/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:56:23,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:56:23,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:56:23,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:56:23,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:56:23,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:56:23,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:56:23,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:56:23,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:56:23,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:56:23,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:56:23,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:56:23,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:56:23,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:56:23,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:56:23,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:56:23,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:56:23,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:56:23,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:56:23,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:56:23,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:56:23,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:56:23,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:56:23,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:56:23,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:56:23,382 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:56:23,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:56:23,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:56:23,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:56:23,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:56:23,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:56:23,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:56:23,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:56:23,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:56:23,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:56:23,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:56:23,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:56:23,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:56:23,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:56:23,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:56:23,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:56:23,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:56:23,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:56:23,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:56:23,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:56:23,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:56:23,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:56:23,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:56:23,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:56:23,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:56:23,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:56:23,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:56:23,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:56:23,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:56:23,728 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:56:23,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-24 19:56:23,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485bc411c/18b2acb1ef404ad9b26e31178c4b4121/FLAG49cb02601 [2021-03-24 19:56:24,536 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:56:24,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-24 19:56:24,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485bc411c/18b2acb1ef404ad9b26e31178c4b4121/FLAG49cb02601 [2021-03-24 19:56:24,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485bc411c/18b2acb1ef404ad9b26e31178c4b4121 [2021-03-24 19:56:24,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:56:24,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:56:24,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:24,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:56:24,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:56:24,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:24" (1/1) ... [2021-03-24 19:56:24,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107db9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:24, skipping insertion in model container [2021-03-24 19:56:24,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:24" (1/1) ... [2021-03-24 19:56:24,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:56:24,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:56:25,073 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/safe026_tso.opt.i[949,962] [2021-03-24 19:56:25,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:25,214 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:56:25,225 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/safe026_tso.opt.i[949,962] [2021-03-24 19:56:25,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:25,309 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:56:25,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25 WrapperNode [2021-03-24 19:56:25,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:25,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:25,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:56:25,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:56:25,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:25,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:56:25,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:56:25,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:56:25,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... [2021-03-24 19:56:25,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:56:25,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:56:25,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:56:25,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:56:25,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:56:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:56:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:56:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:56:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:56:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:56:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:56:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:56:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:56:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:56:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:56:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:56:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:56:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:56:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:56:25,448 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:56:25,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:56:25,730 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:56:25,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:25 BoogieIcfgContainer [2021-03-24 19:56:25,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:56:25,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:56:25,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:56:25,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:56:25,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:56:24" (1/3) ... [2021-03-24 19:56:25,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4781ac10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:25, skipping insertion in model container [2021-03-24 19:56:25,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:25" (2/3) ... [2021-03-24 19:56:25,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4781ac10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:25, skipping insertion in model container [2021-03-24 19:56:25,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:25" (3/3) ... [2021-03-24 19:56:25,738 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-03-24 19:56:25,742 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:56:25,746 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:56:25,747 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:56:25,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,771 