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:42:38,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:42:38,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:42:38,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:42:38,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:42:38,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:42:38,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:42:38,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:42:38,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:42:38,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:42:38,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:42:38,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:42:38,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:42:38,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:42:38,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:42:38,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:42:38,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:42:38,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:42:38,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:42:38,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:42:38,084 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:42:38,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:42:38,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:42:38,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:42:38,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:42:38,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:42:38,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:42:38,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:42:38,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:42:38,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:42:38,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:42:38,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:42:38,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:42:38,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:42:38,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:42:38,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:42:38,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:42:38,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:42:38,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:42:38,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:42:38,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:42:38,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:42:38,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:42:38,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:42:38,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:42:38,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:42:38,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-10-11 18:42:38,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df63e034/48cb6beb566d424cab3b1cb484a66195/FLAG5687753e3 [2020-10-11 18:42:39,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:42:39,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-10-11 18:42:39,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df63e034/48cb6beb566d424cab3b1cb484a66195/FLAG5687753e3 [2020-10-11 18:42:39,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df63e034/48cb6beb566d424cab3b1cb484a66195 [2020-10-11 18:42:39,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:42:39,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:42:39,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:42:39,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:42:39,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:42:39,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:42:39" (1/1) ... [2020-10-11 18:42:39,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13987d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:39, skipping insertion in model container [2020-10-11 18:42:39,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:42:39" (1/1) ... [2020-10-11 18:42:39,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:42:39,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:42:39,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:42:39,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:42:40,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:42:40,122 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:42:40,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40 WrapperNode [2020-10-11 18:42:40,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:42:40,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:42:40,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:42:40,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:42:40,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:42:40,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:42:40,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:42:40,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:42:40,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... [2020-10-11 18:42:40,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:42:40,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:42:40,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:42:40,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:42:40,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:42:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:42:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:42:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:42:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:42:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:42:40,271 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:42:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:42:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:42:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:42:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:42:40,273 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-11 18:42:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-11 18:42:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:42:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:42:40,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:42:40,276 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:42:40,709 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:42:40,709 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:42:40,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:42:40 BoogieIcfgContainer [2020-10-11 18:42:40,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:42:40,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:42:40,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:42:40,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:42:40,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:42:39" (1/3) ... [2020-10-11 18:42:40,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c193fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:42:40, skipping insertion in model container [2020-10-11 18:42:40,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:42:40" (2/3) ... [2020-10-11 18:42:40,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c193fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:42:40, skipping insertion in model container [2020-10-11 18:42:40,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:42:40" (3/3) ... [2020-10-11 18:42:40,721 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-10-11 18:42:40,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:42:40,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:42:40,740 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:42:40,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,769 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,769 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,772 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,772 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,772 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,773 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,773 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,773 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,777 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,777 