/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/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:15:13,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:15:13,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:15:13,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-10 21:15:13,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:15:13,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:15:13,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:15:13,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:15:13,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:15:13,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:15:13,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:15:13,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:15:13,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:15:13,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:15:13,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:15:13,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:15:13,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:15:13,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:15:13,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:15:13,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:15:13,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:15:13,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:15:13,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:15:13,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:15:13,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:15:13,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:15:13,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:15:13,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:15:13,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:15:13,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:15:13,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:15:13,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:15:14,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:15:14,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:15:14,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:15:14,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:15:14,073 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:15:14,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-06-10 21:15:14,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7090dd773/1ed9767b280a43a0b359a060845d5e02/FLAG3a3ebe498 [2021-06-10 21:15:14,596 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:15:14,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-06-10 21:15:14,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7090dd773/1ed9767b280a43a0b359a060845d5e02/FLAG3a3ebe498 [2021-06-10 21:15:14,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7090dd773/1ed9767b280a43a0b359a060845d5e02 [2021-06-10 21:15:14,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:15:14,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:15:14,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:15:14,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:15:14,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:15:14,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:15:14" (1/1) ... [2021-06-10 21:15:14,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aaf69c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:14, skipping insertion in model container [2021-06-10 21:15:14,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:15:14" (1/1) ... [2021-06-10 21:15:14,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:15:15,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:15:15,170 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/safe014_tso.opt.i[949,962] [2021-06-10 21:15:15,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:15:15,266 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:15:15,274 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/safe014_tso.opt.i[949,962] [2021-06-10 21:15:15,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:15:15,344 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:15:15,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15 WrapperNode [2021-06-10 21:15:15,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:15:15,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:15:15,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:15:15,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:15:15,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:15:15,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:15:15,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:15:15,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:15:15,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... [2021-06-10 21:15:15,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:15:15,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:15:15,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:15:15,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:15:15,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:15:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:15:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:15:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:15:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:15:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:15:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:15:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:15:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:15:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:15:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:15:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:15:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:15:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:15:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:15:15,462 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:15:15,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:15:15,672 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:15:15,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:15:15 BoogieIcfgContainer [2021-06-10 21:15:15,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:15:15,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:15:15,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:15:15,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:15:15,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:15:14" (1/3) ... [2021-06-10 21:15:15,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160265e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:15:15, skipping insertion in model container [2021-06-10 21:15:15,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:15:15" (2/3) ... [2021-06-10 21:15:15,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160265e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:15:15, skipping insertion in model container [2021-06-10 21:15:15,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:15:15" (3/3) ... [2021-06-10 21:15:15,678 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-06-10 21:15:15,682 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:15:15,684 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:15:15,685 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:15:15,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:15:15,749 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:15:15,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:15:15,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:15:15,790 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:15:15,791 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:15:15,791 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:15:15,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:15:15,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:15:15,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:15:15,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:15:15,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:15:15,844 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:15:15,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:15:15,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:15:15,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:15:15,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:15:15,856 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:15:15,863 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:15:15,866 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:15:15,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:15:15,886 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:15:15,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:15:15,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:15:15,889 