/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:07:06,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:07:06,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:07:06,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:07:06,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:07:06,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:07:06,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:07:06,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:07:06,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:07:06,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:07:06,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:07:06,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:07:06,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:07:06,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:07:06,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:07:06,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:07:06,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:07:06,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:07:06,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:07:06,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:07:06,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:07:06,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:07:06,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:07:06,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:07:06,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:07:06,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:07:06,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:07:06,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:07:06,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:07:06,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:07:06,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:07:06,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:07:06,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:07:06,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:07:06,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:07:06,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:07:06,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:07:06,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:07:06,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:07:06,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:07:06,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:07:06,126 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-VariableLbe.epf [2021-03-24 11:07:06,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:07:06,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:07:06,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:07:06,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:07:06,164 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:07:06,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:07:06,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:07:06,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:07:06,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:07:06,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:07:06,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:07:06,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:07:06,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:07:06,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:07:06,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:07:06,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:07:06,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:07:06,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:07:06,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:07:06,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:07:06,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:07:06,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:07:06,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:07:06,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:07:06,476 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:07:06,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-03-24 11:07:06,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848c5f114/ad7558d0092b4b34a3cd8a316b41c0af/FLAG15bd187bf [2021-03-24 11:07:07,052 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:07:07,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-03-24 11:07:07,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848c5f114/ad7558d0092b4b34a3cd8a316b41c0af/FLAG15bd187bf [2021-03-24 11:07:07,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848c5f114/ad7558d0092b4b34a3cd8a316b41c0af [2021-03-24 11:07:07,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:07:07,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:07:07,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:07,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:07:07,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:07:07,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f09793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07, skipping insertion in model container [2021-03-24 11:07:07,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:07:07,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:07:07,566 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/safe029_tso.opt.i[949,962] [2021-03-24 11:07:07,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:07,761 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:07:07,771 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/safe029_tso.opt.i[949,962] [2021-03-24 11:07:07,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:07,870 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:07:07,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07 WrapperNode [2021-03-24 11:07:07,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:07,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:07,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:07:07,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:07:07,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:07,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:07:07,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:07:07,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:07:07,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (1/1) ... [2021-03-24 11:07:07,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:07:07,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:07:07,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:07:07,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:07:07,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (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 11:07:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:07:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:07:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:07:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:07:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:07:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:07:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:07:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:07:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:07:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:07:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:07:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:07:08,033 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 11:07:08,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:07:08,252 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:07:08,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:08 BoogieIcfgContainer [2021-03-24 11:07:08,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:07:08,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:07:08,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:07:08,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:07:08,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:07:07" (1/3) ... [2021-03-24 11:07:08,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c6725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:08, skipping insertion in model container [2021-03-24 11:07:08,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:07" (2/3) ... [2021-03-24 11:07:08,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c6725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:08, skipping insertion in model container [2021-03-24 11:07:08,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:08" (3/3) ... [2021-03-24 11:07:08,259 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2021-03-24 11:07:08,263 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:07:08,266 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:07:08,266 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:07:08,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,285 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:08,297 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:07:08,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 11:07:08,329 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:07:08,329 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:07:08,329 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:07:08,329 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:07:08,329 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:07:08,329 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:07:08,329 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:07:08,329 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:07:08,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2021-03-24 11:07:08,368 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-03-24 11:07:08,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:08,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 11:07:08,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 128 flow [2021-03-24 11:07:08,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 100 flow [2021-03-24 11:07:08,376 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:07:08,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 100 flow [2021-03-24 11:07:08,386 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 100 flow [2021-03-24 11:07:08,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 