/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:33:56,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:33:56,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:33:56,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:33:56,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:33:56,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:33:56,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:33:56,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:33:56,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:33:56,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:33:56,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:33:56,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:33:56,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:33:56,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:33:56,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:33:56,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:33:56,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:33:56,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:33:56,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:33:56,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:33:56,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:33:56,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:33:56,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:33:56,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:33:56,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 02:33:56,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 02:33:56,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 02:33:56,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 02:33:56,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 02:33:56,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 02:33:56,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 02:33:56,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 02:33:56,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 02:33:56,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 02:33:56,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 02:33:56,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 02:33:56,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 02:33:56,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 02:33:56,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:33:56,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:33:56,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:33:56,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:33:56,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:33:56,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:33:56,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:33:56,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:33:56,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:33:56,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:33:56,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:33:56,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:33:56,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:33:56,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:33:56,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:33:56,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:33:56,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:33:56,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:33:56,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:33:56,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:33:56,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:33:56,923 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:33:56,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-11 02:33:56,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6edfbfd7/f0841098df4c404eaa5e4b476fafea2d/FLAG34609bdd0 [2021-03-11 02:33:57,436 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:33:57,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-03-11 02:33:57,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6edfbfd7/f0841098df4c404eaa5e4b476fafea2d/FLAG34609bdd0 [2021-03-11 02:33:57,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6edfbfd7/f0841098df4c404eaa5e4b476fafea2d [2021-03-11 02:33:57,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:33:57,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:33:57,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:33:57,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:33:57,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:33:57,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:33:57" (1/1) ... [2021-03-11 02:33:57,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5119c994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:57, skipping insertion in model container [2021-03-11 02:33:57,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:33:57" (1/1) ... [2021-03-11 02:33:57,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:33:58,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:33:58,164 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-03-11 02:33:58,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:33:58,271 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:33:58,287 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-03-11 02:33:58,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:33:58,390 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:33:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58 WrapperNode [2021-03-11 02:33:58,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:33:58,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:33:58,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:33:58,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:33:58,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:33:58,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:33:58,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:33:58,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:33:58,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (1/1) ... [2021-03-11 02:33:58,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:33:58,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:33:58,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:33:58,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:33:58,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (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 [2021-03-11 02:33:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:33:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:33:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:33:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:33:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:33:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:33:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:33:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:33:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:33:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:33:58,533 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:33:58,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:33:58,873 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:33:58,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:58 BoogieIcfgContainer [2021-03-11 02:33:58,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:33:58,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:33:58,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:33:58,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:33:58,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:33:57" (1/3) ... [2021-03-11 02:33:58,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399be9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:58, skipping insertion in model container [2021-03-11 02:33:58,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:58" (2/3) ... [2021-03-11 02:33:58,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399be9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:58, skipping insertion in model container [2021-03-11 02:33:58,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:58" (3/3) ... [2021-03-11 02:33:58,883 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-03-11 02:33:58,890 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:33:58,894 