/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/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:58:36,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:58:36,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:58:36,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:58:36,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:58:36,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:58:36,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:58:36,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:58:36,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:58:36,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:58:36,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:58:36,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:58:36,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:58:36,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:58:36,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:58:36,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:58:36,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:58:36,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:58:36,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:58:36,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:58:36,607 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 19:58:36,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:58:36,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:58:36,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:58:36,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:58:36,648 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:58:36,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:58:36,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:58:36,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:58:36,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:58:36,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:58:36,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:58:36,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:58:36,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:58:36,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:58:36,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:58:36,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:58:36,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:58:36,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:58:36,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:58:36,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:58:36,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:58:36,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:58:36,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:58:36,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:58:36,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:58:36,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:58:36,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:58:36,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:58:36,991 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:58:36,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2021-03-24 19:58:37,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb36193a/b89b31906aa540a190e0eda66f1c7767/FLAGf759b0143 [2021-03-24 19:58:37,808 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:58:37,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2021-03-24 19:58:37,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb36193a/b89b31906aa540a190e0eda66f1c7767/FLAGf759b0143 [2021-03-24 19:58:37,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb36193a/b89b31906aa540a190e0eda66f1c7767 [2021-03-24 19:58:37,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:58:37,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:58:37,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:58:37,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:58:37,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:58:37,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:58:37" (1/1) ... [2021-03-24 19:58:37,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365a9b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:37, skipping insertion in model container [2021-03-24 19:58:37,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:58:37" (1/1) ... [2021-03-24 19:58:37,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:58:37,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:58:38,031 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/safe035_pso.oepc.i[950,963] [2021-03-24 19:58:38,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:58:38,184 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:58:38,194 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/safe035_pso.oepc.i[950,963] [2021-03-24 19:58:38,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:58:38,317 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:58:38,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38 WrapperNode [2021-03-24 19:58:38,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:58:38,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:58:38,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:58:38,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:58:38,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:58:38,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:58:38,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:58:38,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:58:38,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (1/1) ... [2021-03-24 19:58:38,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:58:38,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:58:38,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:58:38,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:58:38,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (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 19:58:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:58:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:58:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:58:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:58:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:58:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:58:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:58:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:58:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:58:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:58:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:58:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:58:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:58:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:58:38,490 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 19:58:38,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:58:38,913 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:58:38,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:58:38 BoogieIcfgContainer [2021-03-24 19:58:38,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:58:38,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:58:38,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:58:38,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:58:38,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:58:37" (1/3) ... [2021-03-24 19:58:38,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a5e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:58:38, skipping insertion in model container [2021-03-24 19:58:38,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:58:38" (2/3) ... [2021-03-24 19:58:38,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a5e499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:58:38, skipping insertion in model container [2021-03-24 19:58:38,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:58:38" (3/3) ... [2021-03-24 19:58:38,922 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2021-03-24 19:58:38,927 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:58:38,931 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:58:38,931 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:58:38,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,982 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,983 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,983 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,990 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:58:38,993 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:58:39,010 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:58:39,039 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:58:39,040 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:58:39,040 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:58:39,040 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:58:39,040 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:58:39,040 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:58:39,040 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:58:39,040 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:58:39,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:58:39,098 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:58:39,098 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:58:39,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:58:39,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:58:39,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:58:39,119 