100 flow [2021-03-24 11:07:08,408 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-03-24 11:07:08,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:08,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-24 11:07:08,410 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-24 11:07:09,527 INFO L154 LiptonReduction]: Checked pairs total: 644 [2021-03-24 11:07:09,527 INFO L156 LiptonReduction]: Total number of compositions: 31 [2021-03-24 11:07:09,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1154 [2021-03-24 11:07:09,537 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-24 11:07:09,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:09,537 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,538 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,538 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash 769405957, now seen corresponding path program 1 times [2021-03-24 11:07:09,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696962139] [2021-03-24 11:07:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,725 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:07:09,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:09,737 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 11:07:09,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696962139] [2021-03-24 11:07:09,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:07:09,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86877065] [2021-03-24 11:07:09,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:07:09,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:07:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:07:09,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2021-03-24 11:07:09,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 11:07:09,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2021-03-24 11:07:09,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,800 INFO L129 PetriNetUnfolder]: 11/50 cut-off events. [2021-03-24 11:07:09,800 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:09,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 50 events. 11/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 137 event pairs, 3 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 79. Up to 17 conditions per place. [2021-03-24 11:07:09,803 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 5 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-03-24 11:07:09,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 66 flow [2021-03-24 11:07:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:07:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:07:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-24 11:07:09,820 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8407407407407408 [2021-03-24 11:07:09,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-24 11:07:09,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-24 11:07:09,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-24 11:07:09,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 11:07:09,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 11:07:09,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 11:07:09,842 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 3 states and 227 transitions. [2021-03-24 11:07:09,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 66 flow [2021-03-24 11:07:09,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:09,846 INFO L241 Difference]: Finished difference. Result has 25 places, 20 transitions, 74 flow [2021-03-24 11:07:09,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2021-03-24 11:07:09,848 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-24 11:07:09,848 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 74 flow [2021-03-24 11:07:09,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 11:07:09,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,848 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:07:09,849 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1918219436, now seen corresponding path program 1 times [2021-03-24 11:07:09,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969943230] [2021-03-24 11:07:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,915 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:07:09,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:09,920 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 11:07:09,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969943230] [2021-03-24 11:07:09,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:09,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278020221] [2021-03-24 11:07:09,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:09,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:09,924 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2021-03-24 11:07:09,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 11:07:09,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2021-03-24 11:07:09,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,959 INFO L129 PetriNetUnfolder]: 9/45 cut-off events. [2021-03-24 11:07:09,959 INFO L130 PetriNetUnfolder]: For 19/53 co-relation queries the response was YES. [2021-03-24 11:07:09,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 45 events. 9/45 cut-off events. For 19/53 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 120 event pairs, 1 based on Foata normal form. 2/45 useless extension candidates. Maximal degree in co-relation 113. Up to 16 conditions per place. [2021-03-24 11:07:09,961 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 5 selfloop transitions, 8 changer transitions 0/23 dead transitions. [2021-03-24 11:07:09,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 118 flow [2021-03-24 11:07:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:07:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:07:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2021-03-24 11:07:09,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8361111111111111 [2021-03-24 11:07:09,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2021-03-24 11:07:09,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2021-03-24 11:07:09,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2021-03-24 11:07:09,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 11:07:09,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,972 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,972 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 74 flow. Second operand 4 states and 301 transitions. [2021-03-24 11:07:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 118 flow [2021-03-24 11:07:09,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:09,977 INFO L241 Difference]: Finished difference. Result has 28 places, 23 transitions, 105 flow [2021-03-24 11:07:09,977 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2021-03-24 11:07:09,977 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2021-03-24 11:07:09,977 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 105 flow [2021-03-24 11:07:09,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 11:07:09,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,978 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:07:09,978 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1918219405, now seen corresponding path program 1 times [2021-03-24 11:07:09,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389155464] [2021-03-24 11:07:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,037 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:07:10,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:10,042 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 11:07:10,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389155464] [2021-03-24 11:07:10,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:10,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533958135] [2021-03-24 11:07:10,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:10,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:10,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:10,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2021-03-24 11:07:10,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 11:07:10,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2021-03-24 11:07:10,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,069 INFO L129 PetriNetUnfolder]: 7/40 cut-off events. [2021-03-24 11:07:10,070 INFO L130 PetriNetUnfolder]: For 49/116 co-relation queries the response was YES. [2021-03-24 11:07:10,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 40 events. 7/40 cut-off events. For 49/116 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 8/46 useless extension candidates. Maximal degree in co-relation 107. Up to 15 conditions per place. [2021-03-24 11:07:10,071 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 5 selfloop transitions, 9 changer transitions 0/24 dead transitions. [2021-03-24 11:07:10,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 140 flow [2021-03-24 11:07:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:07:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:07:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2021-03-24 11:07:10,073 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8361111111111111 [2021-03-24 11:07:10,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2021-03-24 11:07:10,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2021-03-24 11:07:10,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2021-03-24 11:07:10,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 11:07:10,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,076 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 105 flow. Second operand 4 states and 301 transitions. [2021-03-24 11:07:10,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 140 flow [2021-03-24 11:07:10,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:07:10,079 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 136 flow [2021-03-24 11:07:10,079 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-24 11:07:10,080 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2021-03-24 11:07:10,080 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 136 flow [2021-03-24 