./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:34,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:34,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:34,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:34,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:34,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:34,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:34,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:34,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:34,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:34,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:34,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:34,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:34,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:34,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:34,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:34,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:34,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:34,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:34,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:34,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:34,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:34,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:34,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:34,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:34,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:34,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:34,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:34,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:34,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:34,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:34,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:34,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:34,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:34,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:34,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:34,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:34,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:34,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:34,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:34,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:34,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:34:34,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:34,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:34,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:34,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:34,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:34,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:34,197 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:34,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:34,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:34,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:34,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:34,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:34,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:34:34,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:34,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:34:34,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:34,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:34:34,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:34,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:34:34,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:34,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:34,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:34,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:34,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:34,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:34,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:34:34,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:34,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:34:34,204 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:34:34,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:34:34,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:34:34,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:34,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa [2021-10-28 08:34:34,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:34,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:34,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:34,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:34,534 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:34,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-10-28 08:34:34,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/data/1f5d4578e/4c750dd4bc7542ccbe661578d59394e8/FLAG63d2f9aea [2021-10-28 08:34:35,173 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:35,174 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-10-28 08:34:35,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/data/1f5d4578e/4c750dd4bc7542ccbe661578d59394e8/FLAG63d2f9aea [2021-10-28 08:34:35,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/data/1f5d4578e/4c750dd4bc7542ccbe661578d59394e8 [2021-10-28 08:34:35,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:35,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:34:35,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:35,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:35,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:35,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb65f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35, skipping insertion in model container [2021-10-28 08:34:35,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:35,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:35,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2021-10-28 08:34:35,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:35,787 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:35,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2494,2507] [2021-10-28 08:34:35,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:35,841 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:35,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35 WrapperNode [2021-10-28 08:34:35,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:35,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:35,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:34:35,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:34:35,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:35,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:35,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:35,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:35,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:35,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:35,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:35,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:35,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (1/1) ... [2021-10-28 08:34:35,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:36,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:36,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 08:34:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 08:34:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 08:34:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 08:34:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:34:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:34:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 08:34:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 08:34:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:34:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:34:36,069 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 08:34:37,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:37,285 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 08:34:37,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:37 BoogieIcfgContainer [2021-10-28 08:34:37,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:37,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:37,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:37,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:37,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:35" (1/3) ... [2021-10-28 08:34:37,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e531c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:37, skipping insertion in model container [2021-10-28 08:34:37,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:35" (2/3) ... [2021-10-28 08:34:37,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e531c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:37, skipping insertion in model container [2021-10-28 08:34:37,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:37" (3/3) ... [2021-10-28 08:34:37,301 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2021-10-28 08:34:37,309 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 