/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:24:26,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:24:26,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:24:26,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:24:26,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:24:26,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:24:26,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:24:26,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:24:26,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:24:26,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:24:26,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:24:26,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:24:26,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:24:26,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:24:26,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:24:26,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:24:26,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:24:26,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:24:26,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:24:26,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:24:26,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:24:26,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:24:26,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:24:26,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:24:26,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:24:26,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:24:26,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:24:26,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:24:26,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:24:26,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:24:26,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:24:26,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:24:26,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:24:26,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:24:26,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:24:26,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:24:26,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:24:26,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:24:26,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:24:26,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:24:26,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:24:26,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:24:26,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:24:26,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:24:26,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:24:26,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:24:26,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:24:26,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:24:26,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:24:26,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:24:26,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:24:26,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:24:26,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:24:26,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:24:26,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:24:26,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:24:26,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:24:26,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:24:26,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:24:26,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:24:26,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:24:26,906 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:24:26,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-06-10 12:24:26,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ba8552/1b0dce9c14df4a9ea1a552220cb2023c/FLAG98d6e821d [2021-06-10 12:24:27,411 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:24:27,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-06-10 12:24:27,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ba8552/1b0dce9c14df4a9ea1a552220cb2023c/FLAG98d6e821d [2021-06-10 12:24:27,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68ba8552/1b0dce9c14df4a9ea1a552220cb2023c [2021-06-10 12:24:27,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:24:27,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:24:27,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:24:27,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:24:27,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:24:27,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:24:27" (1/1) ... [2021-06-10 12:24:27,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcc488e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:27, skipping insertion in model container [2021-06-10 12:24:27,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:24:27" (1/1) ... [2021-06-10 12:24:27,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:24:27,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:24:28,097 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/safe005_tso.oepc.i[950,963] [2021-06-10 12:24:28,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:24:28,217 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:24:28,227 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/safe005_tso.oepc.i[950,963] [2021-06-10 12:24:28,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:24:28,296 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:24:28,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28 WrapperNode [2021-06-10 12:24:28,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:24:28,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:24:28,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:24:28,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:24:28,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:24:28,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:24:28,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:24:28,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:24:28,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (1/1) ... [2021-06-10 12:24:28,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:24:28,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:24:28,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:24:28,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:24:28,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (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 12:24:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:24:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:24:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:24:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:24:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:24:28,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:24:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:24:28,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:24:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:24:28,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:24:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:24:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:24:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:24:28,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:24:28,428 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 12:24:28,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:24:28,753 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:24:28,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:24:28 BoogieIcfgContainer [2021-06-10 12:24:28,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:24:28,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:24:28,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:24:28,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:24:28,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:24:27" (1/3) ... [2021-06-10 12:24:28,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3bc587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:24:28, skipping insertion in model container [2021-06-10 12:24:28,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:28" (2/3) ... [2021-06-10 