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:33:58,895 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:33:58,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,941 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,941 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,944 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,944 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,949 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,949 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,954 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,954 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,958 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,958 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:58,963 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:33:58,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:33:59,007 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:33:59,007 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:33:59,007 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:33:59,007 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:33:59,007 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:33:59,008 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:33:59,008 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:33:59,008 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:33:59,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-03-11 02:33:59,073 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-03-11 02:33:59,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:59,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 02:33:59,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-03-11 02:33:59,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-03-11 02:33:59,115 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2021-03-11 02:33:59,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:59,116 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:59,116 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] [2021-03-11 02:33:59,117 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:59,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1438712308, now seen corresponding path program 1 times [2021-03-11 02:33:59,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:59,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896461480] [2021-03-11 02:33:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:59,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:59,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:59,437 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:33:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:33:59,454 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:59,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:59,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:59,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:59,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:59,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:59,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:59,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:59,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896461480] [2021-03-11 02:33:59,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:59,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:33:59,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171765691] [2021-03-11 02:33:59,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:33:59,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:33:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:33:59,526 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:33:59,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 55.285714285714285) internal successors, (387), 7 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:59,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:59,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:33:59,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:59,929 INFO L129 PetriNetUnfolder]: 294/729 cut-off events. [2021-03-11 02:33:59,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:59,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 729 events. 294/729 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4331 event pairs, 22 based on Foata normal form. 33/739 useless extension candidates. Maximal degree in co-relation 1218. Up to 135 conditions per place. [2021-03-11 02:33:59,936 INFO L132 encePairwiseOnDemand]: 61/72 looper letters, 19 selfloop transitions, 6 changer transitions 47/114 dead transitions. [2021-03-11 02:33:59,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 381 flow [2021-03-11 02:33:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:33:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:33:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-03-11 02:33:59,984 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-03-11 02:33:59,984 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-03-11 02:33:59,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-03-11 02:33:59,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:59,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-03-11 02:33:59,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,008 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,010 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 13 states and 780 transitions. [2021-03-11 02:34:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 381 flow [2021-03-11 02:34:00,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:34:00,022 INFO L241 Difference]: Finished difference. Result has 87 places, 60 transitions, 204 flow [2021-03-11 02:34:00,024 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=204, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2021-03-11 02:34:00,024 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2021-03-11 02:34:00,024 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 204 flow [2021-03-11 02:34:00,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.285714285714285) internal successors, (387), 7 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:00,026 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] [2021-03-11 02:34:00,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:34:00,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:00,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1489627627, now seen corresponding path program 1 times [2021-03-11 02:34:00,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:00,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661073607] [2021-03-11 02:34:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:00,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:00,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:00,151 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:00,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:00,163 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:00,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:00,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:00,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:00,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:00,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661073607] [2021-03-11 02:34:00,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:00,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:00,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621859683] [2021-03-11 02:34:00,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:00,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:00,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:34:00,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:00,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:34:00,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:00,476 INFO L129 PetriNetUnfolder]: 163/613 cut-off events. [2021-03-11 02:34:00,477 INFO L130 PetriNetUnfolder]: For 1148/1361 co-relation queries the response was YES. [2021-03-11 02:34:00,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 613 events. 