08:34:37,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:37,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:34:37,310 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 08:34:37,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,355 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,355 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,356 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,357 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,361 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,362 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,362 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,365 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,375 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,375 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,378 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,383 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:34:37,395 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 08:34:37,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:34:37,474 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:34:37,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 08:34:37,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 208 flow [2021-10-28 08:34:37,571 INFO L129 PetriNetUnfolder]: 5/94 cut-off events. [2021-10-28 08:34:37,571 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:34:37,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 5/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-10-28 08:34:37,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 208 flow [2021-10-28 08:34:37,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 184 flow [2021-10-28 08:34:37,619 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2021-10-28 08:34:37,620 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:34:37,623 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:37,624 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:37,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash -398877861, now seen corresponding path program 1 times [2021-10-28 08:34:37,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:37,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243185032] [2021-10-28 08:34:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:37,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:38,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:38,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243185032] [2021-10-28 08:34:38,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243185032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:38,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:38,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:38,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47490589] [2021-10-28 08:34:38,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:38,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:38,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:38,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-10-28 08:34:38,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:38,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:38,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:38,417 INFO L129 PetriNetUnfolder]: 6/146 cut-off events. [2021-10-28 08:34:38,417 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 08:34:38,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 146 events. 6/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 295 event pairs, 0 based on Foata normal form. 4/137 useless extension candidates. Maximal degree in co-relation 56. Up to 14 conditions per place. [2021-10-28 08:34:38,420 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 28 selfloop transitions, 5 changer transitions 1/96 dead transitions. [2021-10-28 08:34:38,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 270 flow [2021-10-28 08:34:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 08:34:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2021-10-28 08:34:38,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177083333333334 [2021-10-28 08:34:38,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2021-10-28 08:34:38,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2021-10-28 08:34:38,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:38,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2021-10-28 08:34:38,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 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) [2021-10-28 08:34:38,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:38,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:38,459 INFO L186 Difference]: Start difference. First operand has 88 places, 86 transitions, 184 flow. Second operand 6 states and 471 transitions. [2021-10-28 08:34:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 270 flow [2021-10-28 08:34:38,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 08:34:38,469 INFO L242 Difference]: Finished difference. Result has 92 places, 88 transitions, 208 flow [2021-10-28 08:34:38,472 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2021-10-28 08:34:38,472 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2021-10-28 08:34:38,473 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 208 flow [2021-10-28 08:34:38,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-10-28 08:34:38,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:38,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:38,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:34:38,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1572564141, now seen corresponding path program 2 times [2021-10-28 08:34:38,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:38,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768921099] [2021-10-28 08:34:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:38,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:38,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:38,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768921099] [2021-10-28 08:34:38,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768921099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:38,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:38,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:38,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144519138] [2021-10-28 08:34:38,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:38,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:38,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:38,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-10-28 08:34:38,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:38,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:38,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:38,765 INFO L129 PetriNetUnfolder]: 6/144 cut-off events. [2021-10-28 08:34:38,765 INFO L130 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2021-10-28 08:34:38,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 144 events. 6/144 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 284 event pairs, 0 based on Foata normal form. 2/144 useless extension candidates. Maximal degree in co-relation 140. Up to 14 conditions per place. [2021-10-28 08:34:38,767 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 28 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2021-10-28 08:34:38,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 306 flow [2021-10-28 08:34:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 08:34:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 467 transitions. [2021-10-28 08:34:38,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8107638888888888 [2021-10-28 08:34:38,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 467 transitions. [2021-10-28 08:34:38,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 467 transitions. [2021-10-28 08:34:38,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:38,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 467 transitions. [2021-10-28 08:34:38,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2021-10-28 08:34:38,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:38,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:38,776 INFO L186 Difference]: Start difference. First operand has 92 places, 88 transitions, 208 flow. Second operand 6 states and 467 transitions. [2021-10-28 08:34:38,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 306 flow [2021-10-28 08:34:38,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 97 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 08:34:38,781 INFO L242 Difference]: Finished difference. Result has 98 places, 90 transitions, 248 flow [2021-10-28 08:34:38,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2021-10-28 08:34:38,782 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2021-10-28 08:34:38,782 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 248 flow [2021-10-28 