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,772 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,773 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,773 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,782 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,783 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:25,786 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:56:25,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:56:25,816 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:56:25,816 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:56:25,816 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:56:25,817 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:56:25,817 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:56:25,817 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:56:25,817 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:56:25,817 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:56:25,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:56:25,856 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-24 19:56:25,856 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:25,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-24 19:56:25,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-24 19:56:25,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:25,864 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:56:25,874 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:25,877 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:25,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-24 19:56:25,904 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-24 19:56:25,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:25,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-24 19:56:25,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-24 19:56:27,416 INFO L154 LiptonReduction]: Checked pairs total: 784 [2021-03-24 19:56:27,416 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-24 19:56:27,418 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1555 [2021-03-24 19:56:27,430 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 19:56:27,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:27,430 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:27,431 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:27,431 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1769401119, now seen corresponding path program 1 times [2021-03-24 19:56:27,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:27,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908076987] [2021-03-24 19:56:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:27,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:27,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:27,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:27,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:27,706 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:27,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908076987] [2021-03-24 19:56:27,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:27,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:27,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304187960] [2021-03-24 19:56:27,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:27,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:27,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:27,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:27,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:56:27,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:27,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:56:27,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:27,797 INFO L129 PetriNetUnfolder]: 21/80 cut-off events. [2021-03-24 19:56:27,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:27,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 80 events. 21/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 270 event pairs, 5 based on Foata normal form. 5/78 useless extension candidates. Maximal degree in co-relation 127. Up to 37 conditions per place. [2021-03-24 19:56:27,801 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 6 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2021-03-24 19:56:27,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 81 flow [2021-03-24 19:56:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-24 19:56:27,816 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8477272727272728 [2021-03-24 19:56:27,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-24 19:56:27,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-24 19:56:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:27,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-24 19:56:27,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,835 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,837 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 4 states and 373 transitions. [2021-03-24 19:56:27,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 81 flow [2021-03-24 19:56:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:27,843 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 84 flow [2021-03-24 19:56:27,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-24 19:56:27,845 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-24 19:56:27,845 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 84 flow [2021-03-24 19:56:27,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,846 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:27,846 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:27,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:56:27,846 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash -986296276, now seen corresponding path program 1 times [2021-03-24 19:56:27,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:27,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720816392] [2021-03-24 19:56:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:27,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:27,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:27,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:27,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720816392] [2021-03-24 19:56:27,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:27,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:56:27,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860188583] [2021-03-24 19:56:27,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:56:27,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:56:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:56:27,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 110 [2021-03-24 19:56:27,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:27,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 110 [2021-03-24 19:56:27,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:27,947 INFO L129 PetriNetUnfolder]: 15/69 cut-off events. [2021-03-24 19:56:27,948 INFO L130 PetriNetUnfolder]: For 60/116 co-relation queries the response was YES. [2021-03-24 19:56:27,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 69 events. 