163/613 cut-off events. For 1148/1361 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4128 event pairs, 1 based on Foata normal form. 18/620 useless extension candidates. Maximal degree in co-relation 1722. Up to 109 conditions per place. [2021-03-11 02:34:00,484 INFO L132 encePairwiseOnDemand]: 61/72 looper letters, 20 selfloop transitions, 13 changer transitions 52/127 dead transitions. [2021-03-11 02:34:00,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 127 transitions, 870 flow [2021-03-11 02:34:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 776 transitions. [2021-03-11 02:34:00,487 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-11 02:34:00,487 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 776 transitions. [2021-03-11 02:34:00,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 776 transitions. [2021-03-11 02:34:00,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:00,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 776 transitions. [2021-03-11 02:34:00,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.69230769230769) internal successors, (776), 13 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,492 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,492 INFO L185 Difference]: Start difference. First operand has 87 places, 60 transitions, 204 flow. Second operand 13 states and 776 transitions. [2021-03-11 02:34:00,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 127 transitions, 870 flow [2021-03-11 02:34:00,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 842 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:34:00,502 INFO L241 Difference]: Finished difference. Result has 98 places, 69 transitions, 359 flow [2021-03-11 02:34:00,503 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=359, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2021-03-11 02:34:00,503 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2021-03-11 02:34:00,503 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 359 flow [2021-03-11 02:34:00,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,504 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:00,504 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:00,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:34:00,504 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash -972525866, now seen corresponding path program 1 times [2021-03-11 02:34:00,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:00,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360069385] [2021-03-11 02:34:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:00,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:00,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:00,602 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:00,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:00,612 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:00,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:00,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:00,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:00,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360069385] [2021-03-11 02:34:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:00,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:00,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088107181] [2021-03-11 02:34:00,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:00,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:00,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:00,650 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:34:00,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 69 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:00,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:34:00,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:00,864 INFO L129 PetriNetUnfolder]: 89/362 cut-off events. [2021-03-11 02:34:00,867 INFO L130 PetriNetUnfolder]: For 1586/1895 co-relation queries the response was YES. [2021-03-11 02:34:00,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 362 events. 89/362 cut-off events. For 1586/1895 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1949 event pairs, 7 based on Foata normal form. 14/369 useless extension candidates. Maximal degree in co-relation 1307. Up to 76 conditions per place. [2021-03-11 02:34:00,873 INFO L132 encePairwiseOnDemand]: 61/72 looper letters, 20 selfloop transitions, 17 changer transitions 31/110 dead transitions. [2021-03-11 02:34:00,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 904 flow [2021-03-11 02:34:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 763 transitions. [2021-03-11 02:34:00,880 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8151709401709402 [2021-03-11 02:34:00,880 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 763 transitions. [2021-03-11 02:34:00,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 763 transitions. [2021-03-11 02:34:00,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:00,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 763 transitions. [2021-03-11 02:34:00,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 58.69230769230769) internal successors, (763), 13 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,885 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,885 INFO L185 Difference]: Start difference. First operand has 98 places, 69 transitions, 359 flow. Second operand 13 states and 763 transitions. [2021-03-11 02:34:00,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 904 flow [2021-03-11 02:34:00,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 820 flow, removed 42 selfloop flow, removed 3 redundant places. [2021-03-11 02:34:00,896 INFO L241 Difference]: Finished difference. Result has 109 places, 73 transitions, 459 flow [2021-03-11 02:34:00,896 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=459, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2021-03-11 02:34:00,896 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2021-03-11 02:34:00,896 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 459 flow [2021-03-11 02:34:00,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:00,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:00,897 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] [2021-03-11 02:34:00,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:34:00,897 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash -319700444, now seen corresponding path program 1 times [2021-03-11 02:34:00,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:00,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220357164] [2021-03-11 02:34:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:00,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:00,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:00,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:00,983 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:00,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:00,992 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:00,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:01,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:01,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220357164] [2021-03-11 02:34:01,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:01,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:01,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118981676] [2021-03-11 02:34:01,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:01,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:01,035 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:34:01,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 459 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:01,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:34:01,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:01,238 INFO L129 PetriNetUnfolder]: 62/349 cut-off events. [2021-03-11 02:34:01,238 INFO L130 PetriNetUnfolder]: For 1779/2062 co-relation queries the response was YES. [2021-03-11 02:34:01,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 349 events. 