08:34:38,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-10-28 08:34:38,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:38,783 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:38,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:34:38,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 245926642, now seen corresponding path program 1 times [2021-10-28 08:34:38,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:38,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550106510] [2021-10-28 08:34:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:38,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:38,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:38,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550106510] [2021-10-28 08:34:38,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550106510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:38,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:38,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:38,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868928471] [2021-10-28 08:34:38,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:38,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:38,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:38,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2021-10-28 08:34:38,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:38,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:38,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:39,067 INFO L129 PetriNetUnfolder]: 4/164 cut-off events. [2021-10-28 08:34:39,067 INFO L130 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2021-10-28 08:34:39,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 164 events. 4/164 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 422 event pairs, 0 based on Foata normal form. 3/165 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2021-10-28 08:34:39,068 INFO L132 encePairwiseOnDemand]: 88/96 looper letters, 26 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2021-10-28 08:34:39,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 340 flow [2021-10-28 08:34:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:34:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2021-10-28 08:34:39,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7991071428571429 [2021-10-28 08:34:39,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2021-10-28 08:34:39,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2021-10-28 08:34:39,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:39,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2021-10-28 08:34:39,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2021-10-28 08:34:39,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,077 INFO L186 Difference]: Start difference. First operand has 98 places, 90 transitions, 248 flow. Second operand 7 states and 537 transitions. [2021-10-28 08:34:39,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 340 flow [2021-10-28 08:34:39,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 97 transitions, 333 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-28 08:34:39,083 INFO L242 Difference]: Finished difference. Result has 104 places, 93 transitions, 278 flow [2021-10-28 08:34:39,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2021-10-28 08:34:39,083 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2021-10-28 08:34:39,084 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 278 flow [2021-10-28 08:34:39,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2021-10-28 08:34:39,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:39,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:39,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:34:39,085 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1985317150, now seen corresponding path program 1 times [2021-10-28 08:34:39,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:39,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626879333] [2021-10-28 08:34:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:39,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:39,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:39,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626879333] [2021-10-28 08:34:39,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626879333] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:39,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:39,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:34:39,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267713281] [2021-10-28 08:34:39,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:39,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:39,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 96 [2021-10-28 08:34:39,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 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) [2021-10-28 08:34:39,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:39,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 96 [2021-10-28 08:34:39,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:39,297 INFO L129 PetriNetUnfolder]: 6/201 cut-off events. [2021-10-28 08:34:39,297 INFO L130 PetriNetUnfolder]: For 51/53 co-relation queries the response was YES. [2021-10-28 08:34:39,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 201 events. 6/201 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 691 event pairs, 0 based on Foata normal form. 2/203 useless extension candidates. Maximal degree in co-relation 221. Up to 52 conditions per place. [2021-10-28 08:34:39,299 INFO L132 encePairwiseOnDemand]: 88/96 looper letters, 18 selfloop transitions, 4 changer transitions 4/105 dead transitions. [2021-10-28 08:34:39,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 354 flow [2021-10-28 08:34:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:34:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 580 transitions. [2021-10-28 08:34:39,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2021-10-28 08:34:39,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 580 transitions. [2021-10-28 08:34:39,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 580 transitions. [2021-10-28 08:34:39,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:39,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 580 transitions. [2021-10-28 08:34:39,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2021-10-28 08:34:39,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,307 INFO L186 Difference]: Start difference. First operand has 104 places, 93 transitions, 278 flow. Second operand 7 states and 580 transitions. [2021-10-28 08:34:39,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 354 flow [2021-10-28 08:34:39,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 08:34:39,313 INFO L242 Difference]: Finished difference. Result has 113 places, 96 transitions, 306 flow [2021-10-28 08:34:39,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2021-10-28 08:34:39,314 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2021-10-28 08:34:39,314 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 306 flow [2021-10-28 08:34:39,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 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) [2021-10-28 08:34:39,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:39,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:39,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:34:39,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1001518309, now seen corresponding path program 1 times [2021-10-28 08:34:39,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:39,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294646174] [2021-10-28 08:34:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:39,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:39,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:39,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294646174] [2021-10-28 08:34:39,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294646174] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:39,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:39,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:34:39,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904023516] [2021-10-28 08:34:39,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:34:39,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:34:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:34:39,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 96 [2021-10-28 08:34:39,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 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) [2021-10-28 08:34:39,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:39,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 96 [2021-10-28 08:34:39,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:39,567 INFO L129 PetriNetUnfolder]: 4/203 cut-off events. [2021-10-28 08:34:39,567 INFO L130 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2021-10-28 08:34:39,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 203 events. 