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:58:39,131 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:58:39,134 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:58:39,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:58:39,167 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:58:39,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:58:39,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:58:39,170 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:58:40,833 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 19:58:41,014 INFO L154 LiptonReduction]: Checked pairs total: 1134 [2021-03-24 19:58:41,014 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 19:58:41,016 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1898 [2021-03-24 19:58:41,026 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:58:41,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:58:41,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:41,028 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:41,028 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2024649040, now seen corresponding path program 1 times [2021-03-24 19:58:41,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:41,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112629142] [2021-03-24 19:58:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:41,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,265 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:58:41,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:58:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:58:41,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112629142] [2021-03-24 19:58:41,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:41,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:58:41,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520763973] [2021-03-24 19:58:41,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:58:41,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:58:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:58:41,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-24 19:58:41,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 19:58:41,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:41,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-24 19:58:41,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:41,376 INFO L129 PetriNetUnfolder]: 19/76 cut-off events. [2021-03-24 19:58:41,376 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:58:41,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 76 events. 19/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 9 based on Foata normal form. 8/80 useless extension candidates. Maximal degree in co-relation 121. Up to 22 conditions per place. [2021-03-24 19:58:41,379 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 5 changer transitions 1/27 dead transitions. [2021-03-24 19:58:41,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 89 flow [2021-03-24 19:58:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:58:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:58:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-24 19:58:41,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8030973451327433 [2021-03-24 19:58:41,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-24 19:58:41,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-24 19:58:41,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:41,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-24 19:58:41,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 19:58:41,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 19:58:41,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 19:58:41,418 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 363 transitions. [2021-03-24 19:58:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 89 flow [2021-03-24 19:58:41,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:58:41,422 INFO L241 Difference]: Finished difference. Result has 35 places, 25 transitions, 86 flow [2021-03-24 19:58:41,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2021-03-24 19:58:41,424 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-24 19:58:41,424 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 86 flow [2021-03-24 19:58:41,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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 19:58:41,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:41,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:41,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:58:41,425 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2094090085, now seen corresponding path program 1 times [2021-03-24 19:58:41,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:41,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108540727] [2021-03-24 19:58:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:41,538 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:58:41,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:58:41,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:58:41,554 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 19:58:41,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108540727] [2021-03-24 19:58:41,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:41,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:58:41,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086243433] [2021-03-24 19:58:41,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:58:41,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:58:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:58:41,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:58:41,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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 19:58:41,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:41,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:58:41,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:41,680 INFO L129 PetriNetUnfolder]: 177/344 cut-off events. [2021-03-24 19:58:41,681 INFO L130 PetriNetUnfolder]: For 25/40 co-relation queries the response was YES. [2021-03-24 19:58:41,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 344 events. 177/344 cut-off events. For 25/40 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 1779 event pairs, 4 based on Foata normal form. 23/319 useless extension candidates. Maximal degree in co-relation 705. Up to 157 conditions per place. [2021-03-24 19:58:41,686 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 11 selfloop transitions, 9 changer transitions 2/40 dead transitions. [2021-03-24 19:58:41,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 160 flow [2021-03-24 19:58:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:58:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:58:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2021-03-24 19:58:41,689 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7699115044247787 [2021-03-24 19:58:41,689 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2021-03-24 19:58:41,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2021-03-24 19:58:41,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:41,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2021-03-24 19:58:41,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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 19:58:41,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 19:58:41,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 19:58:41,694 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 86 flow. Second operand 6 states and 522 transitions. [2021-03-24 19:58:41,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 160 flow [2021-03-24 19:58:41,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:58:41,697 INFO L241 Difference]: Finished difference. Result has 43 places, 33 transitions, 154 flow [2021-03-24 19:58:41,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2021-03-24 19:58:41,698 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-24 19:58:41,698 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 154 flow [2021-03-24 19:58:41,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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 19:58:41,698 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:41,699 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:41,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:58:41,699 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1049690798, now seen corresponding path program 1 times [2021-03-24 19:58:41,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:41,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565895819] [2021-03-24 19:58:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:41,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,768 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:58:41,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:58:41,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:41,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:41,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:58:41,788 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 19:58:41,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565895819] [2021-03-24 19:58:41,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:41,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:58:41,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174053928] [2021-03-24 19:58:41,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:58:41,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:41,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:58:41,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:58:41,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:58:41,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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 19:58:41,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:41,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:58:41,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:41,940 INFO L129 PetriNetUnfolder]: 151/317 cut-off events. [2021-03-24 19:58:41,940 INFO L130 PetriNetUnfolder]: For 597/947 co-relation queries the response was YES. [2021-03-24 19:58:41,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 317 events. 