12:24:28,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3bc587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:24:28, skipping insertion in model container [2021-06-10 12:24:28,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:24:28" (3/3) ... [2021-06-10 12:24:28,761 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2021-06-10 12:24:28,765 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:24:28,768 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:24:28,769 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:24:28,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,795 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,796 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,796 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,796 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,801 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,801 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,803 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,803 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,803 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,803 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:28,816 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:24:28,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:24:28,842 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:24:28,842 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:24:28,843 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:24:28,843 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:24:28,843 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:24:28,843 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:24:28,843 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:24:28,843 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:24:28,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:24:28,877 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 12:24:28,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:28,880 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 54 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 12:24:28,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:24:28,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 12:24:28,901 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 12:24:28,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:28,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:28,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:28,902 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-06-10 12:24:28,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723614537] [2021-06-10 12:24:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:29,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:29,102 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:24:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:24:29,114 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:29,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:29,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,184 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 12:24:29,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723614537] [2021-06-10 12:24:29,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:29,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:29,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496110383] [2021-06-10 12:24:29,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:29,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:29,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:29,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:24:29,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:24:29,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:29,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:24:29,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:29,418 INFO L129 PetriNetUnfolder]: 183/464 cut-off events. [2021-06-10 12:24:29,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:29,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 464 events. 183/464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2312 event pairs, 9 based on Foata normal form. 31/475 useless extension candidates. Maximal degree in co-relation 770. Up to 65 conditions per place. [2021-06-10 12:24:29,422 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 17 selfloop transitions, 6 changer transitions 42/109 dead transitions. [2021-06-10 12:24:29,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 357 flow [2021-06-10 12:24:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:24:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:24:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 799 transitions. [2021-06-10 12:24:29,433 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8194871794871795 [2021-06-10 12:24:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 799 transitions. [2021-06-10 12:24:29,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 799 transitions. [2021-06-10 12:24:29,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:29,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 799 transitions. [2021-06-10 12:24:29,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.46153846153846) internal successors, (799), 13 states have internal predecessors, (799), 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 12:24:29,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:29,446 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:29,447 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 799 transitions. [2021-06-10 12:24:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 357 flow [2021-06-10 12:24:29,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:24:29,453 INFO L241 Difference]: Finished difference. Result has 90 places, 62 transitions, 200 flow [2021-06-10 12:24:29,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2021-06-10 12:24:29,454 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-06-10 12:24:29,454 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 200 flow [2021-06-10 12:24:29,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:24:29,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:29,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:29,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:24:29,455 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:29,456 INFO L82 PathProgramCache]: Analyzing trace with hash -702285371, now seen corresponding path program 1 times [2021-06-10 12:24:29,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:29,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289360603] [2021-06-10 12:24:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:29,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:29,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:29,521 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:24:29,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:24:29,534 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:29,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:29,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,570 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 12:24:29,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289360603] [2021-06-10 12:24:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:24:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640317920] [2021-06-10 12:24:29,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:24:29,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:29,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:24:29,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:24:29,574 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:24:29,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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 12:24:29,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:29,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:24:29,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:29,728 INFO L129 PetriNetUnfolder]: 49/268 cut-off events. [2021-06-10 12:24:29,729 INFO L130 PetriNetUnfolder]: For 531/853 co-relation queries the response was YES. [2021-06-10 12:24:29,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 268 events. 