4/203 cut-off events. For 59/61 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 706 event pairs, 0 based on Foata normal form. 2/205 useless extension candidates. Maximal degree in co-relation 277. Up to 78 conditions per place. [2021-10-28 08:34:39,569 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 15 selfloop transitions, 0 changer transitions 10/101 dead transitions. [2021-10-28 08:34:39,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 362 flow [2021-10-28 08:34:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:34:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2021-10-28 08:34:39,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8526785714285714 [2021-10-28 08:34:39,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2021-10-28 08:34:39,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2021-10-28 08:34:39,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:39,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2021-10-28 08:34:39,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 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) [2021-10-28 08:34:39,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,576 INFO L186 Difference]: Start difference. First operand has 113 places, 96 transitions, 306 flow. Second operand 7 states and 573 transitions. [2021-10-28 08:34:39,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 362 flow [2021-10-28 08:34:39,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 101 transitions, 350 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-28 08:34:39,583 INFO L242 Difference]: Finished difference. Result has 117 places, 91 transitions, 277 flow [2021-10-28 08:34:39,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2021-10-28 08:34:39,583 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 29 predicate places. [2021-10-28 08:34:39,583 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 277 flow [2021-10-28 08:34:39,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 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) [2021-10-28 08:34:39,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:39,584 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:39,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:34:39,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1224897900, now seen corresponding path program 2 times [2021-10-28 08:34:39,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:39,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111996628] [2021-10-28 08:34:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:39,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:39,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:39,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111996628] [2021-10-28 08:34:39,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111996628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:39,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:39,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:39,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522964424] [2021-10-28 08:34:39,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:39,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:39,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:39,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2021-10-28 08:34:39,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:39,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:39,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:39,829 INFO L129 PetriNetUnfolder]: 4/174 cut-off events. [2021-10-28 08:34:39,829 INFO L130 PetriNetUnfolder]: For 66/70 co-relation queries the response was YES. [2021-10-28 08:34:39,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 174 events. 4/174 cut-off events. For 66/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 479 event pairs, 0 based on Foata normal form. 1/175 useless extension candidates. Maximal degree in co-relation 325. Up to 13 conditions per place. [2021-10-28 08:34:39,831 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 21 selfloop transitions, 9 changer transitions 2/95 dead transitions. [2021-10-28 08:34:39,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 95 transitions, 359 flow [2021-10-28 08:34:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:34:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2021-10-28 08:34:39,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7961309523809523 [2021-10-28 08:34:39,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2021-10-28 08:34:39,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2021-10-28 08:34:39,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:39,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2021-10-28 08:34:39,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 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) [2021-10-28 08:34:39,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:39,839 INFO L186 Difference]: Start difference. First operand has 117 places, 91 transitions, 277 flow. Second operand 7 states and 535 transitions. [2021-10-28 08:34:39,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 95 transitions, 359 flow [2021-10-28 08:34:39,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 95 transitions, 325 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-10-28 08:34:39,844 INFO L242 Difference]: Finished difference. Result has 109 places, 90 transitions, 270 flow [2021-10-28 08:34:39,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2021-10-28 08:34:39,845 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 21 predicate places. [2021-10-28 08:34:39,845 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 270 flow [2021-10-28 08:34:39,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2021-10-28 08:34:39,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:39,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:39,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:34:39,846 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1059012304, now seen corresponding path program 1 times [2021-10-28 08:34:39,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:39,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936731083] [2021-10-28 08:34:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:39,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:39,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:39,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936731083] [2021-10-28 08:34:39,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936731083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:39,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:39,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:39,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606322665] [2021-10-28 08:34:39,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:39,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:39,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:39,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:39,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:39,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:40,083 INFO L129 PetriNetUnfolder]: 0/159 cut-off events. [2021-10-28 08:34:40,083 INFO L130 PetriNetUnfolder]: For 42/46 co-relation queries the response was YES. [2021-10-28 08:34:40,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 159 events. 0/159 cut-off events. For 42/46 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 403 event pairs, 0 based on Foata normal form. 3/162 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-10-28 08:34:40,084 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 23 selfloop transitions, 6 changer transitions 1/93 dead transitions. [2021-10-28 08:34:40,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 93 transitions, 334 flow [2021-10-28 08:34:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 08:34:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2021-10-28 08:34:40,086 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7986111111111112 [2021-10-28 08:34:40,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2021-10-28 08:34:40,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2021-10-28 08:34:40,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:40,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2021-10-28 08:34:40,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 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) [2021-10-28 08:34:40,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:40,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:40,091 INFO L186 Difference]: Start difference. First operand has 109 places, 90 transitions, 270 flow. Second operand 6 states and 460 transitions. [2021-10-28 08:34:40,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 93 transitions, 334 flow [2021-10-28 08:34:40,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 