151/317 cut-off events. For 597/947 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1608 event pairs, 0 based on Foata normal form. 68/344 useless extension candidates. Maximal degree in co-relation 1173. Up to 195 conditions per place. [2021-03-24 19:58:41,943 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 10 selfloop transitions, 17 changer transitions 4/49 dead transitions. [2021-03-24 19:58:41,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 307 flow [2021-03-24 19:58:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:58:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:58:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 695 transitions. [2021-03-24 19:58:41,946 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7688053097345132 [2021-03-24 19:58:41,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 695 transitions. [2021-03-24 19:58:41,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 695 transitions. [2021-03-24 19:58:41,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:41,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 695 transitions. [2021-03-24 19:58:41,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 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 19:58:41,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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 19:58:41,956 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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 19:58:41,957 INFO L185 Difference]: Start difference. First operand has 43 places, 33 transitions, 154 flow. Second operand 8 states and 695 transitions. [2021-03-24 19:58:41,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 307 flow [2021-03-24 19:58:41,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 19:58:41,962 INFO L241 Difference]: Finished difference. Result has 54 places, 42 transitions, 281 flow [2021-03-24 19:58:41,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2021-03-24 19:58:41,962 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2021-03-24 19:58:41,963 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 281 flow [2021-03-24 19:58:41,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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 19:58:41,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:41,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:41,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:58:41,964 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash -724921500, now seen corresponding path program 1 times [2021-03-24 19:58:41,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:41,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503944295] [2021-03-24 19:58:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:42,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:58:42,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,043 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 19:58:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503944295] [2021-03-24 19:58:42,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:42,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:58:42,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805527955] [2021-03-24 19:58:42,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:58:42,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:58:42,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:58:42,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2021-03-24 19:58:42,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 19:58:42,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:42,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2021-03-24 19:58:42,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:42,119 INFO L129 PetriNetUnfolder]: 166/469 cut-off events. [2021-03-24 19:58:42,120 INFO L130 PetriNetUnfolder]: For 1771/2015 co-relation queries the response was YES. [2021-03-24 19:58:42,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 469 events. 166/469 cut-off events. For 1771/2015 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 3340 event pairs, 9 based on Foata normal form. 24/443 useless extension candidates. Maximal degree in co-relation 2074. Up to 252 conditions per place. [2021-03-24 19:58:42,125 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 9 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2021-03-24 19:58:42,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 324 flow [2021-03-24 19:58:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:58:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:58:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-24 19:58:42,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8790560471976401 [2021-03-24 19:58:42,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-24 19:58:42,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-24 19:58:42,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:42,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-24 19:58:42,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 19:58:42,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 19:58:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 19:58:42,131 INFO L185 Difference]: Start difference. First operand has 54 places, 42 transitions, 281 flow. Second operand 3 states and 298 transitions. [2021-03-24 19:58:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 324 flow [2021-03-24 19:58:42,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 294 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-24 19:58:42,153 INFO L241 Difference]: Finished difference. Result has 55 places, 43 transitions, 268 flow [2021-03-24 19:58:42,153 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2021-03-24 19:58:42,154 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2021-03-24 19:58:42,154 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 268 flow [2021-03-24 19:58:42,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 19:58:42,154 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:42,154 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:42,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:58:42,155 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1355345142, now seen corresponding path program 2 times [2021-03-24 19:58:42,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:42,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728919948] [2021-03-24 19:58:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:42,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,221 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:58:42,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:58:42,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:58:42,240 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 19:58:42,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728919948] [2021-03-24 19:58:42,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:42,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:58:42,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028367769] [2021-03-24 19:58:42,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:58:42,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:58:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:58:42,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:58:42,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 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 19:58:42,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:42,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:58:42,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:42,402 INFO L129 PetriNetUnfolder]: 233/501 cut-off events. [2021-03-24 19:58:42,402 INFO L130 PetriNetUnfolder]: For 2281/3306 co-relation queries the response was YES. [2021-03-24 19:58:42,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 501 events. 