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,778 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,778 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,788 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,788 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:42:40,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 18:42:40,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:42:40,830 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:42:40,831 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:42:40,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:42:40,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:42:40,831 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:42:40,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:42:40,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:42:40,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-10-11 18:42:40,891 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-10-11 18:42:40,891 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:42:40,897 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-11 18:42:40,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 82 transitions, 184 flow [2020-10-11 18:42:40,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 142 flow [2020-10-11 18:42:40,927 INFO L129 PetriNetUnfolder]: 1/64 cut-off events. [2020-10-11 18:42:40,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:42:40,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:40,929 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:40,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1315035169, now seen corresponding path program 1 times [2020-10-11 18:42:40,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:40,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166209158] [2020-10-11 18:42:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:41,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166209158] [2020-10-11 18:42:41,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:41,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:42:41,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574613813] [2020-10-11 18:42:41,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:42:41,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:42:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:42:41,594 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 82 [2020-10-11 18:42:41,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 142 flow. Second operand 6 states. [2020-10-11 18:42:41,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:41,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 82 [2020-10-11 18:42:41,598 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:41,769 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2020-10-11 18:42:41,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:42:41,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 79 events. 3/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 85. Up to 7 conditions per place. [2020-10-11 18:42:41,772 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 6 selfloop transitions, 2 changer transitions 11/74 dead transitions. [2020-10-11 18:42:41,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 196 flow [2020-10-11 18:42:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:42:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:42:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2020-10-11 18:42:41,792 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.907859078590786 [2020-10-11 18:42:41,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2020-10-11 18:42:41,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2020-10-11 18:42:41,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:41,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2020-10-11 18:42:41,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:42:41,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:42:41,816 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:42:41,819 INFO L185 Difference]: Start difference. First operand has 77 places, 65 transitions, 142 flow. Second operand 9 states and 670 transitions. [2020-10-11 18:42:41,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 196 flow [2020-10-11 18:42:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 18:42:41,829 INFO L241 Difference]: Finished difference. Result has 88 places, 63 transitions, 154 flow [2020-10-11 18:42:41,832 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=88, PETRI_TRANSITIONS=63} [2020-10-11 18:42:41,833 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2020-10-11 18:42:41,834 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 63 transitions, 154 flow [2020-10-11 18:42:41,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:42:41,834 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:41,834 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:41,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:42:41,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -620534110, now seen corresponding path program 1 times [2020-10-11 18:42:41,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:41,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781643280] [2020-10-11 18:42:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:41,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781643280] [2020-10-11 18:42:41,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:41,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:42:41,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108245612] [2020-10-11 18:42:41,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:42:41,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:41,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:42:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:42:42,145 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 82 [2020-10-11 18:42:42,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 63 transitions, 154 flow. Second operand 6 states. [2020-10-11 18:42:42,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:42,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 82 [2020-10-11 18:42:42,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:42,259 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2020-10-11 18:42:42,259 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:42:42,260 INFO L80 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 78 events. 3/78 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 119. Up to 7 conditions per place. [2020-10-11 18:42:42,260 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 6 selfloop transitions, 2 changer transitions 10/73 dead transitions. [2020-10-11 18:42:42,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 228 flow [2020-10-11 18:42:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:42:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:42:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2020-10-11 18:42:42,264 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9051490514905149 [2020-10-11 18:42:42,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2020-10-11 18:42:42,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2020-10-11 18:42:42,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:42,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2020-10-11 18:42:42,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:42:42,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:42:42,270 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:42:42,270 INFO L185 Difference]: Start difference. First operand has 88 places, 63 transitions, 154 flow. Second operand 9 states and 668 transitions. [2020-10-11 18:42:42,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 228 flow [2020-10-11 18:42:42,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 196 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:42:42,275 INFO L241 Difference]: Finished difference. Result has 88 places, 63 transitions, 158 flow [2020-10-11 18:42:42,275 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=88, PETRI_TRANSITIONS=63} [2020-10-11 18:42:42,276 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2020-10-11 