/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:00:50,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:00:50,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:00:50,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:00:50,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:00:50,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:00:50,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:00:50,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:00:50,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:00:50,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:00:50,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:00:50,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:00:50,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:00:50,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:00:50,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:00:50,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:00:50,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:00:50,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:00:50,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:00:50,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:00:50,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:00:50,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:00:50,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:00:50,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:00:50,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:00:50,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:00:50,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:00:50,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:00:50,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:00:50,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:00:50,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:00:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:00:50,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:00:50,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:00:50,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:00:50,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:00:50,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:00:50,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:00:50,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:00:50,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:00:50,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:00:50,143 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-RepeatedVariableLbe.epf [2021-03-25 05:00:50,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:00:50,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:00:50,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:00:50,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:00:50,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:00:50,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:00:50,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:00:50,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:00:50,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:00:50,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:00:50,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:00:50,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:00:50,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:00:50,181 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:00:50,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:00:50,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:00:50,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:00:50,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:00:50,465 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:00:50,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-03-25 05:00:50,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847dc8e00/1bcbc7ea33444c52bf879d144148acb4/FLAG94d2f069b [2021-03-25 05:00:51,067 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:00:51,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-03-25 05:00:51,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847dc8e00/1bcbc7ea33444c52bf879d144148acb4/FLAG94d2f069b [2021-03-25 05:00:51,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847dc8e00/1bcbc7ea33444c52bf879d144148acb4 [2021-03-25 05:00:51,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:00:51,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:00:51,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:51,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:00:51,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:00:51,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:51,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68139177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51, skipping insertion in model container [2021-03-25 05:00:51,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:51,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:00:51,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:00:51,718 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/safe009_pso.oepc.i[950,963] [2021-03-25 05:00:51,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:51,849 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:00:51,856 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/safe009_pso.oepc.i[950,963] [2021-03-25 05:00:51,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:51,952 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:00:51,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51 WrapperNode [2021-03-25 05:00:51,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:51,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:51,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:00:51,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:00:51,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:51,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:51,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:52,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:00:52,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:00:52,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:00:52,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (1/1) ... [2021-03-25 05:00:52,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:00:52,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:00:52,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:00:52,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:00:52,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (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 [2021-03-25 05:00:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:00:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:00:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:00:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:00:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:00:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:00:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:00:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:00:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:00:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:00:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:00:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:00:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:00:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:00:52,191 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:00:52,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:00:52,484 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:00:52,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:52 BoogieIcfgContainer [2021-03-25 05:00:52,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:00:52,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:00:52,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:00:52,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:00:52,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:00:51" (1/3) ... [2021-03-25 05:00:52,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c580ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:52, skipping insertion in model container [2021-03-25 05:00:52,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:51" (2/3) ... [2021-03-25 05:00:52,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c580ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:52, skipping insertion in model container [2021-03-25 05:00:52,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:52" (3/3) ... [2021-03-25 05:00:52,490 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2021-03-25 