62/349 cut-off events. For 1779/2062 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2034 event pairs, 1 based on Foata normal form. 14/357 useless extension candidates. Maximal degree in co-relation 1284. Up to 60 conditions per place. [2021-03-11 02:34:01,242 INFO L132 encePairwiseOnDemand]: 62/72 looper letters, 23 selfloop transitions, 19 changer transitions 23/107 dead transitions. [2021-03-11 02:34:01,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 954 flow [2021-03-11 02:34:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 753 transitions. [2021-03-11 02:34:01,244 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8044871794871795 [2021-03-11 02:34:01,244 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:01,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,249 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,249 INFO L185 Difference]: Start difference. First operand has 109 places, 73 transitions, 459 flow. Second operand 13 states and 753 transitions. [2021-03-11 02:34:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 954 flow [2021-03-11 02:34:01,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 814 flow, removed 57 selfloop flow, removed 16 redundant places. [2021-03-11 02:34:01,259 INFO L241 Difference]: Finished difference. Result has 108 places, 76 transitions, 542 flow [2021-03-11 02:34:01,259 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=542, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2021-03-11 02:34:01,260 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2021-03-11 02:34:01,260 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 542 flow [2021-03-11 02:34:01,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,260 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:01,260 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] [2021-03-11 02:34:01,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:34:01,261 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1374022315, now seen corresponding path program 1 times [2021-03-11 02:34:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:01,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089992879] [2021-03-11 02:34:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:01,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:01,319 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:01,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:01,329 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:01,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:01,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:01,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089992879] [2021-03-11 02:34:01,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:01,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:01,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585910618] [2021-03-11 02:34:01,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:01,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:01,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:01,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:01,371 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:34:01,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:01,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:34:01,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:01,569 INFO L129 PetriNetUnfolder]: 47/337 cut-off events. [2021-03-11 02:34:01,569 INFO L130 PetriNetUnfolder]: For 1984/2251 co-relation queries the response was YES. [2021-03-11 02:34:01,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 337 events. 47/337 cut-off events. For 1984/2251 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2014 event pairs, 1 based on Foata normal form. 13/346 useless extension candidates. Maximal degree in co-relation 1232. Up to 55 conditions per place. [2021-03-11 02:34:01,574 INFO L132 encePairwiseOnDemand]: 62/72 looper letters, 22 selfloop transitions, 17 changer transitions 24/105 dead transitions. [2021-03-11 02:34:01,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 998 flow [2021-03-11 02:34:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 753 transitions. [2021-03-11 02:34:01,579 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8044871794871795 [2021-03-11 02:34:01,579 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:01,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 753 transitions. [2021-03-11 02:34:01,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,586 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,586 INFO L185 Difference]: Start difference. First operand has 108 places, 76 transitions, 542 flow. Second operand 13 states and 753 transitions. [2021-03-11 02:34:01,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 998 flow [2021-03-11 02:34:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 879 flow, removed 48 selfloop flow, removed 7 redundant places. [2021-03-11 02:34:01,596 INFO L241 Difference]: Finished difference. Result has 114 places, 73 transitions, 522 flow [2021-03-11 02:34:01,596 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=522, PETRI_PLACES=114, PETRI_TRANSITIONS=73} [2021-03-11 02:34:01,596 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2021-03-11 02:34:01,596 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 73 transitions, 522 flow [2021-03-11 02:34:01,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:01,597 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] [2021-03-11 02:34:01,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:34:01,597 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1503380631, now seen corresponding path program 1 times [2021-03-11 02:34:01,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:01,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407236627] [2021-03-11 02:34:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:01,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:01,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:01,670 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:01,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:01,678 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:01,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:01,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:01,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407236627] [2021-03-11 02:34:01,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:01,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:01,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793303489] [2021-03-11 02:34:01,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:01,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:01,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:01,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:01,727 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 72 [2021-03-11 02:34:01,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 73 transitions, 522 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:01,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 72 [2021-03-11 02:34:01,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:01,851 INFO L129 PetriNetUnfolder]: 53/371 cut-off events. [2021-03-11 02:34:01,851 INFO L130 PetriNetUnfolder]: For 2936/3216 co-relation queries the response was YES. [2021-03-11 02:34:01,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 371 events. 53/371 cut-off events. For 2936/3216 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2283 event pairs, 0 based on Foata normal form. 16/384 useless extension candidates. Maximal degree in co-relation 1458. Up to 63 conditions per place. [2021-03-11 02:34:01,855 INFO L132 encePairwiseOnDemand]: 61/72 looper letters, 18 selfloop transitions, 11 changer transitions 31/102 dead transitions. [2021-03-11 02:34:01,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 1044 flow [2021-03-11 02:34:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:34:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:34:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2021-03-11 02:34:01,857 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8211805555555556 [2021-03-11 02:34:01,857 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2021-03-11 02:34:01,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2021-03-11 02:34:01,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:01,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2021-03-11 02:34:01,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.125) internal successors, (473), 8 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,860 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,860 INFO L185 Difference]: Start difference. First operand has 114 places, 73 