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:15:15,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:15,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:16,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:16,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:16,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:16,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:16,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:16,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:16,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:16,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:16,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:16,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:16,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:16,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:16,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:16,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:16,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:17,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:17,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:17,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:17,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:15:17,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:15:17,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:17,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,275 INFO L147 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size 1 [2021-06-10 21:15:17,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:17,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:17,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:17,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:17,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:17,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:17,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:17,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:17,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:17,875 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:15:18,055 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:15:18,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:15:18,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:15:18,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:15:18,138 INFO L163 LiptonReduction]: Checked pairs total: 1712 [2021-06-10 21:15:18,138 INFO L165 LiptonReduction]: Total number of compositions: 44 [2021-06-10 21:15:18,140 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2285 [2021-06-10 21:15:18,150 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-10 21:15:18,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:15:18,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,151 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,151 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1507554977, now seen corresponding path program 1 times [2021-06-10 21:15:18,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350444] [2021-06-10 21:15:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,320 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:15:18,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:15:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350444] [2021-06-10 21:15:18,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:15:18,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775697843] [2021-06-10 21:15:18,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:15:18,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:15:18,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:15:18,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-10 21:15:18,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-10 21:15:18,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,387 INFO L129 PetriNetUnfolder]: 47/139 cut-off events. [2021-06-10 21:15:18,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:15:18,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 139 events. 47/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 676 event pairs, 19 based on Foata normal form. 7/138 useless extension candidates. Maximal degree in co-relation 235. Up to 66 conditions per place. [2021-06-10 21:15:18,390 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-06-10 21:15:18,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 77 flow [2021-06-10 21:15:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:15:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:15:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-06-10 21:15:18,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2021-06-10 21:15:18,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-06-10 21:15:18,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-06-10 21:15:18,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-06-10 21:15:18,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,417 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2021-06-10 21:15:18,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 77 flow [2021-06-10 21:15:18,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:15:18,420 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-06-10 21:15:18,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-06-10 21:15:18,423 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-06-10 21:15:18,424 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-06-10 21:15:18,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,424 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:15:18,424 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,425 INFO L82 PathProgramCache]: Analyzing trace with hash 510435415, now seen corresponding path program 1 times [2021-06-10 21:15:18,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087606471] [2021-06-10 21:15:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087606471] [2021-06-10 21:15:18,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:15:18,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752391884] [2021-06-10 21:15:18,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:15:18,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:15:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:15:18,514 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 119 [2021-06-10 21:15:18,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 119 [2021-06-10 21:15:18,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,543 INFO L129 PetriNetUnfolder]: 29/108 cut-off events. [2021-06-10 21:15:18,543 INFO L130 PetriNetUnfolder]: For 56/74 co-relation queries the response was YES. [2021-06-10 21:15:18,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 108 events. 29/108 cut-off events. For 56/74 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 444 event pairs, 7 based on Foata normal form. 19/121 useless extension candidates. Maximal degree in co-relation 241. Up to 43 conditions per place. [2021-06-10 21:15:18,544 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 1 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2021-06-10 21:15:18,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 110 flow [2021-06-10 21:15:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:15:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:15:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2021-06-10 21:15:18,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2021-06-10 21:15:18,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2021-06-10 21:15:18,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2021-06-10 21:15:18,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2021-06-10 21:15:18,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,549 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,549 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 399 transitions. [2021-06-10 21:15:18,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 110 flow [2021-06-10 21:15:18,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:15:18,551 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 91 flow [2021-06-10 21:15:18,552 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-06-10 21:15:18,552 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-06-10 21:15:18,552 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 91 flow [2021-06-10 21:15:18,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,552 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,553 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:15:18,553 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,553 INFO L82 PathProgramCache]: Analyzing trace with hash 882900070, now seen corresponding path program 1 times [2021-06-10 21:15:18,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300266867] [2021-06-10 21:15:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300266867] [2021-06-10 21:15:18,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:15:18,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597371644] [2021-06-10 21:15:18,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:15:18,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:15:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:15:18,603 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2021-06-10 21:15:18,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2021-06-10 21:15:18,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,621 INFO L129 PetriNetUnfolder]: 8/58 cut-off events. [2021-06-10 21:15:18,621 INFO L130 PetriNetUnfolder]: For 38/45 co-relation queries the response was YES. [2021-06-10 21:15:18,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 58 events. 