/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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:35:31,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:35:31,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:35:31,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:35:31,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:35:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:35:31,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:35:31,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:35:31,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:35:31,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:35:31,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:35:31,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:35:31,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:35:31,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:35:31,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:35:31,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:35:31,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:35:31,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:35:31,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:35:31,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:35:31,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:35:31,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:35:31,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:35:31,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:35:31,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:35:31,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:35:31,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:35:31,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:35:31,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:35:31,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:35:31,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:35:31,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:35:31,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:35:31,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:35:31,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:35:31,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:35:31,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:35:31,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:35:31,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:35:31,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:35:31,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:35:31,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:35:31,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:35:31,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:35:31,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:35:31,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:35:31,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:35:31,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:35:31,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:35:31,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:35:31,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:35:31,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:35:31,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:35:31,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:35:31,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:35:31,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:35:31,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:35:31,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:35:31,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:35:31,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:35:31,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:35:31,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:35:31,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:35:31,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:35:31,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:35:31,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:35:31,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:35:31,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:35:31,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:35:31,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:35:31,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:35:31,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:35:31,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-11 18:35:31,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d032d3753/6691ea24b700479eb65c8e4ac48bf023/FLAG303a0f6b8 [2020-10-11 18:35:32,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:35:32,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-11 18:35:32,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d032d3753/6691ea24b700479eb65c8e4ac48bf023/FLAG303a0f6b8 [2020-10-11 18:35:32,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d032d3753/6691ea24b700479eb65c8e4ac48bf023 [2020-10-11 18:35:32,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:35:32,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:35:32,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:35:32,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:35:32,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:35:32,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:35:32" (1/1) ... [2020-10-11 18:35:32,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b614791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:32, skipping insertion in model container [2020-10-11 18:35:32,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:35:32" (1/1) ... [2020-10-11 18:35:32,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:35:32,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:35:33,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:35:33,507 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:35:33,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:35:33,657 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:35:33,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33 WrapperNode [2020-10-11 18:35:33,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:35:33,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:35:33,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:35:33,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:35:33,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:35:33,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:35:33,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:35:33,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:35:33,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... [2020-10-11 18:35:33,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:35:33,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:35:33,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:35:33,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:35:33,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:35:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:35:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:35:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:35:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:35:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:35:33,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:35:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:35:33,804 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:35:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:35:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:35:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:35:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:35:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:35:33,807 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:35:34,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:35:34,170 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:35:34,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:35:34 BoogieIcfgContainer [2020-10-11 18:35:34,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:35:34,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:35:34,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:35:34,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:35:34,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:35:32" (1/3) ... [2020-10-11 18:35:34,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a8e371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:35:34, skipping insertion in model container [2020-10-11 18:35:34,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:35:33" (2/3) ... [2020-10-11 18:35:34,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a8e371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:35:34, skipping insertion in model container [2020-10-11 18:35:34,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:35:34" (3/3) ... [2020-10-11 18:35:34,182 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-10-11 