/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:53:45,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:53:45,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:53:45,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:53:45,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:53:45,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:53:45,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:53:45,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:53:45,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:53:45,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:53:45,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:53:45,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:53:45,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:53:45,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:53:45,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:53:45,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:53:45,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:53:45,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:53:45,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:53:45,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:53:45,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:53:45,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:53:45,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:53:45,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:53:45,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:53:45,687 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:53:45,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:53:45,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:53:45,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:53:45,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:53:45,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:53:45,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:53:45,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:53:45,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:53:45,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:53:45,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:53:45,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:53:45,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:53:45,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:53:45,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:53:45,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:53:46,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:53:46,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:53:46,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:53:46,018 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:53:46,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-24 19:53:46,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104091b30/93fa7dee67b444929caff39a88bf0576/FLAG4e15bf6b2 [2021-03-24 19:53:46,522 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:53:46,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-24 19:53:46,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104091b30/93fa7dee67b444929caff39a88bf0576/FLAG4e15bf6b2 [2021-03-24 19:53:46,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104091b30/93fa7dee67b444929caff39a88bf0576 [2021-03-24 19:53:46,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:53:46,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:53:46,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:53:46,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:53:46,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:53:46,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:53:46" (1/1) ... [2021-03-24 19:53:46,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3e11fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:46, skipping insertion in model container [2021-03-24 19:53:46,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:53:46" (1/1) ... [2021-03-24 19:53:46,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:53:46,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:53:47,010 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i[950,963] [2021-03-24 19:53:47,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:53:47,167 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:53:47,177 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i[950,963] [2021-03-24 19:53:47,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:53:47,256 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:53:47,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47 WrapperNode [2021-03-24 19:53:47,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:53:47,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:53:47,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:53:47,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:53:47,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:53:47,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:53:47,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:53:47,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:53:47,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... [2021-03-24 19:53:47,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:53:47,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:53:47,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:53:47,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:53:47,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:53:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:53:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:53:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:53:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:53:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:53:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:53:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:53:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:53:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:53:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:53:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:53:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:53:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:53:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:53:47,392 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:53:47,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:53:47,587 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:53:47,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:53:47 BoogieIcfgContainer [2021-03-24 19:53:47,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:53:47,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:53:47,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:53:47,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:53:47,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:53:46" (1/3) ... [2021-03-24 19:53:47,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd9605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:53:47, skipping insertion in model container [2021-03-24 19:53:47,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:53:47" (2/3) ... [2021-03-24 19:53:47,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd9605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:53:47, skipping insertion in model container [2021-03-24 19:53:47,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:53:47" (3/3) ... [2021-03-24 19:53:47,593 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-03-24 19:53:47,596 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:53:47,599 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:53:47,599 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:53:47,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,632 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,632 