05:00:52,495 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:00:52,498 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:00:52,499 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:00:52,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:52,542 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:00:52,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:00:52,578 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:00:52,578 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:00:52,578 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:00:52,579 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:00:52,579 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:00:52,579 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:00:52,579 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:00:52,579 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:00:52,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:00:52,629 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 05:00:52,629 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:52,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:00:52,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:00:52,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:52,645 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:52,652 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:52,655 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:52,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:52,686 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 05:00:52,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:52,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:00:52,689 INFO L142 LiptonReduction]: Number of co-enabled transitions 812 [2021-03-25 05:00:53,607 INFO L154 LiptonReduction]: Checked pairs total: 861 [2021-03-25 05:00:53,607 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 05:00:53,609 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 965 [2021-03-25 05:00:53,614 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:00:53,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:53,614 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:53,615 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:53,615 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:53,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1640288609, now seen corresponding path program 1 times [2021-03-25 05:00:53,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:53,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421006686] [2021-03-25 05:00:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:53,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:53,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:53,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:53,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:53,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421006686] [2021-03-25 05:00:53,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:53,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:53,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575442116] [2021-03-25 05:00:53,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:53,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:53,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:53,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:53,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 110 [2021-03-25 05:00:53,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-03-25 05:00:53,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:53,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 110 [2021-03-25 05:00:53,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:53,802 INFO L129 PetriNetUnfolder]: 12/48 cut-off events. [2021-03-25 05:00:53,802 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:53,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 48 events. 12/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 2 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 72. Up to 25 conditions per place. [2021-03-25 05:00:53,803 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 5 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 05:00:53,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 73 flow [2021-03-25 05:00:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2021-03-25 05:00:53,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-03-25 05:00:53,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2021-03-25 05:00:53,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2021-03-25 05:00:53,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:53,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2021-03-25 05:00:53,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-03-25 05:00:53,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:53,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:53,820 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 297 transitions. [2021-03-25 05:00:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 73 flow [2021-03-25 05:00:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:00:53,823 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 67 flow [2021-03-25 05:00:53,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2021-03-25 05:00:53,825 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:00:53,825 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:53,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 23 transitions, 67 flow [2021-03-25 05:00:53,825 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 23 transitions, 67 flow [2021-03-25 05:00:53,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 23 transitions, 67 flow [2021-03-25 05:00:53,829 INFO L129 PetriNetUnfolder]: 3/29 cut-off events. [2021-03-25 05:00:53,829 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:00:53,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 29 events. 3/29 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 39. Up to 10 conditions per place. [2021-03-25 05:00:53,829 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-25 05:00:54,173 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:00:54,347 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:00:54,407 INFO L154 LiptonReduction]: Checked pairs total: 318 [2021-03-25 05:00:54,407 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:00:54,407 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 582 [2021-03-25 05:00:54,408 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2021-03-25 05:00:54,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-03-25 05:00:54,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,408 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:00:54,409 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash -690661176, now seen corresponding path program 1 times [2021-03-25 05:00:54,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283607185] [2021-03-25 05:00:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:54,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283607185] [2021-03-25 05:00:54,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:54,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209876172] [2021-03-25 05:00:54,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:54,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:54,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2021-03-25 05:00:54,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:00:54,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2021-03-25 05:00:54,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,459 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-25 05:00:54,459 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 05:00:54,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 24 events. 