18:35:34,192 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:35:34,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:35:34,200 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:35:34,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,244 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:35:34,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:35:34,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:35:34,294 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:35:34,294 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:35:34,294 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:35:34,294 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:35:34,295 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:35:34,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:35:34,295 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:35:34,310 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:35:34,362 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:35:34,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:34,370 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:35:34,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:35:34,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:35:34,396 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:35:34,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:34,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:34,397 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:35:34,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash 853459722, now seen corresponding path program 1 times [2020-10-11 18:35:34,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:34,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186970160] [2020-10-11 18:35:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:34,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186970160] [2020-10-11 18:35:34,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:34,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:34,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77622296] [2020-10-11 18:35:34,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:34,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:34,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:35,079 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:35:35,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:35:35,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:35,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:35:35,083 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:35,256 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:35:35,256 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:35:35,257 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-11 18:35:35,259 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-11 18:35:35,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-11 18:35:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:35:35,279 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-11 18:35:35,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:35:35,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:35:35,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:35,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:35:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:35,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:35,303 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:35,305 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:35:35,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-11 18:35:35,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:35:35,316 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:35:35,319 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:35:35,320 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:35:35,320 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:35:35,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:35,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:35,321 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] [2020-10-11 18:35:35,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:35:35,321 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:35,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1636534603, now seen corresponding path program 1 times [2020-10-11 18:35:35,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:35,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286815566] [2020-10-11 18:35:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:35,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286815566] [2020-10-11 18:35:35,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:35,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:35,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210549583] [2020-10-11 18:35:35,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:35,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:35,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:35,683 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:35:35,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 6 states. [2020-10-11 18:35:35,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:35,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:35:35,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:35,828 INFO L129 PetriNetUnfolder]: 24/133 cut-off events. [2020-10-11 18:35:35,828 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2020-10-11 18:35:35,830 INFO L80 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 133 events. 24/133 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 463 event pairs, 5 based on Foata normal form. 4/135 useless extension candidates. Maximal degree in co-relation 221. Up to 31 conditions per place. [2020-10-11 18:35:35,832 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:35:35,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 252 flow [2020-10-11 18:35:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2020-10-11 18:35:35,836 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8921095008051529 [2020-10-11 18:35:35,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2020-10-11 18:35:35,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2020-10-11 18:35:35,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:35,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2020-10-11 18:35:35,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:35,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:35,842 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:35,842 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 9 states and 554 transitions. [2020-10-11 18:35:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 252 flow [2020-10-11 18:35:35,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 220 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:35:35,847 INFO L241 Difference]: Finished difference. Result has 76 places, 55 transitions, 159 flow [2020-10-11 18:35:35,847 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2020-10-11 18:35:35,848 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:35:35,849 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 159 flow [2020-10-11 18:35:35,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:35,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:35,849 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:35:35,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:35:35,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:35,850 INFO L82 PathProgramCache]: Analyzing trace with hash -338078068, now seen corresponding path program 1 times [2020-10-11 18:35:35,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:35,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961563106] [2020-10-11 18:35:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:35,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961563106] [2020-10-11 18:35:35,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:35,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:35,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82811776] [2020-10-11 18:35:35,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:35,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:35,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:35,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:36,126 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:35:36,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 159 flow. Second operand 6 states. [2020-10-11 18:35:36,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:36,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:35:36,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:36,269 INFO L129 PetriNetUnfolder]: 54/218 cut-off events. [2020-10-11 18:35:36,269 INFO L130 PetriNetUnfolder]: For 222/226 co-relation queries the response was YES. [2020-10-11 18:35:36,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 218 events. 