18:42:42,276 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 63 transitions, 158 flow [2020-10-11 18:42:42,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:42:42,277 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:42,277 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:42,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:42:42,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1054644803, now seen corresponding path program 1 times [2020-10-11 18:42:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:42,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019057112] [2020-10-11 18:42:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:42,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019057112] [2020-10-11 18:42:42,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:42,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:42:42,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479301056] [2020-10-11 18:42:42,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:42:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:42,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:42:42,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:42:42,672 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2020-10-11 18:42:42,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 63 transitions, 158 flow. Second operand 7 states. [2020-10-11 18:42:42,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:42,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2020-10-11 18:42:42,674 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:42,850 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2020-10-11 18:42:42,851 INFO L130 PetriNetUnfolder]: For 22/29 co-relation queries the response was YES. [2020-10-11 18:42:42,852 INFO L80 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 84 events. 4/84 cut-off events. For 22/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 2/85 useless extension candidates. Maximal degree in co-relation 136. Up to 7 conditions per place. [2020-10-11 18:42:42,852 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 6 selfloop transitions, 4 changer transitions 12/75 dead transitions. [2020-10-11 18:42:42,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 75 transitions, 251 flow [2020-10-11 18:42:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:42:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:42:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2020-10-11 18:42:42,857 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8829268292682927 [2020-10-11 18:42:42,857 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 724 transitions. [2020-10-11 18:42:42,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 724 transitions. [2020-10-11 18:42:42,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:42,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 724 transitions. [2020-10-11 18:42:42,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:42:42,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:42:42,874 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:42:42,874 INFO L185 Difference]: Start difference. First operand has 88 places, 63 transitions, 158 flow. Second operand 10 states and 724 transitions. [2020-10-11 18:42:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 75 transitions, 251 flow [2020-10-11 18:42:42,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 219 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:42:42,878 INFO L241 Difference]: Finished difference. Result has 91 places, 63 transitions, 172 flow [2020-10-11 18:42:42,879 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2020-10-11 18:42:42,879 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2020-10-11 18:42:42,879 INFO L481 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 172 flow [2020-10-11 18:42:42,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:42:42,879 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:42,880 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:42,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:42:42,880 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:42,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash -931691630, now seen corresponding path program 1 times [2020-10-11 18:42:42,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:42,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095394561] [2020-10-11 18:42:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:43,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095394561] [2020-10-11 18:42:43,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:43,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:42:43,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645387449] [2020-10-11 18:42:43,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:42:43,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:43,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:42:43,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:42:43,218 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2020-10-11 18:42:43,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 172 flow. Second operand 7 states. [2020-10-11 18:42:43,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:43,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2020-10-11 18:42:43,219 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:43,393 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2020-10-11 18:42:43,395 INFO L130 PetriNetUnfolder]: For 51/61 co-relation queries the response was YES. [2020-10-11 18:42:43,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 84 events. 4/84 cut-off events. For 51/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2020-10-11 18:42:43,397 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 6 selfloop transitions, 4 changer transitions 12/75 dead transitions. [2020-10-11 18:42:43,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 273 flow [2020-10-11 18:42:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:42:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:42:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2020-10-11 18:42:43,404 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8829268292682927 [2020-10-11 18:42:43,404 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 724 transitions. [2020-10-11 18:42:43,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 724 transitions. [2020-10-11 18:42:43,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:43,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 724 transitions. [2020-10-11 18:42:43,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:42:43,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:42:43,418 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:42:43,418 INFO L185 Difference]: Start difference. First operand has 91 places, 63 transitions, 172 flow. Second operand 10 states and 724 transitions. [2020-10-11 18:42:43,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 273 flow [2020-10-11 18:42:43,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 223 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-11 18:42:43,423 INFO L241 Difference]: Finished difference. Result has 92 places, 63 transitions, 176 flow [2020-10-11 18:42:43,423 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2020-10-11 18:42:43,423 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2020-10-11 18:42:43,423 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 176 flow [2020-10-11 18:42:43,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:42:43,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:43,424 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:43,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:42:43,424 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1625882267, now seen corresponding path program 1 times [2020-10-11 18:42:43,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:43,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360539747] [2020-10-11 18:42:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:43,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360539747] [2020-10-11 18:42:43,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:43,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:42:43,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843536654] [2020-10-11 18:42:43,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:42:43,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:42:43,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:42:43,687 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2020-10-11 18:42:43,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 176 flow. Second operand 6 states. [2020-10-11 18:42:43,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:43,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2020-10-11 18:42:43,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:43,906 INFO L129 PetriNetUnfolder]: 270/620 cut-off events. [2020-10-11 18:42:43,906 INFO L130 PetriNetUnfolder]: For 140/143 co-relation queries the response was YES. [2020-10-11 18:42:43,911 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 620 events. 