15/69 cut-off events. For 60/116 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 229 event pairs, 7 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 155. Up to 28 conditions per place. [2021-03-24 19:56:27,949 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 7 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2021-03-24 19:56:27,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 126 flow [2021-03-24 19:56:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:56:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:56:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-24 19:56:27,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2021-03-24 19:56:27,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-24 19:56:27,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-24 19:56:27,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:27,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-24 19:56:27,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,953 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 84 flow. Second operand 3 states and 294 transitions. [2021-03-24 19:56:27,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 126 flow [2021-03-24 19:56:27,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:27,955 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 116 flow [2021-03-24 19:56:27,955 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-24 19:56:27,956 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-24 19:56:27,956 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 116 flow [2021-03-24 19:56:27,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:27,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:27,956 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:27,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:56:27,957 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash -412588155, now seen corresponding path program 1 times [2021-03-24 19:56:27,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:27,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658555474] [2021-03-24 19:56:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,013 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:28,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:28,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:28,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658555474] [2021-03-24 19:56:28,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:28,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:28,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980257012] [2021-03-24 19:56:28,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:28,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:28,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:28,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:28,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:28,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:28,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:28,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:28,129 INFO L129 PetriNetUnfolder]: 171/367 cut-off events. [2021-03-24 19:56:28,129 INFO L130 PetriNetUnfolder]: For 88/110 co-relation queries the response was YES. [2021-03-24 19:56:28,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 367 events. 171/367 cut-off events. For 88/110 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2162 event pairs, 32 based on Foata normal form. 25/363 useless extension candidates. Maximal degree in co-relation 803. Up to 162 conditions per place. [2021-03-24 19:56:28,133 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 12 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2021-03-24 19:56:28,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 192 flow [2021-03-24 19:56:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:56:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:56:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:56:28,160 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787012987012987 [2021-03-24 19:56:28,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:56:28,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:56:28,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:28,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:56:28,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,164 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 116 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:56:28,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 192 flow [2021-03-24 19:56:28,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:28,167 INFO L241 Difference]: Finished difference. Result has 45 places, 36 transitions, 190 flow [2021-03-24 19:56:28,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2021-03-24 19:56:28,167 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2021-03-24 19:56:28,168 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 190 flow [2021-03-24 19:56:28,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:28,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:28,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:56:28,168 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -501665634, now seen corresponding path program 1 times [2021-03-24 19:56:28,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:28,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691128737] [2021-03-24 19:56:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:28,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691128737] [2021-03-24 19:56:28,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:28,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540329751] [2021-03-24 19:56:28,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:28,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:28,228 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 110 [2021-03-24 19:56:28,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:28,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 110 [2021-03-24 19:56:28,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:28,301 INFO L129 PetriNetUnfolder]: 143/385 cut-off events. [2021-03-24 19:56:28,301 INFO L130 PetriNetUnfolder]: For 472/590 co-relation queries the response was YES. [2021-03-24 19:56:28,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 385 events. 143/385 cut-off events. For 472/590 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2673 event pairs, 49 based on Foata normal form. 31/365 useless extension candidates. Maximal degree in co-relation 1173. Up to 227 conditions per place. [2021-03-24 19:56:28,305 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 5 changer transitions 4/39 dead transitions. [2021-03-24 19:56:28,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 237 flow [2021-03-24 19:56:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2021-03-24 19:56:28,307 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-03-24 19:56:28,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2021-03-24 19:56:28,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2021-03-24 19:56:28,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:28,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2021-03-24 19:56:28,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,310 INFO L185 Difference]: Start difference. First operand has 45 places, 36 transitions, 190 flow. Second operand 4 states and 380 transitions. [2021-03-24 19:56:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 237 flow [2021-03-24 19:56:28,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:28,317 INFO L241 Difference]: Finished difference. Result has 48 places, 34 transitions, 191 flow [2021-03-24 19:56:28,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2021-03-24 19:56:28,317 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 19:56:28,317 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 191 flow [2021-03-24 19:56:28,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:28,318 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:28,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:56:28,318 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 986680036, now seen corresponding path program 1 times [2021-03-24 19:56:28,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:28,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642345174] [2021-03-24 19:56:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,382 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:28,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:28,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:28,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642345174] [2021-03-24 19:56:28,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:28,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:56:28,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987123255] [2021-03-24 19:56:28,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:56:28,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:28,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:56:28,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:56:28,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:28,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:28,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:28,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:28,527 INFO L129 PetriNetUnfolder]: 112/263 cut-off events. [2021-03-24 19:56:28,527 INFO L130 PetriNetUnfolder]: For 496/741 co-relation queries the response was YES. [2021-03-24 19:56:28,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 263 events. 