54/218 cut-off events. For 222/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 964 event pairs, 24 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 477. Up to 61 conditions per place. [2020-10-11 18:35:36,274 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2020-10-11 18:35:36,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 281 flow [2020-10-11 18:35:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2020-10-11 18:35:36,277 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8921095008051529 [2020-10-11 18:35:36,277 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2020-10-11 18:35:36,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2020-10-11 18:35:36,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:36,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2020-10-11 18:35:36,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:36,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:36,281 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:36,281 INFO L185 Difference]: Start difference. First operand has 76 places, 55 transitions, 159 flow. Second operand 9 states and 554 transitions. [2020-10-11 18:35:36,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 281 flow [2020-10-11 18:35:36,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 264 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:35:36,287 INFO L241 Difference]: Finished difference. Result has 81 places, 57 transitions, 193 flow [2020-10-11 18:35:36,287 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=193, PETRI_PLACES=81, PETRI_TRANSITIONS=57} [2020-10-11 18:35:36,287 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2020-10-11 18:35:36,288 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 193 flow [2020-10-11 18:35:36,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:36,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:36,288 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] [2020-10-11 18:35:36,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:35:36,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1451965420, now seen corresponding path program 1 times [2020-10-11 18:35:36,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307328846] [2020-10-11 18:35:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:36,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307328846] [2020-10-11 18:35:36,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:36,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:35:36,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545648293] [2020-10-11 18:35:36,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:35:36,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:35:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:35:36,692 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:35:36,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 57 transitions, 193 flow. Second operand 7 states. [2020-10-11 18:35:36,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:36,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:35:36,693 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:36,859 INFO L129 PetriNetUnfolder]: 74/253 cut-off events. [2020-10-11 18:35:36,859 INFO L130 PetriNetUnfolder]: For 657/710 co-relation queries the response was YES. [2020-10-11 18:35:36,862 INFO L80 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 253 events. 74/253 cut-off events. For 657/710 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1158 event pairs, 28 based on Foata normal form. 12/252 useless extension candidates. Maximal degree in co-relation 764. Up to 58 conditions per place. [2020-10-11 18:35:36,863 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 7 selfloop transitions, 4 changer transitions 11/69 dead transitions. [2020-10-11 18:35:36,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 69 transitions, 298 flow [2020-10-11 18:35:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:35:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:35:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-11 18:35:36,866 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-11 18:35:36,866 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-11 18:35:36,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-11 18:35:36,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:36,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-11 18:35:36,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:35:36,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:35:36,870 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:35:36,870 INFO L185 Difference]: Start difference. First operand has 81 places, 57 transitions, 193 flow. Second operand 10 states and 594 transitions. [2020-10-11 18:35:36,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 69 transitions, 298 flow [2020-10-11 18:35:36,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 69 transitions, 279 flow, removed 8 selfloop flow, removed 4 redundant places. [2020-10-11 18:35:36,877 INFO L241 Difference]: Finished difference. Result has 88 places, 58 transitions, 217 flow [2020-10-11 18:35:36,877 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=217, PETRI_PLACES=88, PETRI_TRANSITIONS=58} [2020-10-11 18:35:36,877 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2020-10-11 18:35:36,877 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 58 transitions, 217 flow [2020-10-11 18:35:36,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:35:36,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:36,878 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 18:35:36,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:35:36,878 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash -210827592, now seen corresponding path program 1 times [2020-10-11 18:35:36,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:36,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712857803] [2020-10-11 18:35:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:36,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712857803] [2020-10-11 18:35:36,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:36,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:36,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714567621] [2020-10-11 18:35:36,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:36,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:36,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:36,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:37,113 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:35:37,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 58 transitions, 217 flow. Second operand 6 states. [2020-10-11 18:35:37,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:37,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:35:37,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:37,258 INFO L129 PetriNetUnfolder]: 26/209 cut-off events. [2020-10-11 18:35:37,258 INFO L130 PetriNetUnfolder]: For 612/691 co-relation queries the response was YES. [2020-10-11 18:35:37,261 INFO L80 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 209 events. 26/209 cut-off events. For 612/691 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 982 event pairs, 6 based on Foata normal form. 5/213 useless extension candidates. Maximal degree in co-relation 587. Up to 31 conditions per place. [2020-10-11 18:35:37,262 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 12 selfloop transitions, 3 changer transitions 10/72 dead transitions. [2020-10-11 18:35:37,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 72 transitions, 385 flow [2020-10-11 18:35:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:35:37,265 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:35:37,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:35:37,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:35:37,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:37,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:35:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:37,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:37,269 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:37,269 INFO L185 Difference]: Start difference. First operand has 88 places, 58 transitions, 217 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:35:37,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 72 transitions, 385 flow [2020-10-11 18:35:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 72 transitions, 329 flow, removed 26 selfloop flow, removed 8 redundant places. [2020-10-11 18:35:37,278 INFO L241 Difference]: Finished difference. Result has 89 places, 58 transitions, 218 flow [2020-10-11 18:35:37,278 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2020-10-11 18:35:37,279 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2020-10-11 18:35:37,279 