319 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-10-28 08:34:40,095 INFO L242 Difference]: Finished difference. Result has 109 places, 89 transitions, 263 flow [2021-10-28 08:34:40,095 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2021-10-28 08:34:40,096 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 21 predicate places. [2021-10-28 08:34:40,096 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 263 flow [2021-10-28 08:34:40,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,096 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:40,096 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:40,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:34:40,097 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1988512332, now seen corresponding path program 1 times [2021-10-28 08:34:40,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:40,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061298670] [2021-10-28 08:34:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:40,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:40,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:40,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061298670] [2021-10-28 08:34:40,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061298670] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:40,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:40,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:34:40,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834813542] [2021-10-28 08:34:40,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:34:40,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:34:40,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:34:40,244 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 96 [2021-10-28 08:34:40,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 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) [2021-10-28 08:34:40,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:40,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 96 [2021-10-28 08:34:40,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:40,339 INFO L129 PetriNetUnfolder]: 0/144 cut-off events. [2021-10-28 08:34:40,339 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2021-10-28 08:34:40,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 144 events. 0/144 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 300 event pairs, 0 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-10-28 08:34:40,340 INFO L132 encePairwiseOnDemand]: 87/96 looper letters, 20 selfloop transitions, 4 changer transitions 5/100 dead transitions. [2021-10-28 08:34:40,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 100 transitions, 343 flow [2021-10-28 08:34:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:34:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 08:34:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 638 transitions. [2021-10-28 08:34:40,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8307291666666666 [2021-10-28 08:34:40,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 638 transitions. [2021-10-28 08:34:40,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 638 transitions. [2021-10-28 08:34:40,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:40,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 638 transitions. [2021-10-28 08:34:40,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.75) internal successors, (638), 8 states have internal predecessors, (638), 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) [2021-10-28 08:34:40,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 96.0) internal successors, (864), 9 states have internal predecessors, (864), 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) [2021-10-28 08:34:40,348 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 96.0) internal successors, (864), 9 states have internal predecessors, (864), 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) [2021-10-28 08:34:40,349 INFO L186 Difference]: Start difference. First operand has 109 places, 89 transitions, 263 flow. Second operand 8 states and 638 transitions. [2021-10-28 08:34:40,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 100 transitions, 343 flow [2021-10-28 08:34:40,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 100 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 08:34:40,352 INFO L242 Difference]: Finished difference. Result has 118 places, 89 transitions, 277 flow [2021-10-28 08:34:40,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2021-10-28 08:34:40,353 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 30 predicate places. [2021-10-28 08:34:40,353 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 277 flow [2021-10-28 08:34:40,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 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) [2021-10-28 08:34:40,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:40,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:40,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:34:40,354 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash -178473350, now seen corresponding path program 1 times [2021-10-28 08:34:40,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:40,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003609707] [2021-10-28 08:34:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:40,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:40,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:40,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003609707] [2021-10-28 08:34:40,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003609707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:40,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:40,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:40,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796681264] [2021-10-28 08:34:40,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:40,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:40,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:40,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:40,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:40,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:40,549 INFO L129 PetriNetUnfolder]: 0/122 cut-off events. [2021-10-28 08:34:40,549 INFO L130 PetriNetUnfolder]: For 34/38 co-relation queries the response was YES. [2021-10-28 08:34:40,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 122 events. 0/122 cut-off events. For 34/38 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 3/125 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-28 08:34:40,550 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 17 selfloop transitions, 4 changer transitions 6/90 dead transitions. [2021-10-28 08:34:40,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 90 transitions, 329 flow [2021-10-28 08:34:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:34:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:34:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2021-10-28 08:34:40,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7886904761904762 [2021-10-28 08:34:40,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 530 transitions. [2021-10-28 08:34:40,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 530 transitions. [2021-10-28 08:34:40,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:40,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 530 transitions. [2021-10-28 08:34:40,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 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) [2021-10-28 08:34:40,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:40,557 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2021-10-28 08:34:40,557 INFO L186 Difference]: Start difference. First operand has 118 places, 89 transitions, 277 flow. Second operand 7 states and 530 transitions. [2021-10-28 08:34:40,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 90 transitions, 329 flow [2021-10-28 08:34:40,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 90 transitions, 307 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-10-28 08:34:40,561 INFO L242 Difference]: Finished difference. Result has 112 places, 84 transitions, 231 flow [2021-10-28 08:34:40,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=112, PETRI_TRANSITIONS=84} [2021-10-28 08:34:40,561 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2021-10-28 08:34:40,561 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 84 transitions, 231 flow [2021-10-28 08:34:40,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:40,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:34:40,563 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1736823436, now seen corresponding path program 1 times [2021-10-28 08:34:40,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282218566] [2021-10-28 08:34:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:40,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:40,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:40,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282218566] [2021-10-28 08:34:40,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282218566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:40,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:40,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:40,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325862723] [2021-10-28 08:34:40,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:40,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:40,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:40,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 84 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:40,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:40,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:40,722 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-10-28 08:34:40,722 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-28 08:34:40,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 80 events. 