transitions, 522 flow. Second operand 8 states and 473 transitions. [2021-03-11 02:34:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 1044 flow [2021-03-11 02:34:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 942 flow, removed 38 selfloop flow, removed 10 redundant places. [2021-03-11 02:34:01,870 INFO L241 Difference]: Finished difference. Result has 106 places, 66 transitions, 413 flow [2021-03-11 02:34:01,870 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=106, PETRI_TRANSITIONS=66} [2021-03-11 02:34:01,871 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2021-03-11 02:34:01,871 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 66 transitions, 413 flow [2021-03-11 02:34:01,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:01,871 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] [2021-03-11 02:34:01,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:34:01,872 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1541640599, now seen corresponding path program 2 times [2021-03-11 02:34:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:01,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810649458] [2021-03-11 02:34:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:01,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:01,936 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:01,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:01,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:01,961 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:01,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:01,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:01,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:01,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810649458] [2021-03-11 02:34:01,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:01,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:01,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150660593] [2021-03-11 02:34:01,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:01,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:01,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:01,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:01,975 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 72 [2021-03-11 02:34:01,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 66 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:01,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:01,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 72 [2021-03-11 02:34:01,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:02,206 INFO L129 PetriNetUnfolder]: 378/943 cut-off events. [2021-03-11 02:34:02,206 INFO L130 PetriNetUnfolder]: For 898/940 co-relation queries the response was YES. [2021-03-11 02:34:02,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 943 events. 378/943 cut-off events. For 898/940 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6943 event pairs, 51 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 1959. Up to 276 conditions per place. [2021-03-11 02:34:02,214 INFO L132 encePairwiseOnDemand]: 62/72 looper letters, 15 selfloop transitions, 15 changer transitions 11/96 dead transitions. [2021-03-11 02:34:02,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 96 transitions, 555 flow [2021-03-11 02:34:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 623 transitions. [2021-03-11 02:34:02,216 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8652777777777778 [2021-03-11 02:34:02,216 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 623 transitions. [2021-03-11 02:34:02,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 623 transitions. [2021-03-11 02:34:02,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:02,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 623 transitions. [2021-03-11 02:34:02,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,220 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,220 INFO L185 Difference]: Start difference. First operand has 106 places, 66 transitions, 413 flow. Second operand 10 states and 623 transitions. [2021-03-11 02:34:02,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 96 transitions, 555 flow [2021-03-11 02:34:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 445 flow, removed 25 selfloop flow, removed 16 redundant places. [2021-03-11 02:34:02,228 INFO L241 Difference]: Finished difference. Result has 102 places, 81 transitions, 412 flow [2021-03-11 02:34:02,229 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=412, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2021-03-11 02:34:02,229 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 36 predicate places. [2021-03-11 02:34:02,229 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 412 flow [2021-03-11 02:34:02,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:02,229 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] [2021-03-11 02:34:02,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:34:02,230 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1974863373, now seen corresponding path program 1 times [2021-03-11 02:34:02,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:02,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623890922] [2021-03-11 02:34:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:02,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:02,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:02,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:02,285 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:02,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:02,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:02,313 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:02,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:02,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:02,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623890922] [2021-03-11 02:34:02,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:02,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:02,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004980379] [2021-03-11 02:34:02,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:02,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:02,326 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 72 [2021-03-11 02:34:02,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:02,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 72 [2021-03-11 02:34:02,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:02,563 INFO L129 PetriNetUnfolder]: 260/856 cut-off events. [2021-03-11 02:34:02,564 INFO L130 PetriNetUnfolder]: For 1221/1660 co-relation queries the response was YES. [2021-03-11 02:34:02,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 856 events. 260/856 cut-off events. For 1221/1660 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7030 event pairs, 0 based on Foata normal form. 102/912 useless extension candidates. Maximal degree in co-relation 2489. Up to 207 conditions per place. [2021-03-11 02:34:02,569 INFO L132 encePairwiseOnDemand]: 62/72 looper letters, 13 selfloop transitions, 17 changer transitions 35/116 dead transitions. [2021-03-11 02:34:02,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 702 flow [2021-03-11 02:34:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 807 transitions. [2021-03-11 02:34:02,572 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8621794871794872 [2021-03-11 02:34:02,572 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 807 transitions. [2021-03-11 02:34:02,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 807 transitions. [2021-03-11 02:34:02,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:02,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 807 transitions. [2021-03-11 02:34:02,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.07692307692308) internal successors, (807), 13 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,577 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 72.0) internal successors, (1008), 14 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,577 INFO L185 Difference]: Start difference. First operand has 102 places, 81 transitions, 412 flow. Second operand 13 states and 807 transitions. [2021-03-11 02:34:02,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 