/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:11:11,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:11:11,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:11:11,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:11:11,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:11:11,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:11:11,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:11:11,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:11:11,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:11:11,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:11:11,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:11:11,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:11:11,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:11:11,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:11:11,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:11:11,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:11:11,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:11:11,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:11:11,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:11:11,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:11:11,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:11:11,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:11:11,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:11:11,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:11:11,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:11:11,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:11:11,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:11:11,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:11:11,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:11:11,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:11:11,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:11:11,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:11:11,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:11:11,570 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:11:11,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:11:11,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:11:11,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:11:11,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:11:11,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:11:11,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:11:11,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:11:11,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:11:11,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:11:11,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:11:11,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:11:11,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:11:11,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:11:11,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:11:11,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:11:11,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:11:11,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:11:11,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:11:11,926 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:11:11,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-10 21:11:11,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7e0b113/2639e3cd389f45c483d2fc746250ec27/FLAG35c4ccb83 [2021-06-10 21:11:12,528 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:11:12,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-10 21:11:12,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7e0b113/2639e3cd389f45c483d2fc746250ec27/FLAG35c4ccb83 [2021-06-10 21:11:12,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7e0b113/2639e3cd389f45c483d2fc746250ec27 [2021-06-10 21:11:12,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:11:12,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:11:12,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:11:12,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:11:12,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:11:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:11:12" (1/1) ... [2021-06-10 21:11:12,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e760bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:12, skipping insertion in model container [2021-06-10 21:11:12,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:11:12" (1/1) ... [2021-06-10 21:11:12,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:11:12,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:11:13,103 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/safe008_tso.oepc.i[950,963] [2021-06-10 21:11:13,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:11:13,294 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:11:13,305 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/safe008_tso.oepc.i[950,963] [2021-06-10 21:11:13,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:11:13,415 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:11:13,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13 WrapperNode [2021-06-10 21:11:13,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:11:13,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:11:13,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:11:13,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:11:13,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:11:13,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:11:13,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:11:13,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:11:13,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (1/1) ... [2021-06-10 21:11:13,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:11:13,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:11:13,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:11:13,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:11:13,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (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 [2021-06-10 21:11:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:11:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:11:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:11:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:11:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:11:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:11:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:11:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:11:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:11:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:11:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:11:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:11:13,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:11:13,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:11:13,587 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:11:13,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:11:13,906 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:11:13,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:11:13 BoogieIcfgContainer [2021-06-10 21:11:13,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:11:13,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:11:13,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:11:13,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:11:13,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:11:12" (1/3) ... [2021-06-10 21:11:13,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b29f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:11:13, skipping insertion in model container [2021-06-10 21:11:13,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:11:13" (2/3) ... [2021-06-10 21:11:13,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b29f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:11:13, skipping insertion in model container [2021-06-10 21:11:13,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:11:13" (3/3) ... [2021-06-10 21:11:13,917 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-06-10 21:11:13,922 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:11:13,926 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:11:13,927 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:11:13,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,968 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,968 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,972 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,972 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,976 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,976 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,983 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,984 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,990 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:11:13,991 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:11:14,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:11:14,038 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:11:14,039 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:11:14,039 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:11:14,039 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:11:14,039 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:11:14,039 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:11:14,039 