11:07:10,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 11:07:10,080 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,080 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:07:10,080 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 664739332, now seen corresponding path program 1 times [2021-03-24 11:07:10,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581307162] [2021-03-24 11:07:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,155 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:10,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:10,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,163 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 11:07:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581307162] [2021-03-24 11:07:10,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:10,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964510849] [2021-03-24 11:07:10,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:10,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:10,166 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-03-24 11:07:10,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 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 11:07:10,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-03-24 11:07:10,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,245 INFO L129 PetriNetUnfolder]: 20/79 cut-off events. [2021-03-24 11:07:10,246 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-03-24 11:07:10,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 79 events. 20/79 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 323 event pairs, 3 based on Foata normal form. 7/85 useless extension candidates. Maximal degree in co-relation 187. Up to 34 conditions per place. [2021-03-24 11:07:10,247 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 5 selfloop transitions, 3 changer transitions 15/37 dead transitions. [2021-03-24 11:07:10,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 200 flow [2021-03-24 11:07:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2021-03-24 11:07:10,250 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-24 11:07:10,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2021-03-24 11:07:10,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2021-03-24 11:07:10,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2021-03-24 11:07:10,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:10,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 11:07:10,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 11:07:10,253 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 136 flow. Second operand 7 states and 504 transitions. [2021-03-24 11:07:10,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 200 flow [2021-03-24 11:07:10,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-24 11:07:10,256 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 125 flow [2021-03-24 11:07:10,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2021-03-24 11:07:10,256 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2021-03-24 11:07:10,256 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 125 flow [2021-03-24 11:07:10,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 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 11:07:10,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,257 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:07:10,257 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1165728443, now seen corresponding path program 1 times [2021-03-24 11:07:10,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749417179] [2021-03-24 11:07:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,349 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:10,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:10,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,360 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 11:07:10,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749417179] [2021-03-24 11:07:10,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:10,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189551319] [2021-03-24 11:07:10,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:07:10,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:07:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:07:10,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 90 [2021-03-24 11:07:10,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 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 11:07:10,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 90 [2021-03-24 11:07:10,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,427 INFO L129 PetriNetUnfolder]: 5/33 cut-off events. [2021-03-24 11:07:10,427 INFO L130 PetriNetUnfolder]: For 49/57 co-relation queries the response was YES. [2021-03-24 11:07:10,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 33 events. 5/33 cut-off events. For 49/57 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 7/40 useless extension candidates. Maximal degree in co-relation 115. Up to 14 conditions per place. [2021-03-24 11:07:10,429 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-24 11:07:10,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 199 flow [2021-03-24 11:07:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 569 transitions. [2021-03-24 11:07:10,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2021-03-24 11:07:10,434 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 569 transitions. [2021-03-24 11:07:10,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 569 transitions. [2021-03-24 11:07:10,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 569 transitions. [2021-03-24 11:07:10,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 11:07:10,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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 11:07:10,438 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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 11:07:10,438 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 125 flow. Second operand 8 states and 569 transitions. [2021-03-24 11:07:10,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 28 transitions, 199 flow [2021-03-24 11:07:10,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 167 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 11:07:10,441 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-24 11:07:10,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-24 11:07:10,442 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 14 predicate places. [2021-03-24 11:07:10,442 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2021-03-24 11:07:10,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 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 11:07:10,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:07:10,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:07:10 BasicIcfg [2021-03-24 11:07:10,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:07:10,449 INFO L168 Benchmark]: Toolchain (without parser) took 3112.92 ms. Allocated memory is still 358.6 MB. Free memory was 322.0 MB in the beginning and 225.3 MB in the end (delta: 96.7 MB). Peak memory consumption was 98.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:10,450 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 340.0 MB in the beginning and 339.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:10,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.23 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 321.8 MB in the end (delta: 24.3 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:10,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 319.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:10,451 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 358.6 MB. Free memory was 319.7 MB in the beginning and 318.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:10,452 INFO L168 Benchmark]: RCFGBuilder took 298.29 ms. Allocated memory is still 358.6 MB. Free memory was 318.7 MB in the beginning and 297.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:10,454 INFO L168 Benchmark]: TraceAbstraction took 2190.94 ms. Allocated memory is still 358.6 MB. Free memory was 297.7 MB in the beginning and 225.3 MB in the end (delta: 72.4 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:10,459 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 358.6 MB. Free memory was 340.0 MB in the beginning and 339.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 536.23 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 321.8 MB in the end (delta: 24.3 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.85 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 319.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 358.6 MB. Free memory was 319.7 MB in the beginning and 318.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 298.29 ms. Allocated memory is still 358.6 MB. Free memory was 318.7 MB in the beginning and 297.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2190.94 ms. Allocated memory is still 358.6 MB. Free memory was 297.7 MB in the beginning and 225.3 MB in the end (delta: 72.4 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1141.0ms, 53 PlacesBefore, 23 PlacesAfterwards, 47 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 31 TotalNumberOfCompositions, 644 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 377, positive: 344, positive conditional: 0, positive unconditional: 344, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 229, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 229, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 377, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 229, unknown conditional: 0, unknown unconditional: 229] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2117.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 353.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1203.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 14 SDslu, 17 SDs, 0 SdLazy, 79 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 105.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 12.1ms SsaConstructionTime, 84.1ms SatisfiabilityAnalysisTime, 304.6ms InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...