702 flow [2021-03-11 02:34:02,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 688 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 02:34:02,582 INFO L241 Difference]: Finished difference. Result has 119 places, 78 transitions, 448 flow [2021-03-11 02:34:02,582 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=448, PETRI_PLACES=119, PETRI_TRANSITIONS=78} [2021-03-11 02:34:02,583 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 53 predicate places. [2021-03-11 02:34:02,583 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 78 transitions, 448 flow [2021-03-11 02:34:02,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,583 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:02,583 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] [2021-03-11 02:34:02,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:34:02,583 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash -457308640, now seen corresponding path program 1 times [2021-03-11 02:34:02,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:02,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124984029] [2021-03-11 02:34:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:02,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:02,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:02,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:02,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:02,621 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:02,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:02,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:02,644 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:02,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:02,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:02,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:02,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124984029] [2021-03-11 02:34:02,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:02,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:02,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919311897] [2021-03-11 02:34:02,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:02,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:02,655 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 72 [2021-03-11 02:34:02,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 78 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 59.125) internal successors, (473), 8 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:02,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 72 [2021-03-11 02:34:02,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:02,869 INFO L129 PetriNetUnfolder]: 35/283 cut-off events. [2021-03-11 02:34:02,869 INFO L130 PetriNetUnfolder]: For 1194/1726 co-relation queries the response was YES. [2021-03-11 02:34:02,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 283 events. 35/283 cut-off events. For 1194/1726 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1897 event pairs, 0 based on Foata normal form. 60/326 useless extension candidates. Maximal degree in co-relation 1032. Up to 73 conditions per place. [2021-03-11 02:34:02,871 INFO L132 encePairwiseOnDemand]: 63/72 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2021-03-11 02:34:02,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 86 transitions, 614 flow [2021-03-11 02:34:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:34:02,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:34:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 910 transitions. [2021-03-11 02:34:02,874 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2021-03-11 02:34:02,874 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 910 transitions. [2021-03-11 02:34:02,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 910 transitions. [2021-03-11 02:34:02,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:02,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 910 transitions. [2021-03-11 02:34:02,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.666666666666664) internal successors, (910), 15 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 72.0) internal successors, (1152), 16 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,880 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 72.0) internal successors, (1152), 16 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,880 INFO L185 Difference]: Start difference. First operand has 119 places, 78 transitions, 448 flow. Second operand 15 states and 910 transitions. [2021-03-11 02:34:02,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 86 transitions, 614 flow [2021-03-11 02:34:02,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 86 transitions, 572 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-11 02:34:02,886 INFO L241 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2021-03-11 02:34:02,886 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2021-03-11 02:34:02,886 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2021-03-11 02:34:02,886 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2021-03-11 02:34:02,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.125) internal successors, (473), 8 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:02,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:34:02,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:34:02 BasicIcfg [2021-03-11 02:34:02,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:34:02,892 INFO L168 Benchmark]: Toolchain (without parser) took 4937.09 ms. Allocated memory was 348.1 MB in the beginning and 429.9 MB in the end (delta: 81.8 MB). Free memory was 311.1 MB in the beginning and 197.6 MB in the end (delta: 113.5 MB). Peak memory consumption was 196.4 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,892 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:34:02,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.19 ms. Allocated memory is still 348.1 MB. Free memory was 310.4 MB in the beginning and 310.5 MB in the end (delta: -139.1 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.84 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,893 INFO L168 Benchmark]: Boogie Preprocessor took 23.57 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 307.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,893 INFO L168 Benchmark]: RCFGBuilder took 409.10 ms. Allocated memory is still 348.1 MB. Free memory was 307.3 MB in the beginning and 284.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,894 INFO L168 Benchmark]: TraceAbstraction took 4014.48 ms. Allocated memory was 348.1 MB in the beginning and 429.9 MB in the end (delta: 81.8 MB). Free memory was 284.2 MB in the beginning and 197.6 MB in the end (delta: 86.7 MB). Peak memory consumption was 170.4 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:02,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 424.19 ms. Allocated memory is still 348.1 MB. Free memory was 310.4 MB in the beginning and 310.5 MB in the end (delta: -139.1 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.84 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.57 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 307.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 409.10 ms. Allocated memory is still 348.1 MB. Free memory was 307.3 MB in the beginning and 284.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4014.48 ms. Allocated memory was 348.1 MB in the beginning and 429.9 MB in the end (delta: 81.8 MB). Free memory was 284.2 MB in the beginning and 197.6 MB in the end (delta: 86.7 MB). Peak memory consumption was 170.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3884.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2393.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 159 SDtfs, 334 SDslu, 549 SDs, 0 SdLazy, 452 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 330.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1256.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=542occurred in iteration=4, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.9ms SsaConstructionTime, 196.4ms SatisfiabilityAnalysisTime, 949.9ms InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 1561 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...