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:11:14,039 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:11:14,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:11:14,105 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:11:14,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:11:14,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:11:14,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:11:14,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:11:14,117 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:11:14,127 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:11:14,131 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:11:14,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:11:14,156 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:11:14,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:11:14,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:11:14,160 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:11:14,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:14,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:14,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:14,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:14,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:14,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:14,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:14,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:14,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:14,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:14,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:14,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:14,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:14,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:14,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:15,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:15,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:15,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:15,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:11:15,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:11:15,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,698 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:11:15,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:11:15,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:15,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:15,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:15,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:16,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:16,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:16,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:16,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:16,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:16,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:16,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:16,293 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:11:16,510 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:11:16,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:16,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:11:16,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:16,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:16,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:11:16,599 INFO L163 LiptonReduction]: Checked pairs total: 1712 [2021-06-10 21:11:16,599 INFO L165 LiptonReduction]: Total number of compositions: 44 [2021-06-10 21:11:16,602 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2486 [2021-06-10 21:11:16,610 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-10 21:11:16,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:11:16,610 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:16,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:16,611 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:16,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1536184128, now seen corresponding path program 1 times [2021-06-10 21:11:16,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:16,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752047785] [2021-06-10 21:11:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:16,858 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:11:16,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:16,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752047785] [2021-06-10 21:11:16,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:16,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:11:16,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822916859] [2021-06-10 21:11:16,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:11:16,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:11:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:11:16,896 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:11:16,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2021-06-10 21:11:16,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:16,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:11:16,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:16,940 INFO L129 PetriNetUnfolder]: 23/90 cut-off events. [2021-06-10 21:11:16,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:11:16,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 90 events. 23/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 382 event pairs, 11 based on Foata normal form. 5/91 useless extension candidates. Maximal degree in co-relation 143. Up to 44 conditions per place. [2021-06-10 21:11:16,943 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 4 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-06-10 21:11:16,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 67 flow [2021-06-10 21:11:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:11:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:11:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2021-06-10 21:11:16,961 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2021-06-10 21:11:16,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2021-06-10 21:11:16,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2021-06-10 21:11:16,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:16,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2021-06-10 21:11:16,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2021-06-10 21:11:16,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:11:16,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:11:16,987 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2021-06-10 21:11:16,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 67 flow [2021-06-10 21:11:16,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:11:16,991 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2021-06-10 21:11:16,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-06-10 21:11:16,993 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-06-10 21:11:16,994 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2021-06-10 21:11:16,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2021-06-10 21:11:16,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:16,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:16,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:11:16,995 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash 146528066, now seen corresponding path program 1 times [2021-06-10 21:11:16,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:16,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386660932] [2021-06-10 21:11:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386660932] [2021-06-10 21:11:17,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:11:17,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159745463] [2021-06-10 21:11:17,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:11:17,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:11:17,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:11:17,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 119 [2021-06-10 21:11:17,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-06-10 21:11:17,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 119 [2021-06-10 21:11:17,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,065 INFO L129 PetriNetUnfolder]: 14/65 cut-off events. [2021-06-10 21:11:17,065 INFO L130 PetriNetUnfolder]: For 17/25 co-relation queries the response was YES. [2021-06-10 21:11:17,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 65 events. 