49/268 cut-off events. For 531/853 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1339 event pairs, 4 based on Foata normal form. 8/270 useless extension candidates. Maximal degree in co-relation 718. Up to 48 conditions per place. [2021-06-10 12:24:29,731 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 17 selfloop transitions, 10 changer transitions 23/94 dead transitions. [2021-06-10 12:24:29,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 530 flow [2021-06-10 12:24:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:24:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:24:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 489 transitions. [2021-06-10 12:24:29,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.815 [2021-06-10 12:24:29,733 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 489 transitions. [2021-06-10 12:24:29,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 489 transitions. [2021-06-10 12:24:29,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:29,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 489 transitions. [2021-06-10 12:24:29,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 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 12:24:29,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 12:24:29,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 12:24:29,736 INFO L185 Difference]: Start difference. First operand has 90 places, 62 transitions, 200 flow. Second operand 8 states and 489 transitions. [2021-06-10 12:24:29,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 530 flow [2021-06-10 12:24:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 475 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-06-10 12:24:29,741 INFO L241 Difference]: Finished difference. Result has 91 places, 66 transitions, 261 flow [2021-06-10 12:24:29,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2021-06-10 12:24:29,742 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 22 predicate places. [2021-06-10 12:24:29,742 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 261 flow [2021-06-10 12:24:29,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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 12:24:29,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:29,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:29,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:24:29,743 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:29,743 INFO L82 PathProgramCache]: Analyzing trace with hash 576078621, now seen corresponding path program 1 times [2021-06-10 12:24:29,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:29,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904909768] [2021-06-10 12:24:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:29,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:29,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:29,812 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:24:29,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:24:29,820 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:29,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:29,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:29,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:29,854 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 12:24:29,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904909768] [2021-06-10 12:24:29,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:29,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:24:29,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149257623] [2021-06-10 12:24:29,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:24:29,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:29,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:24:29,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:24:29,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:24:29,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 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 12:24:29,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:29,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:24:29,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:30,039 INFO L129 PetriNetUnfolder]: 14/194 cut-off events. [2021-06-10 12:24:30,041 INFO L130 PetriNetUnfolder]: For 391/552 co-relation queries the response was YES. [2021-06-10 12:24:30,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 194 events. 14/194 cut-off events. For 391/552 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 926 event pairs, 5 based on Foata normal form. 10/199 useless extension candidates. Maximal degree in co-relation 504. Up to 26 conditions per place. [2021-06-10 12:24:30,044 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 18 selfloop transitions, 7 changer transitions 21/90 dead transitions. [2021-06-10 12:24:30,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 90 transitions, 534 flow [2021-06-10 12:24:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:24:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:24:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 771 transitions. [2021-06-10 12:24:30,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7907692307692308 [2021-06-10 12:24:30,046 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 771 transitions. [2021-06-10 12:24:30,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 771 transitions. [2021-06-10 12:24:30,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:30,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 771 transitions. [2021-06-10 12:24:30,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.30769230769231) internal successors, (771), 13 states have internal predecessors, (771), 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 12:24:30,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:30,050 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:30,050 INFO L185 Difference]: Start difference. First operand has 91 places, 66 transitions, 261 flow. Second operand 13 states and 771 transitions. [2021-06-10 12:24:30,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 90 transitions, 534 flow [2021-06-10 12:24:30,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 486 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-06-10 12:24:30,056 INFO L241 Difference]: Finished difference. Result has 106 places, 64 transitions, 272 flow [2021-06-10 12:24:30,056 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=272, PETRI_PLACES=106, PETRI_TRANSITIONS=64} [2021-06-10 12:24:30,056 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 37 predicate places. [2021-06-10 12:24:30,057 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 64 transitions, 272 flow [2021-06-10 12:24:30,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 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 12:24:30,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:30,057 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:30,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:24:30,057 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:30,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:30,059 INFO L82 PathProgramCache]: Analyzing trace with hash -994474274, now seen corresponding path program 1 times [2021-06-10 12:24:30,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:30,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852591916] [2021-06-10 12:24:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:30,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,148 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:24:30,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:24:30,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:24:30,174 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:24:30,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:30,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,182 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 12:24:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852591916] [2021-06-10 12:24:30,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:30,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:24:30,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929718011] [2021-06-10 12:24:30,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:24:30,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:30,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:24:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:24:30,185 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:24:30,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 64 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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 12:24:30,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:30,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:24:30,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:30,348 INFO L129 PetriNetUnfolder]: 353/895 cut-off events. [2021-06-10 12:24:30,348 INFO L130 PetriNetUnfolder]: For 651/662 co-relation queries the response was YES. [2021-06-10 12:24:30,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 895 events. 