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:53:47,635 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:53:47,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:53:47,661 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:53:47,661 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:53:47,661 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:53:47,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:53:47,661 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:53:47,661 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:53:47,661 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:53:47,661 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:53:47,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-03-24 19:53:47,693 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-03-24 19:53:47,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:47,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-24 19:53:47,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-03-24 19:53:47,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-03-24 19:53:47,699 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:53:47,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-24 19:53:47,710 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-03-24 19:53:47,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-03-24 19:53:47,721 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-24 19:53:47,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:47,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-24 19:53:47,724 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-24 19:53:48,635 INFO L154 LiptonReduction]: Checked pairs total: 1064 [2021-03-24 19:53:48,635 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 19:53:48,637 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 939 [2021-03-24 19:53:48,643 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:53:48,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:48,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:48,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:48,644 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2096371605, now seen corresponding path program 1 times [2021-03-24 19:53:48,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:48,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561852993] [2021-03-24 19:53:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:48,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:48,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:48,799 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:48,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:48,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:48,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:48,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561852993] [2021-03-24 19:53:48,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:48,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:53:48,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385316943] [2021-03-24 19:53:48,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:48,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:48,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:48,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:48,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:48,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:48,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:48,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:48,874 INFO L129 PetriNetUnfolder]: 110/265 cut-off events. [2021-03-24 19:53:48,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:53:48,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 265 events. 110/265 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1353 event pairs, 32 based on Foata normal form. 25/281 useless extension candidates. Maximal degree in co-relation 470. Up to 98 conditions per place. [2021-03-24 19:53:48,877 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 9 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-24 19:53:48,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 137 flow [2021-03-24 19:53:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-24 19:53:48,885 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7872727272727272 [2021-03-24 19:53:48,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-24 19:53:48,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-24 19:53:48,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:48,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-24 19:53:48,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:48,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:48,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:48,900 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 433 transitions. [2021-03-24 19:53:48,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 137 flow [2021-03-24 19:53:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:53:48,903 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-24 19:53:48,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-24 19:53:48,905 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-24 19:53:48,905 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 108 flow [2021-03-24 19:53:48,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:48,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:48,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:48,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:53:48,916 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash 562991605, now seen corresponding path program 1 times [2021-03-24 19:53:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:48,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138529329] [2021-03-24 19:53:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:48,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:48,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:48,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:48,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:48,994 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:48,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:48,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:49,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138529329] [2021-03-24 19:53:49,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067000066] [2021-03-24 19:53:49,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:49,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:49,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,069 INFO L129 PetriNetUnfolder]: 66/204 cut-off events. [2021-03-24 19:53:49,070 INFO L130 PetriNetUnfolder]: For 200/259 co-relation queries the response was YES. [2021-03-24 19:53:49,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 204 events. 