14/65 cut-off events. For 17/25 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 225 event pairs, 5 based on Foata normal form. 3/65 useless extension candidates. Maximal degree in co-relation 124. Up to 31 conditions per place. [2021-06-10 21:11:17,066 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 1 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-06-10 21:11:17,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 77 flow [2021-06-10 21:11:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:11:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:11:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-06-10 21:11:17,068 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8683473389355743 [2021-06-10 21:11:17,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-06-10 21:11:17,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-06-10 21:11:17,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-06-10 21:11:17,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2021-06-10 21:11:17,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:11:17,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:11:17,071 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 3 states and 310 transitions. [2021-06-10 21:11:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 77 flow [2021-06-10 21:11:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:11:17,072 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 75 flow [2021-06-10 21:11:17,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-06-10 21:11:17,073 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-06-10 21:11:17,073 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 75 flow [2021-06-10 21:11:17,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-06-10 21:11:17,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:11:17,073 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash -381991717, now seen corresponding path program 1 times [2021-06-10 21:11:17,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797980941] [2021-06-10 21:11:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797980941] [2021-06-10 21:11:17,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:11:17,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275072765] [2021-06-10 21:11:17,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:11:17,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:11:17,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:11:17,147 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 119 [2021-06-10 21:11:17,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-06-10 21:11:17,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 119 [2021-06-10 21:11:17,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,180 INFO L129 PetriNetUnfolder]: 11/72 cut-off events. [2021-06-10 21:11:17,180 INFO L130 PetriNetUnfolder]: For 58/99 co-relation queries the response was YES. [2021-06-10 21:11:17,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 72 events. 11/72 cut-off events. For 58/99 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 315 event pairs, 4 based on Foata normal form. 9/79 useless extension candidates. Maximal degree in co-relation 151. Up to 28 conditions per place. [2021-06-10 21:11:17,181 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 1 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-06-10 21:11:17,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 103 flow [2021-06-10 21:11:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:11:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:11:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2021-06-10 21:11:17,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2021-06-10 21:11:17,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2021-06-10 21:11:17,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2021-06-10 21:11:17,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2021-06-10 21:11:17,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-06-10 21:11:17,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:11:17,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:11:17,186 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 75 flow. Second operand 4 states and 399 transitions. [2021-06-10 21:11:17,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 103 flow [2021-06-10 21:11:17,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:11:17,188 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 86 flow [2021-06-10 21:11:17,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2021-06-10 21:11:17,188 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-06-10 21:11:17,188 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 86 flow [2021-06-10 21:11:17,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-06-10 21:11:17,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:11:17,189 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1943804353, now seen corresponding path program 1 times [2021-06-10 21:11:17,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576480469] [2021-06-10 21:11:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,227 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:11:17,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576480469] [2021-06-10 21:11:17,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:11:17,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130833669] [2021-06-10 21:11:17,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:11:17,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:11:17,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:11:17,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:11:17,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-06-10 21:11:17,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:11:17,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,253 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-06-10 21:11:17,253 INFO L130 PetriNetUnfolder]: For 37/55 co-relation queries the response was YES. [2021-06-10 21:11:17,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 35 events. 3/35 cut-off events. For 37/55 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 3/38 useless extension candidates. Maximal degree in co-relation 91. Up to 13 conditions per place. [2021-06-10 21:11:17,253 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-06-10 21:11:17,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 22 transitions, 120 flow [2021-06-10 21:11:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:11:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:11:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2021-06-10 21:11:17,257 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8046218487394958 [2021-06-10 21:11:17,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2021-06-10 21:11:17,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2021-06-10 21:11:17,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2021-06-10 21:11:17,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-06-10 21:11:17,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:11:17,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:11:17,260 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 86 flow. Second operand 4 states and 383 transitions. [2021-06-10 21:11:17,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 22 transitions, 120 flow [2021-06-10 21:11:17,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 104 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 21:11:17,261 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 98 flow [2021-06-10 21:11:17,262 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2021-06-10 21:11:17,262 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-06-10 21:11:17,262 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 98 flow [2021-06-10 21:11:17,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-06-10 21:11:17,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:11:17,263 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2135982538, now seen corresponding path program 1 times [2021-06-10 21:11:17,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648003180] [2021-06-10 21:11:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,307 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:11:17,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648003180] [2021-06-10 21:11:17,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:11:17,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120774310] [2021-06-10 21:11:17,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:11:17,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:11:17,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:11:17,316 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-06-10 21:11:17,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-06-10 21:11:17,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-06-10 21:11:17,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,359 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2021-06-10 21:11:17,359 INFO L130 PetriNetUnfolder]: For 63/72 co-relation queries the response was YES. [2021-06-10 21:11:17,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 56 events. 