3/24 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2021-03-25 05:00:54,460 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2021-03-25 05:00:54,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 63 flow [2021-03-25 05:00:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-25 05:00:54,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8898550724637682 [2021-03-25 05:00:54,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2021-03-25 05:00:54,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,464 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 307 transitions. [2021-03-25 05:00:54,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 63 flow [2021-03-25 05:00:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:00:54,465 INFO L241 Difference]: Finished difference. Result has 28 places, 18 transitions, 62 flow [2021-03-25 05:00:54,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2021-03-25 05:00:54,466 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2021-03-25 05:00:54,466 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,466 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 18 transitions, 62 flow [2021-03-25 05:00:54,466 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 18 transitions, 62 flow [2021-03-25 05:00:54,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 18 transitions, 62 flow [2021-03-25 05:00:54,469 INFO L129 PetriNetUnfolder]: 3/23 cut-off events. [2021-03-25 05:00:54,469 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 05:00:54,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 1 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 39. Up to 10 conditions per place. [2021-03-25 05:00:54,469 INFO L142 LiptonReduction]: Number of co-enabled transitions 118 [2021-03-25 05:00:54,470 INFO L154 LiptonReduction]: Checked pairs total: 73 [2021-03-25 05:00:54,470 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:54,471 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 05:00:54,471 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 62 flow [2021-03-25 05:00:54,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:00:54,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,472 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:00:54,472 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2138357994, now seen corresponding path program 1 times [2021-03-25 05:00:54,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004919670] [2021-03-25 05:00:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004919670] [2021-03-25 05:00:54,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:54,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172033077] [2021-03-25 05:00:54,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:54,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:54,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:54,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 115 [2021-03-25 05:00:54,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-03-25 05:00:54,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 115 [2021-03-25 05:00:54,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,551 INFO L129 PetriNetUnfolder]: 6/41 cut-off events. [2021-03-25 05:00:54,552 INFO L130 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2021-03-25 05:00:54,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 41 events. 6/41 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 123 event pairs, 0 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 88. Up to 16 conditions per place. [2021-03-25 05:00:54,552 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 5 selfloop transitions, 4 changer transitions 1/21 dead transitions. [2021-03-25 05:00:54,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 95 flow [2021-03-25 05:00:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 05:00:54,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-03-25 05:00:54,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 05:00:54,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 05:00:54,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 05:00:54,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-25 05:00:54,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2021-03-25 05:00:54,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2021-03-25 05:00:54,557 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 62 flow. Second operand 4 states and 391 transitions. [2021-03-25 05:00:54,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 95 flow [2021-03-25 05:00:54,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:00:54,558 INFO L241 Difference]: Finished difference. Result has 30 places, 18 transitions, 71 flow [2021-03-25 05:00:54,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2021-03-25 05:00:54,558 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-25 05:00:54,558 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,558 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 18 transitions, 71 flow [2021-03-25 05:00:54,558 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 18 transitions, 71 flow [2021-03-25 05:00:54,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 71 flow [2021-03-25 05:00:54,561 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 05:00:54,561 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-03-25 05:00:54,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 27 events. 3/27 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 1 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2021-03-25 05:00:54,562 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-25 05:00:54,563 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-25 05:00:54,563 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:54,563 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 05:00:54,563 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 71 flow [2021-03-25 05:00:54,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2021-03-25 05:00:54,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:00:54,564 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2138360784, now seen corresponding path program 2 times [2021-03-25 05:00:54,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200148477] [2021-03-25 05:00:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200148477] [2021-03-25 05:00:54,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:00:54,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189577792] [2021-03-25 05:00:54,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:54,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:54,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:54,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2021-03-25 05:00:54,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:00:54,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2021-03-25 05:00:54,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,597 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 05:00:54,597 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-03-25 05:00:54,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 27 events. 3/27 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 05:00:54,597 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2021-03-25 05:00:54,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 18 transitions, 77 flow [2021-03-25 05:00:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-25 05:00:54,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8898550724637682 [2021-03-25 05:00:54,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-25 05:00:54,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2021-03-25 05:00:54,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,601 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 71 flow. Second operand 3 states and 307 transitions. [2021-03-25 05:00:54,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 18 transitions, 77 flow [2021-03-25 05:00:54,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 65 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 05:00:54,602 INFO L241 Difference]: Finished difference. Result has 29 places, 18 transitions, 67 flow [2021-03-25 05:00:54,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2021-03-25 05:00:54,602 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:00:54,602 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,602 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 18 transitions, 67 flow [2021-03-25 05:00:54,602 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 18 transitions, 67 flow [2021-03-25 05:00:54,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 67 flow [2021-03-25 05:00:54,605 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 05:00:54,605 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2021-03-25 05:00:54,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 27 events. 