270/620 cut-off events. For 140/143 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3723 event pairs, 12 based on Foata normal form. 16/630 useless extension candidates. Maximal degree in co-relation 1190. Up to 216 conditions per place. [2020-10-11 18:42:43,915 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 12 selfloop transitions, 7 changer transitions 23/94 dead transitions. [2020-10-11 18:42:43,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 322 flow [2020-10-11 18:42:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:42:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:42:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 656 transitions. [2020-10-11 18:42:43,918 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:42:43,918 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 656 transitions. [2020-10-11 18:42:43,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 656 transitions. [2020-10-11 18:42:43,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:43,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 656 transitions. [2020-10-11 18:42:43,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:42:43,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:42:43,923 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:42:43,923 INFO L185 Difference]: Start difference. First operand has 92 places, 63 transitions, 176 flow. Second operand 9 states and 656 transitions. [2020-10-11 18:42:43,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 322 flow [2020-10-11 18:42:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 296 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-11 18:42:43,929 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 218 flow [2020-10-11 18:42:43,930 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2020-10-11 18:42:43,930 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2020-10-11 18:42:43,930 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 218 flow [2020-10-11 18:42:43,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:42:43,930 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:43,931 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:43,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:42:43,931 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash 396288849, now seen corresponding path program 1 times [2020-10-11 18:42:43,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:43,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340678688] [2020-10-11 18:42:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:44,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340678688] [2020-10-11 18:42:44,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:44,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:42:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197581533] [2020-10-11 18:42:44,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:42:44,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:42:44,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:42:44,228 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2020-10-11 18:42:44,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 218 flow. Second operand 7 states. [2020-10-11 18:42:44,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:44,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2020-10-11 18:42:44,229 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:44,461 INFO L129 PetriNetUnfolder]: 198/486 cut-off events. [2020-10-11 18:42:44,461 INFO L130 PetriNetUnfolder]: For 909/947 co-relation queries the response was YES. [2020-10-11 18:42:44,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 486 events. 198/486 cut-off events. For 909/947 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2630 event pairs, 2 based on Foata normal form. 23/506 useless extension candidates. Maximal degree in co-relation 1653. Up to 251 conditions per place. [2020-10-11 18:42:44,468 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 12 selfloop transitions, 11 changer transitions 23/98 dead transitions. [2020-10-11 18:42:44,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 535 flow [2020-10-11 18:42:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:42:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:42:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2020-10-11 18:42:44,471 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8878048780487805 [2020-10-11 18:42:44,472 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2020-10-11 18:42:44,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2020-10-11 18:42:44,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:44,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2020-10-11 18:42:44,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:42:44,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:42:44,476 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:42:44,476 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 218 flow. Second operand 10 states and 728 transitions. [2020-10-11 18:42:44,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 535 flow [2020-10-11 18:42:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 510 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:42:44,481 INFO L241 Difference]: Finished difference. Result has 96 places, 71 transitions, 306 flow [2020-10-11 18:42:44,482 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2020-10-11 18:42:44,482 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2020-10-11 18:42:44,482 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 306 flow [2020-10-11 18:42:44,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:42:44,483 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:44,483 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:44,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:42:44,483 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1628567370, now seen corresponding path program 1 times [2020-10-11 18:42:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:44,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159995404] [2020-10-11 18:42:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:44,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159995404] [2020-10-11 18:42:44,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:44,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:42:44,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422124543] [2020-10-11 18:42:44,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:42:44,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:42:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:42:44,687 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2020-10-11 18:42:44,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 306 flow. Second operand 8 states. [2020-10-11 18:42:44,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:44,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2020-10-11 18:42:44,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:44,952 INFO L129 PetriNetUnfolder]: 96/290 cut-off events. [2020-10-11 18:42:44,952 INFO L130 PetriNetUnfolder]: For 1588/1677 co-relation queries the response was YES. [2020-10-11 18:42:44,954 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 290 events. 