10/56 cut-off events. For 63/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 7/63 useless extension candidates. Maximal degree in co-relation 154. Up to 17 conditions per place. [2021-06-10 21:11:17,362 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 6 selfloop transitions, 11 changer transitions 1/28 dead transitions. [2021-06-10 21:11:17,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 178 flow [2021-06-10 21:11:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:11:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:11:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-06-10 21:11:17,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7932773109243697 [2021-06-10 21:11:17,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-06-10 21:11:17,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-06-10 21:11:17,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-06-10 21:11:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2021-06-10 21:11:17,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,367 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 98 flow. Second operand 5 states and 472 transitions. [2021-06-10 21:11:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 178 flow [2021-06-10 21:11:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:11:17,370 INFO L241 Difference]: Finished difference. Result has 38 places, 26 transitions, 165 flow [2021-06-10 21:11:17,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2021-06-10 21:11:17,371 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-10 21:11:17,371 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 165 flow [2021-06-10 21:11:17,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-06-10 21:11:17,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:11:17,371 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2136577738, now seen corresponding path program 2 times [2021-06-10 21:11:17,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231823369] [2021-06-10 21:11:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,431 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:11:17,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:11:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231823369] [2021-06-10 21:11:17,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:11:17,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72617982] [2021-06-10 21:11:17,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:11:17,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:11:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:11:17,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-06-10 21:11:17,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2021-06-10 21:11:17,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-06-10 21:11:17,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,477 INFO L129 PetriNetUnfolder]: 5/49 cut-off events. [2021-06-10 21:11:17,478 INFO L130 PetriNetUnfolder]: For 109/123 co-relation queries the response was YES. [2021-06-10 21:11:17,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 49 events. 5/49 cut-off events. For 109/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 7/56 useless extension candidates. Maximal degree in co-relation 163. Up to 17 conditions per place. [2021-06-10 21:11:17,478 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 3 selfloop transitions, 4 changer transitions 10/27 dead transitions. [2021-06-10 21:11:17,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 208 flow [2021-06-10 21:11:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:11:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:11:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2021-06-10 21:11:17,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848739495798319 [2021-06-10 21:11:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2021-06-10 21:11:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2021-06-10 21:11:17,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2021-06-10 21:11:17,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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) [2021-06-10 21:11:17,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,484 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,484 INFO L185 Difference]: Start difference. First operand has 38 places, 26 transitions, 165 flow. Second operand 5 states and 467 transitions. [2021-06-10 21:11:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 208 flow [2021-06-10 21:11:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 27 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:11:17,490 INFO L241 Difference]: Finished difference. Result has 44 places, 17 transitions, 103 flow [2021-06-10 21:11:17,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=44, PETRI_TRANSITIONS=17} [2021-06-10 21:11:17,491 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-06-10 21:11:17,491 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 17 transitions, 103 flow [2021-06-10 21:11:17,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2021-06-10 21:11:17,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:11:17,491 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1139099214, now seen corresponding path program 1 times [2021-06-10 21:11:17,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129780978] [2021-06-10 21:11:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:11:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129780978] [2021-06-10 21:11:17,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:11:17,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541371895] [2021-06-10 21:11:17,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:11:17,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:11:17,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:11:17,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:11:17,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 17 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2021-06-10 21:11:17,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:11:17,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,572 INFO L129 PetriNetUnfolder]: 23/66 cut-off events. [2021-06-10 21:11:17,572 INFO L130 PetriNetUnfolder]: For 184/199 co-relation queries the response was YES. [2021-06-10 21:11:17,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 66 events. 23/66 cut-off events. For 184/199 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 208 event pairs, 9 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 173. Up to 39 conditions per place. [2021-06-10 21:11:17,573 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2021-06-10 21:11:17,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 27 transitions, 155 flow [2021-06-10 21:11:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:11:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:11:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2021-06-10 21:11:17,575 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2021-06-10 21:11:17,575 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2021-06-10 21:11:17,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2021-06-10 21:11:17,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2021-06-10 21:11:17,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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) [2021-06-10 21:11:17,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,578 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:11:17,578 INFO L185 Difference]: Start difference. First operand has 44 places, 17 transitions, 103 flow. Second operand 5 states and 483 transitions. [2021-06-10 21:11:17,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 27 transitions, 155 flow [2021-06-10 21:11:17,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 108 flow, removed 10 selfloop flow, removed 13 redundant places. [2021-06-10 21:11:17,580 INFO L241 Difference]: Finished difference. Result has 38 places, 19 transitions, 87 flow [2021-06-10 21:11:17,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2021-06-10 21:11:17,580 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-10 21:11:17,581 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 87 flow [2021-06-10 21:11:17,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2021-06-10 21:11:17,581 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:11:17,581 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1785425601, now seen corresponding path program 1 times [2021-06-10 21:11:17,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378894391] [2021-06-10 21:11:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:11:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378894391] [2021-06-10 21:11:17,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:11:17,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498463756] [2021-06-10 21:11:17,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:11:17,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:11:17,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:11:17,623 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:11:17,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-06-10 21:11:17,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:11:17,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,663 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-06-10 21:11:17,663 INFO L130 PetriNetUnfolder]: For 84/127 co-relation queries the response was YES. [2021-06-10 21:11:17,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 40 events. 