233/501 cut-off events. For 2281/3306 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 3111 event pairs, 0 based on Foata normal form. 152/586 useless extension candidates. Maximal degree in co-relation 2357. Up to 263 conditions per place. [2021-03-24 19:58:42,406 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 5 selfloop transitions, 21 changer transitions 6/51 dead transitions. [2021-03-24 19:58:42,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 396 flow [2021-03-24 19:58:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:58:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:58:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 859 transitions. [2021-03-24 19:58:42,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7601769911504425 [2021-03-24 19:58:42,409 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 859 transitions. [2021-03-24 19:58:42,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 859 transitions. [2021-03-24 19:58:42,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:42,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 859 transitions. [2021-03-24 19:58:42,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.9) internal successors, (859), 10 states have internal predecessors, (859), 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 19:58:42,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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 19:58:42,413 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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 19:58:42,413 INFO L185 Difference]: Start difference. First operand has 55 places, 43 transitions, 268 flow. Second operand 10 states and 859 transitions. [2021-03-24 19:58:42,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 396 flow [2021-03-24 19:58:42,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 389 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:58:42,425 INFO L241 Difference]: Finished difference. Result has 66 places, 45 transitions, 343 flow [2021-03-24 19:58:42,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=343, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2021-03-24 19:58:42,426 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2021-03-24 19:58:42,426 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 343 flow [2021-03-24 19:58:42,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 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 19:58:42,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:58:42,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:58:42,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:58:42,427 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:58:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:58:42,428 INFO L82 PathProgramCache]: Analyzing trace with hash -952003253, now seen corresponding path program 1 times [2021-03-24 19:58:42,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:58:42,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954510621] [2021-03-24 19:58:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:58:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:58:42,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:58:42,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:58:42,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:58:42,500 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:58:42,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:58:42,511 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 19:58:42,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954510621] [2021-03-24 19:58:42,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:58:42,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:58:42,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612551735] [2021-03-24 19:58:42,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:58:42,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:58:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:58:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:58:42,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2021-03-24 19:58:42,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 19:58:42,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:58:42,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2021-03-24 19:58:42,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:58:42,600 INFO L129 PetriNetUnfolder]: 216/629 cut-off events. [2021-03-24 19:58:42,600 INFO L130 PetriNetUnfolder]: For 2691/2772 co-relation queries the response was YES. [2021-03-24 19:58:42,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 629 events. 216/629 cut-off events. For 2691/2772 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 4979 event pairs, 2 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 2904. Up to 247 conditions per place. [2021-03-24 19:58:42,604 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-24 19:58:42,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 467 flow [2021-03-24 19:58:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:58:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:58:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-03-24 19:58:42,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7805309734513274 [2021-03-24 19:58:42,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-03-24 19:58:42,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-03-24 19:58:42,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:58:42,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-03-24 19:58:42,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 19:58:42,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 19:58:42,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 19:58:42,610 INFO L185 Difference]: Start difference. First operand has 66 places, 45 transitions, 343 flow. Second operand 5 states and 441 transitions. [2021-03-24 19:58:42,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 467 flow [2021-03-24 19:58:42,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 398 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-03-24 19:58:42,648 INFO L241 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2021-03-24 19:58:42,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2021-03-24 19:58:42,649 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2021-03-24 19:58:42,649 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2021-03-24 19:58:42,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 19:58:42,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:58:42,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:58:42 BasicIcfg [2021-03-24 19:58:42,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:58:42,654 INFO L168 Benchmark]: Toolchain (without parser) took 4780.32 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 233.5 MB in the beginning and 217.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 160.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,654 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:58:42,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.45 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 233.0 MB in the beginning and 295.4 MB in the end (delta: -62.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 331.4 MB. Free memory was 295.4 MB in the beginning and 293.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,657 INFO L168 Benchmark]: Boogie Preprocessor took 30.01 ms. Allocated memory is still 331.4 MB. Free memory was 293.8 MB in the beginning and 292.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,658 INFO L168 Benchmark]: RCFGBuilder took 508.96 ms. Allocated memory is still 331.4 MB. Free memory was 292.2 MB in the beginning and 270.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,660 INFO L168 Benchmark]: TraceAbstraction took 3736.05 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 269.6 MB in the beginning and 217.1 MB in the end (delta: 52.5 MB). Peak memory consumption was 121.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:58:42,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 443.45 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 233.0 MB in the beginning and 295.4 MB in the end (delta: -62.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.70 ms. Allocated memory is still 331.4 MB. Free memory was 295.4 MB in the beginning and 293.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.01 ms. Allocated memory is still 331.4 MB. Free memory was 293.8 MB in the beginning and 292.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 508.96 ms. Allocated memory is still 331.4 MB. Free memory was 292.2 MB in the beginning and 270.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3736.05 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 269.6 MB in the beginning and 217.1 MB in the end (delta: 52.5 MB). Peak memory consumption was 121.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1880.4ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 609, positive: 567, positive conditional: 0, positive unconditional: 567, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 517, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 517, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 517, positive: 486, positive conditional: 0, positive unconditional: 486, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 609, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 517, unknown conditional: 0, unknown unconditional: 517] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3614.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 860.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1981.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 37 SDslu, 29 SDs, 0 SdLazy, 129 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 205.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.1ms SsaConstructionTime, 132.5ms SatisfiabilityAnalysisTime, 444.5ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...