8/58 cut-off events. For 38/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 192 event pairs, 2 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 143. Up to 22 conditions per place. [2021-06-10 21:15:18,622 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2021-06-10 21:15:18,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 141 flow [2021-06-10 21:15:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:15:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:15:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-06-10 21:15:18,623 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-06-10 21:15:18,623 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-06-10 21:15:18,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-06-10 21:15:18,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-06-10 21:15:18,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,625 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 91 flow. Second operand 4 states and 392 transitions. [2021-06-10 21:15:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 141 flow [2021-06-10 21:15:18,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 133 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:15:18,626 INFO L241 Difference]: Finished difference. Result has 33 places, 19 transitions, 87 flow [2021-06-10 21:15:18,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2021-06-10 21:15:18,626 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-06-10 21:15:18,626 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 87 flow [2021-06-10 21:15:18,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,627 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,627 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:15:18,627 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1531785353, now seen corresponding path program 1 times [2021-06-10 21:15:18,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277547797] [2021-06-10 21:15:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:15:18,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,652 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:15:18,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:15:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277547797] [2021-06-10 21:15:18,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:15:18,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402236229] [2021-06-10 21:15:18,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:15:18,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:15:18,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:15:18,660 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-10 21:15:18,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-10 21:15:18,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,679 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-06-10 21:15:18,679 INFO L130 PetriNetUnfolder]: For 44/53 co-relation queries the response was YES. [2021-06-10 21:15:18,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 33 events. 1/33 cut-off events. For 44/53 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 7/40 useless extension candidates. Maximal degree in co-relation 82. Up to 11 conditions per place. [2021-06-10 21:15:18,680 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 3 selfloop transitions, 4 changer transitions 7/24 dead transitions. [2021-06-10 21:15:18,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 137 flow [2021-06-10 21:15:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:15:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:15:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2021-06-10 21:15:18,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7689075630252101 [2021-06-10 21:15:18,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2021-06-10 21:15:18,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2021-06-10 21:15:18,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2021-06-10 21:15:18,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,685 INFO L185 Difference]: Start difference. First operand has 33 places, 19 transitions, 87 flow. Second operand 6 states and 549 transitions. [2021-06-10 21:15:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 137 flow [2021-06-10 21:15:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 121 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-06-10 21:15:18,686 INFO L241 Difference]: Finished difference. Result has 36 places, 17 transitions, 74 flow [2021-06-10 21:15:18,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2021-06-10 21:15:18,686 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-06-10 21:15:18,686 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 74 flow [2021-06-10 21:15:18,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,687 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,687 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:15:18,687 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1979847109, now seen corresponding path program 1 times [2021-06-10 21:15:18,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844749012] [2021-06-10 21:15:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:15:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844749012] [2021-06-10 21:15:18,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:15:18,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953596688] [2021-06-10 21:15:18,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:15:18,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:15:18,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:15:18,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-06-10 21:15:18,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-06-10 21:15:18,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,739 INFO L129 PetriNetUnfolder]: 23/66 cut-off events. [2021-06-10 21:15:18,739 INFO L130 PetriNetUnfolder]: For 136/151 co-relation queries the response was YES. [2021-06-10 21:15:18,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 66 events. 23/66 cut-off events. For 136/151 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 200 event pairs, 9 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 151. Up to 39 conditions per place. [2021-06-10 21:15:18,740 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2021-06-10 21:15:18,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 126 flow [2021-06-10 21:15:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:15:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:15:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-06-10 21:15:18,741 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7949579831932773 [2021-06-10 21:15:18,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-06-10 21:15:18,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-06-10 21:15:18,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-06-10 21:15:18,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,744 INFO L185 Difference]: Start difference. First operand has 36 places, 17 transitions, 74 flow. Second operand 5 states and 473 transitions. [2021-06-10 21:15:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 126 flow [2021-06-10 21:15:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 109 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-06-10 21:15:18,745 INFO L241 Difference]: Finished difference. Result has 35 places, 19 transitions, 88 flow [2021-06-10 21:15:18,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2021-06-10 21:15:18,745 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2021-06-10 21:15:18,745 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 88 flow [2021-06-10 21:15:18,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,745 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:15:18,746 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1245712628, now seen corresponding path program 1 times [2021-06-10 21:15:18,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534951170] [2021-06-10 21:15:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:15:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534951170] [2021-06-10 21:15:18,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:15:18,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852124259] [2021-06-10 21:15:18,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:15:18,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:15:18,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:15:18,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-06-10 21:15:18,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-06-10 21:15:18,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,806 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-06-10 21:15:18,806 INFO L130 PetriNetUnfolder]: For 81/120 co-relation queries the response was YES. [2021-06-10 21:15:18,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 40 events. 