66/204 cut-off events. For 200/259 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1052 event pairs, 2 based on Foata normal form. 27/228 useless extension candidates. Maximal degree in co-relation 623. Up to 80 conditions per place. [2021-03-24 19:53:49,071 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 13 selfloop transitions, 11 changer transitions 19/55 dead transitions. [2021-03-24 19:53:49,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 366 flow [2021-03-24 19:53:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:53:49,074 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787012987012987 [2021-03-24 19:53:49,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:53:49,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:53:49,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:53:49,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,078 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 108 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:53:49,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 366 flow [2021-03-24 19:53:49,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:53:49,081 INFO L241 Difference]: Finished difference. Result has 44 places, 33 transitions, 200 flow [2021-03-24 19:53:49,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2021-03-24 19:53:49,082 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:53:49,082 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 200 flow [2021-03-24 19:53:49,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,082 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:53:49,082 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,083 INFO L82 PathProgramCache]: Analyzing trace with hash 359656498, now seen corresponding path program 1 times [2021-03-24 19:53:49,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053774956] [2021-03-24 19:53:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,119 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:49,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:49,129 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:49,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053774956] [2021-03-24 19:53:49,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037170867] [2021-03-24 19:53:49,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:49,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:49,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,173 INFO L129 PetriNetUnfolder]: 45/150 cut-off events. [2021-03-24 19:53:49,173 INFO L130 PetriNetUnfolder]: For 558/646 co-relation queries the response was YES. [2021-03-24 19:53:49,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 150 events. 45/150 cut-off events. For 558/646 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 674 event pairs, 6 based on Foata normal form. 26/174 useless extension candidates. Maximal degree in co-relation 577. Up to 54 conditions per place. [2021-03-24 19:53:49,175 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 14 selfloop transitions, 15 changer transitions 11/52 dead transitions. [2021-03-24 19:53:49,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 426 flow [2021-03-24 19:53:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2021-03-24 19:53:49,176 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2021-03-24 19:53:49,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2021-03-24 19:53:49,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2021-03-24 19:53:49,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2021-03-24 19:53:49,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 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) [2021-03-24 19:53:49,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,180 INFO L185 Difference]: Start difference. First operand has 44 places, 33 transitions, 200 flow. Second operand 7 states and 600 transitions. [2021-03-24 19:53:49,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 426 flow [2021-03-24 19:53:49,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 416 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-03-24 19:53:49,183 INFO L241 Difference]: Finished difference. Result has 52 places, 38 transitions, 294 flow [2021-03-24 19:53:49,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2021-03-24 19:53:49,183 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-24 19:53:49,183 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 294 flow [2021-03-24 19:53:49,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,184 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,184 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:53:49,184 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash 272854744, now seen corresponding path program 1 times [2021-03-24 19:53:49,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356071219] [2021-03-24 19:53:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,211 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:49,216 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:49,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356071219] [2021-03-24 19:53:49,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667951212] [2021-03-24 19:53:49,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,221 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:49,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:49,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,258 INFO L129 PetriNetUnfolder]: 36/128 cut-off events. [2021-03-24 19:53:49,258 INFO L130 PetriNetUnfolder]: For 744/818 co-relation queries the response was YES. [2021-03-24 19:53:49,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 128 events. 36/128 cut-off events. For 744/818 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 544 event pairs, 2 based on Foata normal form. 8/133 useless extension candidates. Maximal degree in co-relation 569. Up to 43 conditions per place. [2021-03-24 19:53:49,259 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 18 selfloop transitions, 14 changer transitions 8/52 dead transitions. [2021-03-24 19:53:49,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 514 flow [2021-03-24 19:53:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2021-03-24 19:53:49,261 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-03-24 19:53:49,261 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2021-03-24 19:53:49,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2021-03-24 19:53:49,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2021-03-24 19:53:49,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,264 INFO L185 Difference]: Start difference. First operand has 52 places, 38 transitions, 294 flow. Second operand 7 states and 594 transitions. [2021-03-24 19:53:49,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 514 flow [2021-03-24 19:53:49,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 490 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 19:53:49,268 INFO L241 Difference]: Finished difference. Result has 56 places, 41 transitions, 381 flow [2021-03-24 19:53:49,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2021-03-24 19:53:49,268 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-24 19:53:49,268 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 381 flow [2021-03-24 19:53:49,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,269 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:53:49,269 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash 417184671, now seen corresponding path program 1 times [2021-03-24 19:53:49,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868484974] [2021-03-24 19:53:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,301 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:49,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:49,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:49,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868484974] [2021-03-24 19:53:49,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866234847] [2021-03-24 19:53:49,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:49,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:49,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,411 INFO L129 PetriNetUnfolder]: 26/119 cut-off events. [2021-03-24 19:53:49,411 INFO L130 PetriNetUnfolder]: For 906/969 co-relation queries the response was YES. [2021-03-24 19:53:49,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 119 events. 