3/27 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 1 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2021-03-25 05:00:54,606 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 05:00:54,607 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-25 05:00:54,607 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:54,607 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 05:00:54,607 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 67 flow [2021-03-25 05:00:54,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:00:54,608 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,608 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:00:54,608 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1753153210, now seen corresponding path program 1 times [2021-03-25 05:00:54,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223250725] [2021-03-25 05:00:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:54,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223250725] [2021-03-25 05:00:54,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:54,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343966989] [2021-03-25 05:00:54,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:54,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:54,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 115 [2021-03-25 05:00:54,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 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) [2021-03-25 05:00:54,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 115 [2021-03-25 05:00:54,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,657 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 05:00:54,657 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 05:00:54,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 33 events. 2/33 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 69. Up to 10 conditions per place. [2021-03-25 05:00:54,657 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 5 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-25 05:00:54,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 86 flow [2021-03-25 05:00:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2021-03-25 05:00:54,661 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-03-25 05:00:54,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2021-03-25 05:00:54,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2021-03-25 05:00:54,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2021-03-25 05:00:54,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:00:54,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-25 05:00:54,663 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 67 flow. Second operand 3 states and 305 transitions. [2021-03-25 05:00:54,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 86 flow [2021-03-25 05:00:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:00:54,664 INFO L241 Difference]: Finished difference. Result has 30 places, 18 transitions, 74 flow [2021-03-25 05:00:54,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2021-03-25 05:00:54,664 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-25 05:00:54,664 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,664 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 18 transitions, 74 flow [2021-03-25 05:00:54,664 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 18 transitions, 74 flow [2021-03-25 05:00:54,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 74 flow [2021-03-25 05:00:54,667 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-25 05:00:54,667 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 05:00:54,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 26 events. 0/26 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 05:00:54,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 05:00:54,669 INFO L154 LiptonReduction]: Checked pairs total: 79 [2021-03-25 05:00:54,669 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:54,669 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 05:00:54,669 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 74 flow [2021-03-25 05:00:54,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 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) [2021-03-25 05:00:54,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,670 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:00:54,670 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1177466049, now seen corresponding path program 1 times [2021-03-25 05:00:54,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729176114] [2021-03-25 05:00:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,742 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:54,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729176114] [2021-03-25 05:00:54,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:54,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618431543] [2021-03-25 05:00:54,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:54,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:54,754 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 115 [2021-03-25 05:00:54,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:54,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 115 [2021-03-25 05:00:54,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,784 INFO L129 PetriNetUnfolder]: 6/46 cut-off events. [2021-03-25 05:00:54,785 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-03-25 05:00:54,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 46 events. 6/46 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 4 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 113. Up to 16 conditions per place. [2021-03-25 05:00:54,785 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 3 selfloop transitions, 4 changer transitions 6/22 dead transitions. [2021-03-25 05:00:54,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 124 flow [2021-03-25 05:00:54,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:00:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:00:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-03-25 05:00:54,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7965217391304348 [2021-03-25 05:00:54,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-03-25 05:00:54,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-03-25 05:00:54,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-03-25 05:00:54,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2021-03-25 05:00:54,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2021-03-25 05:00:54,790 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2021-03-25 05:00:54,790 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 74 flow. Second operand 5 states and 458 transitions. [2021-03-25 05:00:54,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 124 flow [2021-03-25 05:00:54,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 114 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:00:54,794 INFO L241 Difference]: Finished difference. Result has 35 places, 16 transitions, 74 flow [2021-03-25 05:00:54,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=16} [2021-03-25 05:00:54,794 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 05:00:54,795 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,795 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 16 transitions, 74 flow [2021-03-25 05:00:54,795 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 16 transitions, 74 flow [2021-03-25 05:00:54,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 16 transitions, 74 flow [2021-03-25 05:00:54,799 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 05:00:54,799 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 05:00:54,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 18 events. 0/18 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:00:54,800 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 05:00:54,843 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-25 05:00:54,843 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:54,844 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-25 05:00:54,847 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 14 transitions, 70 flow [2021-03-25 05:00:54,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:54,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,848 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:00:54,848 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1194540549, now seen corresponding path program 1 times [2021-03-25 05:00:54,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068022049] [2021-03-25 05:00:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:54,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:54,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:54,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:54,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068022049] [2021-03-25 05:00:54,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:54,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:54,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084367014] [2021-03-25 05:00:54,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:54,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:54,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:54,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2021-03-25 05:00:54,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 14 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-03-25 05:00:54,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:54,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2021-03-25 05:00:54,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:54,930 INFO L129 PetriNetUnfolder]: 16/44 cut-off events. [2021-03-25 05:00:54,931 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-03-25 05:00:54,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 44 events. 