9/40 cut-off events. For 81/120 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 1 based on Foata normal form. 9/47 useless extension candidates. Maximal degree in co-relation 126. Up to 27 conditions per place. [2021-06-10 21:15:18,806 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 3 selfloop transitions, 5 changer transitions 10/29 dead transitions. [2021-06-10 21:15:18,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 182 flow [2021-06-10 21:15:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:15:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:15:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2021-06-10 21:15:18,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927170868347339 [2021-06-10 21:15:18,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2021-06-10 21:15:18,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2021-06-10 21:15:18,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2021-06-10 21:15:18,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,810 INFO L185 Difference]: Start difference. First operand has 35 places, 19 transitions, 88 flow. Second operand 6 states and 566 transitions. [2021-06-10 21:15:18,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 182 flow [2021-06-10 21:15:18,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 177 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-10 21:15:18,811 INFO L241 Difference]: Finished difference. Result has 39 places, 19 transitions, 107 flow [2021-06-10 21:15:18,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2021-06-10 21:15:18,811 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-06-10 21:15:18,812 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 107 flow [2021-06-10 21:15:18,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:15:18,812 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:15:18,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:15:18,812 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:15:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:15:18,812 INFO L82 PathProgramCache]: Analyzing trace with hash -37624608, now seen corresponding path program 1 times [2021-06-10 21:15:18,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:15:18,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313154801] [2021-06-10 21:15:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:15:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:15:18,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:15:18,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:15:18,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:15:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:15:18,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313154801] [2021-06-10 21:15:18,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:15:18,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:15:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022549918] [2021-06-10 21:15:18,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:15:18,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:15:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:15:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:15:18,864 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2021-06-10 21:15:18,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:15:18,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2021-06-10 21:15:18,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:15:18,888 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-06-10 21:15:18,888 INFO L130 PetriNetUnfolder]: For 56/71 co-relation queries the response was YES. [2021-06-10 21:15:18,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 20 events. 1/20 cut-off events. For 56/71 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 5/25 useless extension candidates. Maximal degree in co-relation 66. Up to 9 conditions per place. [2021-06-10 21:15:18,889 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-06-10 21:15:18,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 127 flow [2021-06-10 21:15:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:15:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:15:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2021-06-10 21:15:18,890 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7767106842737095 [2021-06-10 21:15:18,891 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2021-06-10 21:15:18,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2021-06-10 21:15:18,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:15:18,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2021-06-10 21:15:18,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,894 INFO L185 Difference]: Start difference. First operand has 39 places, 19 transitions, 107 flow. Second operand 7 states and 647 transitions. [2021-06-10 21:15:18,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 127 flow [2021-06-10 21:15:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 20 transitions, 101 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 21:15:18,896 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2021-06-10 21:15:18,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2021-06-10 21:15:18,897 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-06-10 21:15:18,897 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2021-06-10 21:15:18,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:15:18,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:15:18,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:15:18 BasicIcfg [2021-06-10 21:15:18,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:15:18,901 INFO L168 Benchmark]: Toolchain (without parser) took 3949.26 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 327.1 MB in the beginning and 190.5 MB in the end (delta: 136.5 MB). Peak memory consumption was 210.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:15:18,902 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 364.9 MB. Free memory is still 345.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:15:18,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.50 ms. Allocated memory is still 364.9 MB. Free memory was 326.9 MB in the beginning and 325.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-10 21:15:18,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 364.9 MB. Free memory was 325.7 MB in the beginning and 323.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:15:18,908 INFO L168 Benchmark]: Boogie Preprocessor took 13.41 ms. Allocated memory is still 364.9 MB. Free memory was 323.6 MB in the beginning and 322.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:15:18,908 INFO L168 Benchmark]: RCFGBuilder took 276.98 ms. Allocated memory is still 364.9 MB. Free memory was 322.6 MB in the beginning and 298.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:15:18,908 INFO L168 Benchmark]: TraceAbstraction took 3225.66 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 190.5 MB in the end (delta: 106.9 MB). Peak memory consumption was 182.4 MB. Max. memory is 16.0 GB. [2021-06-10 21:15:18,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 364.9 MB. Free memory is still 345.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 391.50 ms. Allocated memory is still 364.9 MB. Free memory was 326.9 MB in the beginning and 325.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 364.9 MB. Free memory was 325.7 MB in the beginning and 323.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.41 ms. Allocated memory is still 364.9 MB. Free memory was 323.6 MB in the beginning and 322.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 276.98 ms. Allocated memory is still 364.9 MB. Free memory was 322.6 MB in the beginning and 298.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3225.66 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 297.4 MB in the beginning and 190.5 MB in the end (delta: 106.9 MB). Peak memory consumption was 182.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2271.7ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1712 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 894, positive: 810, positive conditional: 0, positive unconditional: 810, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 602, positive: 561, positive conditional: 0, positive unconditional: 561, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 602, positive: 561, positive conditional: 0, positive unconditional: 561, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 602, positive: 552, positive conditional: 0, positive unconditional: 552, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 894, positive: 249, positive conditional: 0, positive unconditional: 249, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 602, unknown conditional: 0, unknown unconditional: 602] , Statistics on independence cache: Total cache size (in pairs): 896, Positive cache size: 855, Positive conditional cache size: 0, Positive unconditional cache size: 855, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3111.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 272.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2354.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 22 SDslu, 17 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=6, InterpolantAutomatonStates: 35, 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: 11.8ms SsaConstructionTime, 94.9ms SatisfiabilityAnalysisTime, 251.8ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...