353/895 cut-off events. For 651/662 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6345 event pairs, 54 based on Foata normal form. 3/826 useless extension candidates. Maximal degree in co-relation 1867. Up to 244 conditions per place. [2021-06-10 12:24:30,355 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 13 selfloop transitions, 8 changer transitions 20/94 dead transitions. [2021-06-10 12:24:30,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 414 flow [2021-06-10 12:24:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:24:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:24:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-06-10 12:24:30,357 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-06-10 12:24:30,357 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-06-10 12:24:30,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-06-10 12:24:30,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:30,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-06-10 12:24:30,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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 12:24:30,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 12:24:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 12:24:30,360 INFO L185 Difference]: Start difference. First operand has 106 places, 64 transitions, 272 flow. Second operand 10 states and 653 transitions. [2021-06-10 12:24:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 414 flow [2021-06-10 12:24:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 362 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-06-10 12:24:30,365 INFO L241 Difference]: Finished difference. Result has 99 places, 70 transitions, 296 flow [2021-06-10 12:24:30,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2021-06-10 12:24:30,365 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 30 predicate places. [2021-06-10 12:24:30,365 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 296 flow [2021-06-10 12:24:30,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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 12:24:30,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:30,365 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:30,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:24:30,366 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1401624835, now seen corresponding path program 1 times [2021-06-10 12:24:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:30,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547481627] [2021-06-10 12:24:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:30,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,440 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:24:30,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:24:30,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:24:30,466 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:24:30,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:30,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,474 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 12:24:30,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547481627] [2021-06-10 12:24:30,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:30,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:30,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281477222] [2021-06-10 12:24:30,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:30,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:30,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:30,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:30,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:24:30,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 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 12:24:30,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:30,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:24:30,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:30,655 INFO L129 PetriNetUnfolder]: 178/604 cut-off events. [2021-06-10 12:24:30,656 INFO L130 PetriNetUnfolder]: For 1115/1569 co-relation queries the response was YES. [2021-06-10 12:24:30,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 604 events. 178/604 cut-off events. For 1115/1569 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4114 event pairs, 4 based on Foata normal form. 62/637 useless extension candidates. Maximal degree in co-relation 1949. Up to 261 conditions per place. [2021-06-10 12:24:30,660 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 13 selfloop transitions, 11 changer transitions 19/96 dead transitions. [2021-06-10 12:24:30,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 562 flow [2021-06-10 12:24:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 12:24:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 12:24:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 777 transitions. [2021-06-10 12:24:30,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2021-06-10 12:24:30,663 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 777 transitions. [2021-06-10 12:24:30,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 777 transitions. [2021-06-10 12:24:30,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:30,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 777 transitions. [2021-06-10 12:24:30,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.75) internal successors, (777), 12 states have internal predecessors, (777), 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 12:24:30,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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 12:24:30,668 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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 12:24:30,669 INFO L185 Difference]: Start difference. First operand has 99 places, 70 transitions, 296 flow. Second operand 12 states and 777 transitions. [2021-06-10 12:24:30,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 562 flow [2021-06-10 12:24:30,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 96 transitions, 544 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-10 12:24:30,674 INFO L241 Difference]: Finished difference. Result has 108 places, 73 transitions, 369 flow [2021-06-10 12:24:30,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=369, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2021-06-10 12:24:30,674 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 39 predicate places. [2021-06-10 12:24:30,674 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 369 flow [2021-06-10 12:24:30,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 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 12:24:30,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:30,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:30,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:24:30,675 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:30,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1108084534, now seen corresponding path program 1 times [2021-06-10 12:24:30,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:30,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222066375] [2021-06-10 