9/40 cut-off events. For 84/127 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 88 event pairs, 1 based on Foata normal form. 10/48 useless extension candidates. Maximal degree in co-relation 129. Up to 27 conditions per place. [2021-06-10 21:11:17,664 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 3 selfloop transitions, 5 changer transitions 10/29 dead transitions. [2021-06-10 21:11:17,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 181 flow [2021-06-10 21:11:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:11:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:11:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2021-06-10 21:11:17,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2021-06-10 21:11:17,666 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2021-06-10 21:11:17,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2021-06-10 21:11:17,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2021-06-10 21:11:17,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 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) [2021-06-10 21:11:17,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-06-10 21:11:17,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2021-06-10 21:11:17,669 INFO L185 Difference]: Start difference. First operand has 38 places, 19 transitions, 87 flow. Second operand 6 states and 578 transitions. [2021-06-10 21:11:17,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 181 flow [2021-06-10 21:11:17,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-10 21:11:17,672 INFO L241 Difference]: Finished difference. Result has 42 places, 19 transitions, 106 flow [2021-06-10 21:11:17,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=19} [2021-06-10 21:11:17,673 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-06-10 21:11:17,673 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 106 flow [2021-06-10 21:11:17,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-06-10 21:11:17,673 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:11:17,673 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:11:17,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:11:17,674 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:11:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:11:17,674 INFO L82 PathProgramCache]: Analyzing trace with hash -285499791, now seen corresponding path program 1 times [2021-06-10 21:11:17,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:11:17,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005928935] [2021-06-10 21:11:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:11:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:11:17,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:11:17,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:11:17,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:11:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:11:17,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005928935] [2021-06-10 21:11:17,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:11:17,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:11:17,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260513279] [2021-06-10 21:11:17,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:11:17,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:11:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:11:17,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:11:17,754 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:11:17,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 19 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2021-06-10 21:11:17,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:11:17,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:11:17,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:11:17,785 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-06-10 21:11:17,785 INFO L130 PetriNetUnfolder]: For 57/79 co-relation queries the response was YES. [2021-06-10 21:11:17,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 20 events. 1/20 cut-off events. For 57/79 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 7/27 useless extension candidates. Maximal degree in co-relation 68. Up to 9 conditions per place. [2021-06-10 21:11:17,787 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-06-10 21:11:17,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 20 transitions, 128 flow [2021-06-10 21:11:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:11:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:11:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 661 transitions. [2021-06-10 21:11:17,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7935174069627852 [2021-06-10 21:11:17,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 661 transitions. [2021-06-10 21:11:17,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 661 transitions. [2021-06-10 21:11:17,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:11:17,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 661 transitions. [2021-06-10 21:11:17,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.42857142857143) internal successors, (661), 7 states have internal predecessors, (661), 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) [2021-06-10 21:11:17,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-06-10 21:11:17,793 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-06-10 21:11:17,793 INFO L185 Difference]: Start difference. First operand has 42 places, 19 transitions, 106 flow. Second operand 7 states and 661 transitions. [2021-06-10 21:11:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 20 transitions, 128 flow [2021-06-10 21:11:17,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 20 transitions, 101 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 21:11:17,794 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-06-10 21:11:17,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-06-10 21:11:17,794 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-06-10 21:11:17,794 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-06-10 21:11:17,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2021-06-10 21:11:17,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:11:17,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:11:17 BasicIcfg [2021-06-10 21:11:17,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:11:17,800 INFO L168 Benchmark]: Toolchain (without parser) took 4958.26 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 325.6 MB in the beginning and 205.0 MB in the end (delta: 120.7 MB). Peak memory consumption was 194.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,801 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory is still 343.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:11:17,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.34 ms. Allocated memory is still 362.8 MB. Free memory was 325.4 MB in the beginning and 325.5 MB in the end (delta: -142.4 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 322.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,804 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 ms. Allocated memory is still 362.8 MB. Free memory was 322.8 MB in the beginning and 321.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,804 INFO L168 Benchmark]: RCFGBuilder took 394.93 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 297.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,805 INFO L168 Benchmark]: TraceAbstraction took 3888.49 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 297.2 MB in the beginning and 205.0 MB in the end (delta: 92.3 MB). Peak memory consumption was 167.8 MB. Max. memory is 16.0 GB. [2021-06-10 21:11:17,809 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 362.8 MB. Free memory is still 343.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 561.34 ms. Allocated memory is still 362.8 MB. Free memory was 325.4 MB in the beginning and 325.5 MB in the end (delta: -142.4 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 322.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.18 ms. Allocated memory is still 362.8 MB. Free memory was 322.8 MB in the beginning and 321.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 394.93 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 297.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3888.49 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 297.2 MB in the beginning and 205.0 MB in the end (delta: 92.3 MB). Peak memory consumption was 167.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2468.9ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1712 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1010, positive: 926, positive conditional: 0, positive unconditional: 926, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 618, positive: 584, positive conditional: 0, positive unconditional: 584, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 618, positive: 584, positive conditional: 0, positive unconditional: 584, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 618, positive: 578, positive conditional: 0, positive unconditional: 578, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1010, positive: 342, positive conditional: 0, positive unconditional: 342, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 618, unknown conditional: 0, unknown unconditional: 618] , Statistics on independence cache: Total cache size (in pairs): 980, Positive cache size: 946, Positive conditional cache size: 0, Positive unconditional cache size: 946, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3759.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 439.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2566.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 24 SDslu, 21 SDs, 0 SdLazy, 113 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 100.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=5, InterpolantAutomatonStates: 42, 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: 18.3ms SsaConstructionTime, 181.5ms SatisfiabilityAnalysisTime, 381.7ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...