96/290 cut-off events. For 1588/1677 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1267 event pairs, 0 based on Foata normal form. 25/312 useless extension candidates. Maximal degree in co-relation 1278. Up to 133 conditions per place. [2020-10-11 18:42:44,958 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 12 selfloop transitions, 15 changer transitions 23/102 dead transitions. [2020-10-11 18:42:44,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 784 flow [2020-10-11 18:42:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:42:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:42:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 800 transitions. [2020-10-11 18:42:44,962 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8869179600886918 [2020-10-11 18:42:44,962 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 800 transitions. [2020-10-11 18:42:44,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 800 transitions. [2020-10-11 18:42:44,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:44,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 800 transitions. [2020-10-11 18:42:44,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:42:44,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:42:44,967 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:42:44,968 INFO L185 Difference]: Start difference. First operand has 96 places, 71 transitions, 306 flow. Second operand 11 states and 800 transitions. [2020-10-11 18:42:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 784 flow [2020-10-11 18:42:44,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 604 flow, removed 79 selfloop flow, removed 9 redundant places. [2020-10-11 18:42:44,975 INFO L241 Difference]: Finished difference. Result has 99 places, 75 transitions, 356 flow [2020-10-11 18:42:44,975 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2020-10-11 18:42:44,975 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2020-10-11 18:42:44,976 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 356 flow [2020-10-11 18:42:44,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:42:44,976 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:44,976 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:44,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:42:44,977 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1484703251, now seen corresponding path program 1 times [2020-10-11 18:42:44,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:44,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323101616] [2020-10-11 18:42:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:45,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323101616] [2020-10-11 18:42:45,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:45,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:42:45,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291530809] [2020-10-11 18:42:45,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:42:45,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:45,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:42:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:42:45,301 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2020-10-11 18:42:45,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 356 flow. Second operand 7 states. [2020-10-11 18:42:45,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:45,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2020-10-11 18:42:45,302 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:45,456 INFO L129 PetriNetUnfolder]: 62/323 cut-off events. [2020-10-11 18:42:45,457 INFO L130 PetriNetUnfolder]: For 1025/1115 co-relation queries the response was YES. [2020-10-11 18:42:45,458 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 323 events. 62/323 cut-off events. For 1025/1115 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1581 event pairs, 6 based on Foata normal form. 11/320 useless extension candidates. Maximal degree in co-relation 1015. Up to 96 conditions per place. [2020-10-11 18:42:45,460 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 13 selfloop transitions, 2 changer transitions 4/84 dead transitions. [2020-10-11 18:42:45,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 84 transitions, 416 flow [2020-10-11 18:42:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:42:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:42:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 510 transitions. [2020-10-11 18:42:45,463 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8885017421602788 [2020-10-11 18:42:45,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 510 transitions. [2020-10-11 18:42:45,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 510 transitions. [2020-10-11 18:42:45,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:45,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 510 transitions. [2020-10-11 18:42:45,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:42:45,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:42:45,467 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:42:45,467 INFO L185 Difference]: Start difference. First operand has 99 places, 75 transitions, 356 flow. Second operand 7 states and 510 transitions. [2020-10-11 18:42:45,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 84 transitions, 416 flow [2020-10-11 18:42:45,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 331 flow, removed 29 selfloop flow, removed 10 redundant places. [2020-10-11 18:42:45,472 INFO L241 Difference]: Finished difference. Result has 96 places, 76 transitions, 290 flow [2020-10-11 18:42:45,472 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2020-10-11 18:42:45,472 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2020-10-11 18:42:45,472 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 290 flow [2020-10-11 18:42:45,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:42:45,473 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:45,473 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:42:45,473 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 422303755, now seen corresponding path program 2 times [2020-10-11 18:42:45,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:45,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938959063] [2020-10-11 18:42:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:45,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938959063] [2020-10-11 18:42:45,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:45,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 18:42:45,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386057616] [2020-10-11 18:42:45,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 18:42:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 18:42:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 18:42:45,764 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2020-10-11 18:42:45,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 290 flow. Second operand 9 states. [2020-10-11 18:42:45,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:45,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2020-10-11 18:42:45,766 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:46,006 INFO L129 PetriNetUnfolder]: 64/267 cut-off events. [2020-10-11 18:42:46,006 INFO L130 PetriNetUnfolder]: For 622/841 co-relation queries the response was YES. [2020-10-11 18:42:46,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 267 events. 