16/44 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 7 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 129. Up to 34 conditions per place. [2021-03-25 05:00:54,931 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2021-03-25 05:00:54,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 17 transitions, 98 flow [2021-03-25 05:00:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2021-03-25 05:00:54,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-03-25 05:00:54,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2021-03-25 05:00:54,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2021-03-25 05:00:54,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:54,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2021-03-25 05:00:54,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-03-25 05:00:54,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-25 05:00:54,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-03-25 05:00:54,942 INFO L185 Difference]: Start difference. First operand has 33 places, 14 transitions, 70 flow. Second operand 3 states and 297 transitions. [2021-03-25 05:00:54,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 17 transitions, 98 flow [2021-03-25 05:00:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 76 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-25 05:00:54,944 INFO L241 Difference]: Finished difference. Result has 29 places, 16 transitions, 70 flow [2021-03-25 05:00:54,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2021-03-25 05:00:54,944 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:00:54,944 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:54,944 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 05:00:54,945 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 05:00:54,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 16 transitions, 70 flow [2021-03-25 05:00:54,954 INFO L129 PetriNetUnfolder]: 12/38 cut-off events. [2021-03-25 05:00:54,954 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-25 05:00:54,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 38 events. 12/38 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 7 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 105. Up to 28 conditions per place. [2021-03-25 05:00:54,954 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 05:00:54,985 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:00:54,985 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:00:54,985 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-03-25 05:00:54,986 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 72 flow [2021-03-25 05:00:54,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-03-25 05:00:54,986 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:54,986 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:54,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:00:54,986 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1196585402, now seen corresponding path program 1 times [2021-03-25 05:00:54,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:54,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011788326] [2021-03-25 05:00:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:55,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:55,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:55,013 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:00:55,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:00:55,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:55,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:55,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011788326] [2021-03-25 05:00:55,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:55,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:55,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208336261] [2021-03-25 05:00:55,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:55,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:55,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-03-25 05:00:55,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-25 05:00:55,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:55,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-03-25 05:00:55,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:55,033 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-25 05:00:55,033 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2021-03-25 05:00:55,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 29 events. 6/29 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 1 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 92. Up to 18 conditions per place. [2021-03-25 05:00:55,034 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 2 selfloop transitions, 5 changer transitions 3/19 dead transitions. [2021-03-25 05:00:55,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 109 flow [2021-03-25 05:00:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2021-03-25 05:00:55,035 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.836864406779661 [2021-03-25 05:00:55,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2021-03-25 05:00:55,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2021-03-25 05:00:55,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:55,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2021-03-25 05:00:55,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:00:55,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:00:55,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:00:55,037 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 72 flow. Second operand 4 states and 395 transitions. [2021-03-25 05:00:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 109 flow [2021-03-25 05:00:55,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:00:55,038 INFO L241 Difference]: Finished difference. Result has 32 places, 16 transitions, 87 flow [2021-03-25 05:00:55,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=32, PETRI_TRANSITIONS=16} [2021-03-25 05:00:55,038 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-25 05:00:55,038 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:55,038 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 16 transitions, 87 flow [2021-03-25 05:00:55,038 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 16 transitions, 87 flow [2021-03-25 05:00:55,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 16 transitions, 87 flow [2021-03-25 05:00:55,040 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 05:00:55,040 INFO L130 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2021-03-25 05:00:55,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 21 events. 