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 218 flow [2020-10-11 18:35:37,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:37,279 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:37,279 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:35:37,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:35:37,280 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash 927636071, now seen corresponding path program 1 times [2020-10-11 18:35:37,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:37,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626256325] [2020-10-11 18:35:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:37,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626256325] [2020-10-11 18:35:37,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:37,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:37,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616589373] [2020-10-11 18:35:37,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:37,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:37,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:37,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:37,499 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:35:37,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 218 flow. Second operand 6 states. [2020-10-11 18:35:37,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:37,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:35:37,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:37,811 INFO L129 PetriNetUnfolder]: 459/1100 cut-off events. [2020-10-11 18:35:37,811 INFO L130 PetriNetUnfolder]: For 987/1023 co-relation queries the response was YES. [2020-10-11 18:35:37,820 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1100 events. 459/1100 cut-off events. For 987/1023 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8299 event pairs, 32 based on Foata normal form. 36/1042 useless extension candidates. Maximal degree in co-relation 2362. Up to 380 conditions per place. [2020-10-11 18:35:37,826 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 17 selfloop transitions, 14 changer transitions 4/83 dead transitions. [2020-10-11 18:35:37,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 338 flow [2020-10-11 18:35:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:35:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:35:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:35:37,830 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:35:37,831 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:35:37,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:35:37,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:37,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:35:37,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:35:37,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:35:37,836 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:35:37,836 INFO L185 Difference]: Start difference. First operand has 89 places, 58 transitions, 218 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:35:37,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 338 flow [2020-10-11 18:35:37,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 317 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:35:37,844 INFO L241 Difference]: Finished difference. Result has 89 places, 70 transitions, 297 flow [2020-10-11 18:35:37,845 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2020-10-11 18:35:37,845 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2020-10-11 18:35:37,845 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 297 flow [2020-10-11 18:35:37,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:37,845 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:37,846 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 18:35:37,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:35:37,846 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:37,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1561606694, now seen corresponding path program 1 times [2020-10-11 18:35:37,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:37,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776064983] [2020-10-11 18:35:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:37,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776064983] [2020-10-11 18:35:37,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:37,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:35:37,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905506440] [2020-10-11 18:35:37,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:35:37,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:37,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:35:37,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:35:38,097 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:35:38,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 297 flow. Second operand 7 states. [2020-10-11 18:35:38,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:38,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:35:38,098 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:38,453 INFO L129 PetriNetUnfolder]: 421/1088 cut-off events. [2020-10-11 18:35:38,453 INFO L130 PetriNetUnfolder]: For 2851/3871 co-relation queries the response was YES. [2020-10-11 18:35:38,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 1088 events. 421/1088 cut-off events. For 2851/3871 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8723 event pairs, 7 based on Foata normal form. 151/1154 useless extension candidates. Maximal degree in co-relation 3783. Up to 470 conditions per place. [2020-10-11 18:35:38,464 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 15 selfloop transitions, 27 changer transitions 8/98 dead transitions. [2020-10-11 18:35:38,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 578 flow [2020-10-11 18:35:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 18:35:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 18:35:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 720 transitions. [2020-10-11 18:35:38,468 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:35:38,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 720 transitions. [2020-10-11 18:35:38,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 720 transitions. [2020-10-11 18:35:38,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:38,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 720 transitions. [2020-10-11 18:35:38,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 18:35:38,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 18:35:38,474 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 18:35:38,474 INFO L185 Difference]: Start difference. First operand has 89 places, 70 transitions, 297 flow. Second operand 12 states and 720 transitions. [2020-10-11 18:35:38,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 578 flow [2020-10-11 18:35:38,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 18:35:38,483 INFO L241 Difference]: Finished difference. Result has 104 places, 86 transitions, 508 flow [2020-10-11 18:35:38,484 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=508, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2020-10-11 18:35:38,484 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 40 predicate places. [2020-10-11 18:35:38,484 INFO L481 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 508 flow [2020-10-11 18:35:38,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:35:38,484 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:38,484 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 18:35:38,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:35:38,485 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -533315881, now seen corresponding path program 1 times [2020-10-11 18:35:38,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:38,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777508157] [2020-10-11 18:35:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:38,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777508157] [2020-10-11 18:35:38,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:38,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:35:38,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037513314] [2020-10-11 18:35:38,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:35:38,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:38,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:35:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:35:38,863 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:35:38,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 508 flow. Second operand 8 states. [2020-10-11 18:35:38,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:38,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:35:38,864 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:39,260 INFO L129 PetriNetUnfolder]: 301/954 cut-off events. [2020-10-11 18:35:39,261 INFO L130 PetriNetUnfolder]: For 4612/6150 co-relation queries the response was YES. [2020-10-11 18:35:39,268 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 954 events. 