26/119 cut-off events. For 906/969 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 524 event pairs, 1 based on Foata normal form. 22/139 useless extension candidates. Maximal degree in co-relation 583. Up to 37 conditions per place. [2021-03-24 19:53:49,414 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 12 selfloop transitions, 19 changer transitions 6/49 dead transitions. [2021-03-24 19:53:49,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 563 flow [2021-03-24 19:53:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2021-03-24 19:53:49,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7688311688311689 [2021-03-24 19:53:49,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2021-03-24 19:53:49,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2021-03-24 19:53:49,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2021-03-24 19:53:49,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,419 INFO L185 Difference]: Start difference. First operand has 56 places, 41 transitions, 381 flow. Second operand 7 states and 592 transitions. [2021-03-24 19:53:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 563 flow [2021-03-24 19:53:49,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 517 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-24 19:53:49,435 INFO L241 Difference]: Finished difference. Result has 60 places, 41 transitions, 428 flow [2021-03-24 19:53:49,436 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2021-03-24 19:53:49,436 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-24 19:53:49,436 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 428 flow [2021-03-24 19:53:49,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:53:49,438 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,439 INFO L82 PathProgramCache]: Analyzing trace with hash 399032342, now seen corresponding path program 1 times [2021-03-24 19:53:49,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078442435] [2021-03-24 19:53:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,512 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:49,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078442435] [2021-03-24 19:53:49,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509958309] [2021-03-24 19:53:49,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 110 [2021-03-24 19:53:49,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 110 [2021-03-24 19:53:49,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,588 INFO L129 PetriNetUnfolder]: 23/126 cut-off events. [2021-03-24 19:53:49,588 INFO L130 PetriNetUnfolder]: For 1087/1130 co-relation queries the response was YES. [2021-03-24 19:53:49,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 126 events. 23/126 cut-off events. For 1087/1130 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 627 event pairs, 2 based on Foata normal form. 13/138 useless extension candidates. Maximal degree in co-relation 655. Up to 39 conditions per place. [2021-03-24 19:53:49,589 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 7 selfloop transitions, 7 changer transitions 15/48 dead transitions. [2021-03-24 19:53:49,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 579 flow [2021-03-24 19:53:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2021-03-24 19:53:49,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-24 19:53:49,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2021-03-24 19:53:49,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2021-03-24 19:53:49,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2021-03-24 19:53:49,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,609 INFO L185 Difference]: Start difference. First operand has 60 places, 41 transitions, 428 flow. Second operand 5 states and 440 transitions. [2021-03-24 19:53:49,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 579 flow [2021-03-24 19:53:49,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 555 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-24 19:53:49,613 INFO L241 Difference]: Finished difference. Result has 60 places, 33 transitions, 327 flow [2021-03-24 19:53:49,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=60, PETRI_TRANSITIONS=33} [2021-03-24 19:53:49,616 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-24 19:53:49,616 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 33 transitions, 327 flow [2021-03-24 19:53:49,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,616 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:53:49,617 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1590709722, now seen corresponding path program 2 times [2021-03-24 19:53:49,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944459017] [2021-03-24 19:53:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,699 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:53:49,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:53:49,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944459017] [2021-03-24 19:53:49,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:49,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181292091] [2021-03-24 19:53:49,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:53:49,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:53:49,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:53:49,706 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2021-03-24 19:53:49,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 33 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2021-03-24 19:53:49,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,782 INFO L129 PetriNetUnfolder]: 92/240 cut-off events. [2021-03-24 19:53:49,782 INFO L130 PetriNetUnfolder]: For 1253/1316 co-relation queries the response was YES. [2021-03-24 19:53:49,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 240 events. 92/240 cut-off events. For 1253/1316 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1319 event pairs, 33 based on Foata normal form. 28/252 useless extension candidates. Maximal degree in co-relation 771. Up to 139 conditions per place. [2021-03-24 19:53:49,784 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 7 changer transitions 4/43 dead transitions. [2021-03-24 19:53:49,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 379 flow [2021-03-24 19:53:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2021-03-24 19:53:49,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7781818181818182 [2021-03-24 19:53:49,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2021-03-24 19:53:49,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2021-03-24 19:53:49,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2021-03-24 19:53:49,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,788 INFO L185 Difference]: Start difference. First operand has 60 places, 33 transitions, 327 flow. Second operand 5 states and 428 transitions. [2021-03-24 19:53:49,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 379 flow [2021-03-24 19:53:49,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 294 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-24 19:53:49,791 INFO L241 Difference]: Finished difference. Result has 56 places, 39 transitions, 292 flow [2021-03-24 19:53:49,791 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2021-03-24 19:53:49,791 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-24 19:53:49,792 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 292 flow [2021-03-24 19:53:49,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,792 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:53:49,792 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1836704224, now seen corresponding path program 1 times [2021-03-24 19:53:49,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604485504] [2021-03-24 19:53:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,844 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:53:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:53:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:49,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604485504] [2021-03-24 19:53:49,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:49,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:53:49,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693617279] [2021-03-24 19:53:49,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:49,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:49,853 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2021-03-24 19:53:49,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:49,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2021-03-24 19:53:49,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:49,916 INFO L129 PetriNetUnfolder]: 51/173 cut-off events. [2021-03-24 19:53:49,916 INFO L130 PetriNetUnfolder]: For 937/1183 co-relation queries the response was YES. [2021-03-24 19:53:49,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 173 events. 