12:24:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:30,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:30,750 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:24:30,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:24:30,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:24:30,776 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:24:30,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:30,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:30,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:30,786 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 12:24:30,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222066375] [2021-06-10 12:24:30,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:30,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:24:30,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580820552] [2021-06-10 12:24:30,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:24:30,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:24:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:24:30,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:24:30,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 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 12:24:30,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:30,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:24:30,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:30,980 INFO L129 PetriNetUnfolder]: 65/326 cut-off events. [2021-06-10 12:24:30,980 INFO L130 PetriNetUnfolder]: For 1626/2194 co-relation queries the response was YES. [2021-06-10 12:24:30,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1320 conditions, 326 events. 65/326 cut-off events. For 1626/2194 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1937 event pairs, 0 based on Foata normal form. 71/378 useless extension candidates. Maximal degree in co-relation 1264. Up to 125 conditions per place. [2021-06-10 12:24:30,982 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 7 selfloop transitions, 14 changer transitions 13/87 dead transitions. [2021-06-10 12:24:30,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 87 transitions, 571 flow [2021-06-10 12:24:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:24:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:24:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 829 transitions. [2021-06-10 12:24:30,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8502564102564103 [2021-06-10 12:24:30,985 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 829 transitions. [2021-06-10 12:24:30,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 829 transitions. [2021-06-10 12:24:30,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:30,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 829 transitions. [2021-06-10 12:24:30,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.76923076923077) internal successors, (829), 13 states have internal predecessors, (829), 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 12:24:30,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:30,989 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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 12:24:30,989 INFO L185 Difference]: Start difference. First operand has 108 places, 73 transitions, 369 flow. Second operand 13 states and 829 transitions. [2021-06-10 12:24:30,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 87 transitions, 571 flow [2021-06-10 12:24:30,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 87 transitions, 449 flow, removed 46 selfloop flow, removed 15 redundant places. [2021-06-10 12:24:30,994 INFO L241 Difference]: Finished difference. Result has 107 places, 73 transitions, 336 flow [2021-06-10 12:24:30,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=336, PETRI_PLACES=107, PETRI_TRANSITIONS=73} [2021-06-10 12:24:30,994 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 38 predicate places. [2021-06-10 12:24:30,994 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 73 transitions, 336 flow [2021-06-10 12:24:30,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 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 12:24:30,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:30,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:30,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:24:30,995 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:30,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1586047529, now seen corresponding path program 1 times [2021-06-10 12:24:30,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:30,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808203631] [2021-06-10 12:24:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:31,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:31,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:31,061 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:24:31,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:24:31,069 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:31,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:31,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:31,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:31,100 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 12:24:31,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808203631] [2021-06-10 12:24:31,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:31,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:31,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910707251] [2021-06-10 12:24:31,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:31,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:31,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:31,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:24:31,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 73 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 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 12:24:31,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:31,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:24:31,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:31,182 INFO L129 PetriNetUnfolder]: 32/237 cut-off events. [2021-06-10 12:24:31,182 INFO L130 PetriNetUnfolder]: For 506/587 co-relation queries the response was YES. [2021-06-10 12:24:31,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 237 events. 32/237 cut-off events. For 506/587 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1199 event pairs, 0 based on Foata normal form. 7/225 useless extension candidates. Maximal degree in co-relation 612. Up to 58 conditions per place. [2021-06-10 12:24:31,183 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 12 selfloop transitions, 3 changer transitions 13/77 dead transitions. [2021-06-10 12:24:31,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 77 transitions, 394 flow [2021-06-10 12:24:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:24:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:24:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2021-06-10 12:24:31,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7923809523809524 [2021-06-10 12:24:31,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2021-06-10 12:24:31,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2021-06-10 12:24:31,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:31,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2021-06-10 12:24:31,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 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 12:24:31,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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 12:24:31,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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 12:24:31,187 INFO L185 Difference]: Start difference. First operand has 107 places, 73 transitions, 336 flow. Second operand 7 states and 416 transitions. [2021-06-10 12:24:31,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 77 transitions, 394 flow [2021-06-10 12:24:31,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 77 transitions, 319 flow, removed 19 selfloop flow, removed 13 redundant places. [2021-06-10 12:24:31,192 INFO L241 Difference]: Finished difference. Result