2/21 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 1 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2021-03-25 05:00:55,041 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 05:00:55,133 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:00:55,133 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:55,133 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 95 [2021-03-25 05:00:55,137 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 86 flow [2021-03-25 05:00:55,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-25 05:00:55,138 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:55,138 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:55,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:00:55,138 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2112719195, now seen corresponding path program 1 times [2021-03-25 05:00:55,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:55,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161419953] [2021-03-25 05:00:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:55,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:55,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:55,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:55,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:55,162 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:00:55,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:00:55,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:55,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:00:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:55,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161419953] [2021-03-25 05:00:55,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:55,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:00:55,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791673862] [2021-03-25 05:00:55,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:55,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:55,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:55,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-03-25 05:00:55,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 15 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2021-03-25 05:00:55,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:55,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-03-25 05:00:55,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:55,180 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 05:00:55,183 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 05:00:55,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 17 events. 1/17 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2021-03-25 05:00:55,184 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 05:00:55,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 14 transitions, 86 flow [2021-03-25 05:00:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:00:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:00:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-25 05:00:55,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8116666666666666 [2021-03-25 05:00:55,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-25 05:00:55,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-25 05:00:55,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:55,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-25 05:00:55,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 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) [2021-03-25 05:00:55,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 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) [2021-03-25 05:00:55,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 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) [2021-03-25 05:00:55,187 INFO L185 Difference]: Start difference. First operand has 31 places, 15 transitions, 86 flow. Second operand 5 states and 487 transitions. [2021-03-25 05:00:55,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 14 transitions, 86 flow [2021-03-25 05:00:55,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 68 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-25 05:00:55,188 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-25 05:00:55,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-25 05:00:55,188 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:00:55,188 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:55,188 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 05:00:55,188 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 05:00:55,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:55,188 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:00:55,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:55,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:00:55,189 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:00:55,189 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:00:55,189 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:55,189 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:00:55,189 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:55,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2021-03-25 05:00:55,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:00:55,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:00:55 BasicIcfg [2021-03-25 05:00:55,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:00:55,192 INFO L168 Benchmark]: Toolchain (without parser) took 3673.41 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 233.1 MB in the beginning and 298.3 MB in the end (delta: -65.2 MB). Peak memory consumption was 139.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,193 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:55,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.99 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 232.7 MB in the beginning and 344.3 MB in the end (delta: -111.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 381.7 MB. Free memory was 344.3 MB in the beginning and 342.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,193 INFO L168 Benchmark]: Boogie Preprocessor took 31.22 ms. Allocated memory is still 381.7 MB. Free memory was 342.2 MB in the beginning and 341.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,193 INFO L168 Benchmark]: RCFGBuilder took 453.66 ms. Allocated memory is still 381.7 MB. Free memory was 341.1 MB in the beginning and 319.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,194 INFO L168 Benchmark]: TraceAbstraction took 2705.77 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 319.1 MB in the beginning and 298.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 101.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:55,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 433.99 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 232.7 MB in the beginning and 344.3 MB in the end (delta: -111.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 381.7 MB. Free memory was 344.3 MB in the beginning and 342.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.22 ms. Allocated memory is still 381.7 MB. Free memory was 342.2 MB in the beginning and 341.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 453.66 ms. Allocated memory is still 381.7 MB. Free memory was 341.1 MB in the beginning and 319.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2705.77 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 319.1 MB in the beginning and 298.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 101.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 952.5ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 559, positive: 533, positive conditional: 0, positive unconditional: 533, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 390, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 390, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 559, positive: 158, positive conditional: 0, positive unconditional: 158, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 390, unknown conditional: 0, unknown unconditional: 390] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 581.8ms, 31 PlacesBefore, 26 PlacesAfterwards, 23 TransitionsBefore, 18 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 318 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 117, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 117, positive: 78, positive conditional: 0, positive unconditional: 78, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4ms, 28 PlacesBefore, 28 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 73 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4ms, 30 PlacesBefore, 30 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 63 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5ms, 29 PlacesBefore, 29 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 63 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4ms, 30 PlacesBefore, 30 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 79 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 32, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 48.3ms, 35 PlacesBefore, 33 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.4ms, 29 PlacesBefore, 29 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 94.4ms, 32 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 29 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2614.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 249.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1032.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 6 SDs, 0 SdLazy, 69 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 102.2ms SatisfiabilityAnalysisTime, 291.2ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...