112/263 cut-off events. For 496/741 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1430 event pairs, 3 based on Foata normal form. 56/296 useless extension candidates. Maximal degree in co-relation 988. Up to 149 conditions per place. [2021-03-24 19:56:28,529 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 10 selfloop transitions, 18 changer transitions 5/50 dead transitions. [2021-03-24 19:56:28,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 348 flow [2021-03-24 19:56:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:56:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:56:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 780 transitions. [2021-03-24 19:56:28,532 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-03-24 19:56:28,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 780 transitions. [2021-03-24 19:56:28,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 780 transitions. [2021-03-24 19:56:28,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:28,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 780 transitions. [2021-03-24 19:56:28,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,537 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,537 INFO L185 Difference]: Start difference. First operand has 48 places, 34 transitions, 191 flow. Second operand 9 states and 780 transitions. [2021-03-24 19:56:28,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 348 flow [2021-03-24 19:56:28,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 332 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:28,542 INFO L241 Difference]: Finished difference. Result has 57 places, 42 transitions, 298 flow [2021-03-24 19:56:28,542 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2021-03-24 19:56:28,542 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-24 19:56:28,542 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 298 flow [2021-03-24 19:56:28,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,543 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:28,543 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:28,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:56:28,543 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash -318285921, now seen corresponding path program 1 times [2021-03-24 19:56:28,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:28,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061832376] [2021-03-24 19:56:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,615 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:56:28,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:56:28,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:28,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061832376] [2021-03-24 19:56:28,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:28,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:56:28,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531601143] [2021-03-24 19:56:28,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:56:28,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:28,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:56:28,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:56:28,635 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-24 19:56:28,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:28,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-24 19:56:28,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:28,774 INFO L129 PetriNetUnfolder]: 91/230 cut-off events. [2021-03-24 19:56:28,774 INFO L130 PetriNetUnfolder]: For 1344/1866 co-relation queries the response was YES. [2021-03-24 19:56:28,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 230 events. 91/230 cut-off events. For 1344/1866 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1275 event pairs, 1 based on Foata normal form. 71/278 useless extension candidates. Maximal degree in co-relation 1211. Up to 132 conditions per place. [2021-03-24 19:56:28,777 INFO L132 encePairwiseOnDemand]: 102/110 looper letters, 5 selfloop transitions, 22 changer transitions 6/50 dead transitions. [2021-03-24 19:56:28,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 50 transitions, 432 flow [2021-03-24 19:56:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 19:56:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 19:56:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 943 transitions. [2021-03-24 19:56:28,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7793388429752066 [2021-03-24 19:56:28,779 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 943 transitions. [2021-03-24 19:56:28,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 943 transitions. [2021-03-24 19:56:28,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:28,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 943 transitions. [2021-03-24 19:56:28,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.72727272727273) internal successors, (943), 11 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,786 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 298 flow. Second operand 11 states and 943 transitions. [2021-03-24 19:56:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 50 transitions, 432 flow [2021-03-24 19:56:28,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 390 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 19:56:28,793 INFO L241 Difference]: Finished difference. Result has 67 places, 44 transitions, 344 flow [2021-03-24 19:56:28,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=344, PETRI_PLACES=67, PETRI_TRANSITIONS=44} [2021-03-24 19:56:28,793 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2021-03-24 19:56:28,793 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 44 transitions, 344 flow [2021-03-24 19:56:28,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:28,794 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:28,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:56:28,794 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:28,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1492256644, now seen corresponding path program 1 times [2021-03-24 19:56:28,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:28,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2622966] [2021-03-24 19:56:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,860 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:28,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:28,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2622966] [2021-03-24 19:56:28,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:28,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:28,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171906435] [2021-03-24 19:56:28,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:28,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:28,870 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-24 19:56:28,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 44 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:28,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-24 19:56:28,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:28,926 INFO L129 PetriNetUnfolder]: 141/383 cut-off events. [2021-03-24 19:56:28,926 INFO L130 PetriNetUnfolder]: For 2089/2295 co-relation queries the response was YES. [2021-03-24 19:56:28,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 383 events. 