64/267 cut-off events. For 622/841 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1211 event pairs, 0 based on Foata normal form. 49/306 useless extension candidates. Maximal degree in co-relation 797. Up to 77 conditions per place. [2020-10-11 18:42:46,008 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 4 selfloop transitions, 19 changer transitions 16/91 dead transitions. [2020-10-11 18:42:46,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 91 transitions, 493 flow [2020-10-11 18:42:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 18:42:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 18:42:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 856 transitions. [2020-10-11 18:42:46,012 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8699186991869918 [2020-10-11 18:42:46,012 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 856 transitions. [2020-10-11 18:42:46,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 856 transitions. [2020-10-11 18:42:46,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:46,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 856 transitions. [2020-10-11 18:42:46,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 18:42:46,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 18:42:46,017 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 18:42:46,017 INFO L185 Difference]: Start difference. First operand has 96 places, 76 transitions, 290 flow. Second operand 12 states and 856 transitions. [2020-10-11 18:42:46,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 91 transitions, 493 flow [2020-10-11 18:42:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 454 flow, removed 17 selfloop flow, removed 6 redundant places. [2020-10-11 18:42:46,022 INFO L241 Difference]: Finished difference. Result has 104 places, 75 transitions, 324 flow [2020-10-11 18:42:46,022 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=324, PETRI_PLACES=104, PETRI_TRANSITIONS=75} [2020-10-11 18:42:46,022 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2020-10-11 18:42:46,022 INFO L481 AbstractCegarLoop]: Abstraction has has 104 places, 75 transitions, 324 flow [2020-10-11 18:42:46,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 18:42:46,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:42:46,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:42:46,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:42:46,023 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:42:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:42:46,024 INFO L82 PathProgramCache]: Analyzing trace with hash -51761300, now seen corresponding path program 1 times [2020-10-11 18:42:46,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:42:46,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9406806] [2020-10-11 18:42:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:42:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:42:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:42:46,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9406806] [2020-10-11 18:42:46,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:42:46,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:42:46,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963444985] [2020-10-11 18:42:46,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:42:46,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:42:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:42:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:42:46,311 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2020-10-11 18:42:46,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 75 transitions, 324 flow. Second operand 7 states. [2020-10-11 18:42:46,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:42:46,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2020-10-11 18:42:46,313 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:42:46,402 INFO L129 PetriNetUnfolder]: 27/163 cut-off events. [2020-10-11 18:42:46,402 INFO L130 PetriNetUnfolder]: For 161/184 co-relation queries the response was YES. [2020-10-11 18:42:46,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 163 events. 27/163 cut-off events. For 161/184 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 585 event pairs, 0 based on Foata normal form. 1/156 useless extension candidates. Maximal degree in co-relation 374. Up to 30 conditions per place. [2020-10-11 18:42:46,403 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2020-10-11 18:42:46,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 74 transitions, 342 flow [2020-10-11 18:42:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:42:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:42:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2020-10-11 18:42:46,406 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.872822299651568 [2020-10-11 18:42:46,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2020-10-11 18:42:46,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2020-10-11 18:42:46,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:42:46,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2020-10-11 18:42:46,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:42:46,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:42:46,409 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:42:46,410 INFO L185 Difference]: Start difference. First operand has 104 places, 75 transitions, 324 flow. Second operand 7 states and 501 transitions. [2020-10-11 18:42:46,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 74 transitions, 342 flow [2020-10-11 18:42:46,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 74 transitions, 222 flow, removed 28 selfloop flow, removed 18 redundant places. [2020-10-11 18:42:46,413 INFO L241 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2020-10-11 18:42:46,413 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2020-10-11 18:42:46,413 INFO L341 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2020-10-11 18:42:46,413 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2020-10-11 18:42:46,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:42:46,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:42:46,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:42:46 BasicIcfg [2020-10-11 18:42:46,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:42:46,423 INFO L168 Benchmark]: Toolchain (without parser) took 7070.98 ms. Allocated memory was 249.6 MB in the beginning and 429.4 MB in the end (delta: 179.8 MB). Free memory was 204.7 MB in the beginning and 204.2 MB in the end (delta: 467.1 kB). Peak memory consumption was 180.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,424 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.26 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.7 MB in the beginning and 262.2 MB in the end (delta: -57.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.02 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 259.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,426 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 308.8 MB. Free memory was 259.7 MB in the beginning and 258.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,427 INFO L168 Benchmark]: RCFGBuilder took 514.39 ms. Allocated memory is still 308.8 MB. Free memory was 258.0 MB in the beginning and 233.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,428 INFO L168 Benchmark]: TraceAbstraction took 5706.96 ms. Allocated memory was 308.8 MB in the beginning and 429.4 MB in the end (delta: 120.6 MB). Free memory was 232.7 MB in the beginning and 204.2 MB in the end (delta: 28.5 MB). Peak memory consumption was 149.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:42:46,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 768.26 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.7 MB in the beginning and 262.2 MB in the end (delta: -57.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.02 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 259.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 308.8 MB. Free memory was 259.7 MB in the beginning and 258.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 514.39 ms. Allocated memory is still 308.8 MB. Free memory was 258.0 MB in the beginning and 233.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5706.96 ms. Allocated memory was 308.8 MB in the beginning and 429.4 MB in the end (delta: 120.6 MB). Free memory was 232.7 MB in the beginning and 204.2 MB in the end (delta: 28.5 MB). Peak memory consumption was 149.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 305 SDslu, 661 SDs, 0 SdLazy, 795 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 487 NumberOfCodeBlocks, 487 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 64953 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...