51/173 cut-off events. For 937/1183 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 910 event pairs, 4 based on Foata normal form. 76/236 useless extension candidates. Maximal degree in co-relation 654. Up to 73 conditions per place. [2021-03-24 19:53:49,917 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 10 changer transitions 11/49 dead transitions. [2021-03-24 19:53:49,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 382 flow [2021-03-24 19:53:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:53:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:53:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2021-03-24 19:53:49,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7766233766233767 [2021-03-24 19:53:49,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2021-03-24 19:53:49,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2021-03-24 19:53:49,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:49,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2021-03-24 19:53:49,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,921 INFO L185 Difference]: Start difference. First operand has 56 places, 39 transitions, 292 flow. Second operand 7 states and 598 transitions. [2021-03-24 19:53:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 382 flow [2021-03-24 19:53:49,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 376 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-24 19:53:49,926 INFO L241 Difference]: Finished difference. Result has 64 places, 38 transitions, 316 flow [2021-03-24 19:53:49,926 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2021-03-24 19:53:49,926 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 19:53:49,926 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 316 flow [2021-03-24 19:53:49,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:49,927 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:49,927 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:53:49,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:53:49,928 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:49,928 INFO L82 PathProgramCache]: Analyzing trace with hash 525653484, now seen corresponding path program 1 times [2021-03-24 19:53:49,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:49,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523435780] [2021-03-24 19:53:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:49,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:49,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:49,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:49,994 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:53:49,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:53:49,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:50,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:50,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523435780] [2021-03-24 19:53:50,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:50,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:53:50,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859449714] [2021-03-24 19:53:50,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:53:50,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:50,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:53:50,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:53:50,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2021-03-24 19:53:50,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 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) [2021-03-24 19:53:50,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:50,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2021-03-24 19:53:50,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:50,084 INFO L129 PetriNetUnfolder]: 22/93 cut-off events. [2021-03-24 19:53:50,085 INFO L130 PetriNetUnfolder]: For 849/1142 co-relation queries the response was YES. [2021-03-24 19:53:50,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 93 events. 22/93 cut-off events. For 849/1142 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 364 event pairs, 0 based on Foata normal form. 86/176 useless extension candidates. Maximal degree in co-relation 450. Up to 57 conditions per place. [2021-03-24 19:53:50,085 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 2 selfloop transitions, 10 changer transitions 15/42 dead transitions. [2021-03-24 19:53:50,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 42 transitions, 386 flow [2021-03-24 19:53:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:53:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:53:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 759 transitions. [2021-03-24 19:53:50,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-03-24 19:53:50,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 759 transitions. [2021-03-24 19:53:50,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 759 transitions. [2021-03-24 19:53:50,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:50,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 759 transitions. [2021-03-24 19:53:50,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.33333333333333) internal successors, (759), 9 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,091 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,091 INFO L185 Difference]: Start difference. First operand has 64 places, 38 transitions, 316 flow. Second operand 9 states and 759 transitions. [2021-03-24 19:53:50,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 42 transitions, 386 flow [2021-03-24 19:53:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 42 transitions, 343 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 19:53:50,093 INFO L241 Difference]: Finished difference. Result has 67 places, 27 transitions, 206 flow [2021-03-24 19:53:50,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=27} [2021-03-24 19:53:50,093 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2021-03-24 19:53:50,093 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 27 transitions, 206 flow [2021-03-24 19:53:50,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 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) [2021-03-24 19:53:50,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:53:50,094 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] [2021-03-24 19:53:50,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:53:50,094 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:53:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:53:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash -867461907, now seen corresponding path program 1 times [2021-03-24 