141/383 cut-off events. For 2089/2295 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 2613 event pairs, 0 based on Foata normal form. 6/343 useless extension candidates. Maximal degree in co-relation 1886. Up to 183 conditions per place. [2021-03-24 19:56:28,929 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 4 selfloop transitions, 3 changer transitions 21/48 dead transitions. [2021-03-24 19:56:28,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 48 transitions, 393 flow [2021-03-24 19:56:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:56:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:56:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2021-03-24 19:56:28,931 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.843939393939394 [2021-03-24 19:56:28,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2021-03-24 19:56:28,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2021-03-24 19:56:28,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:28,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2021-03-24 19:56:28,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,934 INFO L185 Difference]: Start difference. First operand has 67 places, 44 transitions, 344 flow. Second operand 6 states and 557 transitions. [2021-03-24 19:56:28,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 48 transitions, 393 flow [2021-03-24 19:56:28,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 322 flow, removed 14 selfloop flow, removed 10 redundant places. [2021-03-24 19:56:28,946 INFO L241 Difference]: Finished difference. Result has 64 places, 27 transitions, 160 flow [2021-03-24 19:56:28,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2021-03-24 19:56:28,946 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 19:56:28,946 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 160 flow [2021-03-24 19:56:28,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:28,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:28,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:28,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:56:28,947 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1850539098, now seen corresponding path program 2 times [2021-03-24 19:56:28,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:28,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497152121] [2021-03-24 19:56:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:28,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:28,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:28,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:28,996 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:56:28,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:56:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:29,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497152121] [2021-03-24 19:56:29,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:29,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88626109] [2021-03-24 19:56:29,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:29,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:29,008 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 110 [2021-03-24 19:56:29,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:29,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:29,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 110 [2021-03-24 19:56:29,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:29,027 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-24 19:56:29,027 INFO L130 PetriNetUnfolder]: For 65/70 co-relation queries the response was YES. [2021-03-24 19:56:29,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 29 events. 5/29 cut-off events. For 65/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 4/32 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2021-03-24 19:56:29,028 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:56:29,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 26 transitions, 164 flow [2021-03-24 19:56:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:56:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:56:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-24 19:56:29,029 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8054545454545454 [2021-03-24 19:56:29,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-24 19:56:29,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-24 19:56:29,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:29,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-24 19:56:29,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:29,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:29,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:29,033 INFO L185 Difference]: Start difference. First operand has 64 places, 27 transitions, 160 flow. Second operand 5 states and 443 transitions. [2021-03-24 19:56:29,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 26 transitions, 164 flow [2021-03-24 19:56:29,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 100 flow, removed 10 selfloop flow, removed 20 redundant places. [2021-03-24 19:56:29,034 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-24 19:56:29,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-24 19:56:29,035 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-24 19:56:29,035 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-24 19:56:29,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:29,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:56:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:56:29 BasicIcfg [2021-03-24 19:56:29,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:56:29,041 INFO L168 Benchmark]: Toolchain (without parser) took 4236.32 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 336.5 MB in the beginning and 264.8 MB in the end (delta: 71.7 MB). Peak memory consumption was 147.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,041 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 373.3 MB. Free memory is still 354.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:56:29,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.29 ms. Allocated memory is still 373.3 MB. Free memory was 336.3 MB in the beginning and 335.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 373.3 MB. Free memory was 335.2 MB in the beginning and 333.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,044 INFO L168 Benchmark]: Boogie Preprocessor took 18.85 ms. Allocated memory is still 373.3 MB. Free memory was 333.1 MB in the beginning and 331.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,046 INFO L168 Benchmark]: RCFGBuilder took 368.39 ms. Allocated memory is still 373.3 MB. Free memory was 331.0 MB in the beginning and 307.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,046 INFO L168 Benchmark]: TraceAbstraction took 3305.32 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.8 MB in the beginning and 264.8 MB in the end (delta: 42.0 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:29,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 373.3 MB. Free memory is still 354.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 503.29 ms. Allocated memory is still 373.3 MB. Free memory was 336.3 MB in the beginning and 335.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 373.3 MB. Free memory was 335.2 MB in the beginning and 333.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.85 ms. Allocated memory is still 373.3 MB. Free memory was 333.1 MB in the beginning and 331.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 368.39 ms. Allocated memory is still 373.3 MB. Free memory was 331.0 MB in the beginning and 307.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3305.32 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.8 MB in the beginning and 264.8 MB in the end (delta: 42.0 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1538.9ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 618, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 506, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 506, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 506, positive: 481, positive conditional: 0, positive unconditional: 481, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 618, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 506, unknown conditional: 0, unknown unconditional: 506] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3223.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 759.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1608.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 40 SDslu, 43 SDs, 0 SdLazy, 145 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 213.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=6, InterpolantAutomatonStates: 49, 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: 29.3ms SsaConstructionTime, 173.9ms SatisfiabilityAnalysisTime, 465.7ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...