has 100 places, 64 transitions, 222 flow [2021-06-10 12:24:31,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=100, PETRI_TRANSITIONS=64} [2021-06-10 12:24:31,192 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 31 predicate places. [2021-06-10 12:24:31,192 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 64 transitions, 222 flow [2021-06-10 12:24:31,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 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 12:24:31,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:31,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:31,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:24:31,193 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:31,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1748571887, now seen corresponding path program 2 times [2021-06-10 12:24:31,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:31,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106394143] [2021-06-10 12:24:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:31,242 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:24:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:24:31,250 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:31,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:31,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:31,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:31,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:31,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:31,282 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 12:24:31,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106394143] [2021-06-10 12:24:31,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:31,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:31,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019849506] [2021-06-10 12:24:31,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:31,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:31,283 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 75 [2021-06-10 12:24:31,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 64 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 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 12:24:31,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:31,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 75 [2021-06-10 12:24:31,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:31,371 INFO L129 PetriNetUnfolder]: 5/73 cut-off events. [2021-06-10 12:24:31,371 INFO L130 PetriNetUnfolder]: For 26/28 co-relation queries the response was YES. [2021-06-10 12:24:31,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 5/73 cut-off events. For 26/28 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 141. Up to 6 conditions per place. [2021-06-10 12:24:31,372 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2021-06-10 12:24:31,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 62 transitions, 248 flow [2021-06-10 12:24:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:24:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:24:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 449 transitions. [2021-06-10 12:24:31,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7483333333333333 [2021-06-10 12:24:31,373 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 449 transitions. [2021-06-10 12:24:31,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 449 transitions. [2021-06-10 12:24:31,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:31,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 449 transitions. [2021-06-10 12:24:31,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.125) internal successors, (449), 8 states have internal predecessors, (449), 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 12:24:31,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 12:24:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 12:24:31,375 INFO L185 Difference]: Start difference. First operand has 100 places, 64 transitions, 222 flow. Second operand 8 states and 449 transitions. [2021-06-10 12:24:31,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 62 transitions, 248 flow [2021-06-10 12:24:31,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 62 transitions, 193 flow, removed 13 selfloop flow, removed 17 redundant places. [2021-06-10 12:24:31,376 INFO L241 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2021-06-10 12:24:31,377 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2021-06-10 12:24:31,377 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2021-06-10 12:24:31,377 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2021-06-10 12:24:31,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 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 12:24:31,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:24:31,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:24:31 BasicIcfg [2021-06-10 12:24:31,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:24:31,382 INFO L168 Benchmark]: Toolchain (without parser) took 3450.05 ms. Allocated memory was 394.3 MB in the beginning and 488.6 MB in the end (delta: 94.4 MB). Free memory was 356.1 MB in the beginning and 335.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 116.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:31,383 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 394.3 MB. Free memory is still 374.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:24:31,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.20 ms. Allocated memory is still 394.3 MB. Free memory was 356.0 MB in the beginning and 355.1 MB in the end (delta: 874.8 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:31,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.35 ms. Allocated memory is still 394.3 MB. Free memory was 355.1 MB in the beginning and 353.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:31,387 INFO L168 Benchmark]: Boogie Preprocessor took 12.85 ms. Allocated memory is still 394.3 MB. Free memory was 353.0 MB in the beginning and 352.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:24:31,388 INFO L168 Benchmark]: RCFGBuilder took 421.86 ms. Allocated memory is still 394.3 MB. Free memory was 352.0 MB in the beginning and 327.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:31,388 INFO L168 Benchmark]: TraceAbstraction took 2624.89 ms. Allocated memory was 394.3 MB in the beginning and 488.6 MB in the end (delta: 94.4 MB). Free memory was 327.9 MB in the beginning and 335.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 88.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:31,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 394.3 MB. Free memory is still 374.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 364.20 ms. Allocated memory is still 394.3 MB. Free memory was 356.0 MB in the beginning and 355.1 MB in the end (delta: 874.8 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.35 ms. Allocated memory is still 394.3 MB. Free memory was 355.1 MB in the beginning and 353.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.85 ms. Allocated memory is still 394.3 MB. Free memory was 353.0 MB in the beginning and 352.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 421.86 ms. Allocated memory is still 394.3 MB. Free memory was 352.0 MB in the beginning and 327.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2624.89 ms. Allocated memory was 394.3 MB in the beginning and 488.6 MB in the end (delta: 94.4 MB). Free memory was 327.9 MB in the beginning and 335.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 88.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2538.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1398.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 234 SDslu, 366 SDs, 0 SdLazy, 359 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 846.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=369occurred in iteration=5, InterpolantAutomatonStates: 84, 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: 24.4ms SsaConstructionTime, 155.9ms SatisfiabilityAnalysisTime, 769.5ms InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 1572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...