301/954 cut-off events. For 4612/6150 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8321 event pairs, 0 based on Foata normal form. 196/1069 useless extension candidates. Maximal degree in co-relation 4119. Up to 358 conditions per place. [2020-10-11 18:35:39,271 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 4 selfloop transitions, 12 changer transitions 46/105 dead transitions. [2020-10-11 18:35:39,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 105 transitions, 760 flow [2020-10-11 18:35:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 18:35:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-11 18:35:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 887 transitions. [2020-10-11 18:35:39,276 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8570048309178744 [2020-10-11 18:35:39,276 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 887 transitions. [2020-10-11 18:35:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 887 transitions. [2020-10-11 18:35:39,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:39,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 887 transitions. [2020-10-11 18:35:39,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-11 18:35:39,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-11 18:35:39,285 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-11 18:35:39,285 INFO L185 Difference]: Start difference. First operand has 104 places, 86 transitions, 508 flow. Second operand 15 states and 887 transitions. [2020-10-11 18:35:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 105 transitions, 760 flow [2020-10-11 18:35:39,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 655 flow, removed 43 selfloop flow, removed 12 redundant places. [2020-10-11 18:35:39,320 INFO L241 Difference]: Finished difference. Result has 112 places, 59 transitions, 276 flow [2020-10-11 18:35:39,321 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=276, PETRI_PLACES=112, PETRI_TRANSITIONS=59} [2020-10-11 18:35:39,321 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 48 predicate places. [2020-10-11 18:35:39,321 INFO L481 AbstractCegarLoop]: Abstraction has has 112 places, 59 transitions, 276 flow [2020-10-11 18:35:39,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:35:39,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:35:39,321 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 18:35:39,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:35:39,322 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:35:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:35:39,322 INFO L82 PathProgramCache]: Analyzing trace with hash 952458998, now seen corresponding path program 1 times [2020-10-11 18:35:39,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:35:39,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295437584] [2020-10-11 18:35:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:35:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:35:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:35:39,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295437584] [2020-10-11 18:35:39,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:35:39,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:35:39,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307282017] [2020-10-11 18:35:39,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:35:39,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:35:39,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:35:39,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:35:39,551 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:35:39,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 59 transitions, 276 flow. Second operand 6 states. [2020-10-11 18:35:39,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:35:39,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:35:39,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:35:39,610 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2020-10-11 18:35:39,610 INFO L130 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2020-10-11 18:35:39,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 68 events. 5/68 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2020-10-11 18:35:39,611 INFO L132 encePairwiseOnDemand]: 64/69 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-11 18:35:39,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 57 transitions, 288 flow [2020-10-11 18:35:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:35:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:35:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2020-10-11 18:35:39,613 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2020-10-11 18:35:39,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2020-10-11 18:35:39,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2020-10-11 18:35:39,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:35:39,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2020-10-11 18:35:39,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:35:39,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:35:39,617 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:35:39,617 INFO L185 Difference]: Start difference. First operand has 112 places, 59 transitions, 276 flow. Second operand 6 states and 357 transitions. [2020-10-11 18:35:39,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 57 transitions, 288 flow [2020-10-11 18:35:39,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 57 transitions, 162 flow, removed 29 selfloop flow, removed 30 redundant places. [2020-10-11 18:35:39,619 INFO L241 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2020-10-11 18:35:39,619 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2020-10-11 18:35:39,620 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2020-10-11 18:35:39,620 INFO L481 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2020-10-11 18:35:39,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:35:39,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:35:39,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:35:39 BasicIcfg [2020-10-11 18:35:39,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:35:39,629 INFO L168 Benchmark]: Toolchain (without parser) took 6777.24 ms. Allocated memory was 251.7 MB in the beginning and 424.7 MB in the end (delta: 173.0 MB). Free memory was 206.2 MB in the beginning and 242.3 MB in the end (delta: -36.1 MB). Peak memory consumption was 136.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,630 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:35:39,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.26 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.2 MB in the beginning and 268.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 315.1 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,632 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 315.1 MB. Free memory was 266.0 MB in the beginning and 263.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,633 INFO L168 Benchmark]: RCFGBuilder took 435.59 ms. Allocated memory is still 315.1 MB. Free memory was 263.5 MB in the beginning and 241.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,634 INFO L168 Benchmark]: TraceAbstraction took 5452.72 ms. Allocated memory was 315.1 MB in the beginning and 424.7 MB in the end (delta: 109.6 MB). Free memory was 241.6 MB in the beginning and 242.3 MB in the end (delta: -639.7 kB). Peak memory consumption was 108.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:35:39,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 801.26 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.2 MB in the beginning and 268.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 315.1 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 315.1 MB. Free memory was 266.0 MB in the beginning and 263.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 435.59 ms. Allocated memory is still 315.1 MB. Free memory was 263.5 MB in the beginning and 241.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5452.72 ms. Allocated memory was 315.1 MB in the beginning and 424.7 MB in the end (delta: 109.6 MB). Free memory was 241.6 MB in the beginning and 242.3 MB in the end (delta: -639.7 kB). Peak memory consumption was 108.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 225 SDslu, 555 SDs, 0 SdLazy, 583 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=508occurred 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, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 40992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...