19:53:50,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:53:50,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245563346] [2021-03-24 19:53:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:53:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:53:50,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:50,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:53:50,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:53:50,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:53:50,144 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:53:50,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:53:50,152 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:53:50,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:53:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:53:50,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245563346] [2021-03-24 19:53:50,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:53:50,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:53:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128701497] [2021-03-24 19:53:50,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:53:50,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:53:50,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:53:50,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:53:50,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2021-03-24 19:53:50,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 27 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:53:50,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2021-03-24 19:53:50,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:53:50,171 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-24 19:53:50,171 INFO L130 PetriNetUnfolder]: For 122/127 co-relation queries the response was YES. [2021-03-24 19:53:50,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 29 events. 5/29 cut-off events. For 122/127 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 123. Up to 11 conditions per place. [2021-03-24 19:53:50,171 INFO L132 encePairwiseOnDemand]: 103/110 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:53:50,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 26 transitions, 220 flow [2021-03-24 19:53:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:53:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:53:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2021-03-24 19:53:50,172 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7527272727272727 [2021-03-24 19:53:50,172 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2021-03-24 19:53:50,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2021-03-24 19:53:50,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:53:50,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2021-03-24 19:53:50,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,174 INFO L185 Difference]: Start difference. First operand has 67 places, 27 transitions, 206 flow. Second operand 5 states and 414 transitions. [2021-03-24 19:53:50,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 26 transitions, 220 flow [2021-03-24 19:53:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 116 flow, removed 19 selfloop flow, removed 23 redundant places. [2021-03-24 19:53:50,175 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2021-03-24 19:53:50,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2021-03-24 19:53:50,176 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 19:53:50,176 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2021-03-24 19:53:50,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:53:50,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:53:50,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:53:50 BasicIcfg [2021-03-24 19:53:50,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:53:50,182 INFO L168 Benchmark]: Toolchain (without parser) took 3310.95 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 302.7 MB in the beginning and 242.6 MB in the end (delta: 60.1 MB). Peak memory consumption was 129.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:50,184 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 339.7 MB. Free memory was 321.3 MB in the beginning and 321.3 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:53:50,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.72 ms. Allocated memory is still 339.7 MB. Free memory was 302.5 MB in the beginning and 302.9 MB in the end (delta: -385.1 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:50,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.17 ms. Allocated memory is still 339.7 MB. Free memory was 302.9 MB in the beginning and 300.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:50,187 INFO L168 Benchmark]: Boogie Preprocessor took 25.15 ms. Allocated memory is still 339.7 MB. Free memory was 300.7 MB in the beginning and 299.7 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:53:50,187 INFO L168 Benchmark]: RCFGBuilder took 260.14 ms. Allocated memory is still 339.7 MB. Free memory was 299.7 MB in the beginning and 276.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:50,188 INFO L168 Benchmark]: TraceAbstraction took 2590.88 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 276.6 MB in the beginning and 242.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:53:50,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 339.7 MB. Free memory was 321.3 MB in the beginning and 321.3 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 384.72 ms. Allocated memory is still 339.7 MB. Free memory was 302.5 MB in the beginning and 302.9 MB in the end (delta: -385.1 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.17 ms. Allocated memory is still 339.7 MB. Free memory was 302.9 MB in the beginning and 300.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.15 ms. Allocated memory is still 339.7 MB. Free memory was 300.7 MB in the beginning and 299.7 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 260.14 ms. Allocated memory is still 339.7 MB. Free memory was 299.7 MB in the beginning and 276.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2590.88 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 276.6 MB in the beginning and 242.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 926.0ms, 66 PlacesBefore, 31 PlacesAfterwards, 57 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 686, positive: 653, positive conditional: 0, positive unconditional: 653, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 551, positive: 529, positive conditional: 0, positive unconditional: 529, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 551, positive: 529, positive conditional: 0, positive unconditional: 529, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 551, positive: 523, positive conditional: 0, positive unconditional: 523, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 65, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 686, positive: 124, positive conditional: 0, positive unconditional: 124, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 551, unknown conditional: 0, unknown unconditional: 551] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2518.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 697.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 978.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 98 SDtfs, 73 SDslu, 118 SDs, 0 SdLazy, 198 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 157.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 219.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=5, InterpolantAutomatonStates: 64, 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: 16.9ms SsaConstructionTime, 149.5ms SatisfiabilityAnalysisTime, 506.8ms InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...