0/80 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-10-28 08:34:40,722 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 16 selfloop transitions, 2 changer transitions 4/80 dead transitions. [2021-10-28 08:34:40,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 80 transitions, 253 flow [2021-10-28 08:34:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:34:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 08:34:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2021-10-28 08:34:40,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.79375 [2021-10-28 08:34:40,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2021-10-28 08:34:40,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2021-10-28 08:34:40,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:40,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2021-10-28 08:34:40,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2021-10-28 08:34:40,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2021-10-28 08:34:40,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2021-10-28 08:34:40,728 INFO L186 Difference]: Start difference. First operand has 112 places, 84 transitions, 231 flow. Second operand 5 states and 381 transitions. [2021-10-28 08:34:40,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 80 transitions, 253 flow [2021-10-28 08:34:40,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 80 transitions, 221 flow, removed 3 selfloop flow, removed 14 redundant places. [2021-10-28 08:34:40,731 INFO L242 Difference]: Finished difference. Result has 96 places, 76 transitions, 173 flow [2021-10-28 08:34:40,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2021-10-28 08:34:40,732 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 8 predicate places. [2021-10-28 08:34:40,732 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 173 flow [2021-10-28 08:34:40,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:34:40,733 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:34:40,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:34:40,733 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 08:34:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:34:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 839978080, now seen corresponding path program 2 times [2021-10-28 08:34:40,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:34:40,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368404636] [2021-10-28 08:34:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:34:40,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:34:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:34:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:34:40,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:34:40,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368404636] [2021-10-28 08:34:40,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368404636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:34:40,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:34:40,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:34:40,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494455280] [2021-10-28 08:34:40,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:34:40,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:34:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:34:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:34:40,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2021-10-28 08:34:40,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:34:40,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2021-10-28 08:34:40,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:34:40,917 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-10-28 08:34:40,918 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 08:34:40,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 64 events. 0/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-28 08:34:40,918 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2021-10-28 08:34:40,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 179 flow [2021-10-28 08:34:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:34:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 08:34:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2021-10-28 08:34:40,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-10-28 08:34:40,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2021-10-28 08:34:40,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2021-10-28 08:34:40,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:34:40,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2021-10-28 08:34:40,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 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) [2021-10-28 08:34:40,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:40,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 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) [2021-10-28 08:34:40,926 INFO L186 Difference]: Start difference. First operand has 96 places, 76 transitions, 173 flow. Second operand 6 states and 450 transitions. [2021-10-28 08:34:40,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 179 flow [2021-10-28 08:34:40,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 170 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-10-28 08:34:40,927 INFO L242 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2021-10-28 08:34:40,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2021-10-28 08:34:40,928 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, -11 predicate places. [2021-10-28 08:34:40,928 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2021-10-28 08:34:40,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2021-10-28 08:34:40,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:34:40,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 08:34:40,932 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 08:34:40,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:34:40,936 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 08:34:40,938 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 08:34:40,938 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:34:40,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:34:40 BasicIcfg [2021-10-28 08:34:40,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:34:40,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:34:40,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:34:40,942 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:34:40,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:37" (3/4) ... [2021-10-28 08:34:40,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:34:40,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 08:34:40,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 08:34:40,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 08:34:40,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:34:40,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:34:40,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:34:41,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:34:41,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:34:41,011 INFO L168 Benchmark]: Toolchain (without parser) took 5488.40 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 72.5 MB in the beginning and 42.2 MB in the end (delta: 30.3 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,011 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.5 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:34:41,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.54 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 75.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.00 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,013 INFO L168 Benchmark]: Boogie Preprocessor took 60.35 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,013 INFO L168 Benchmark]: RCFGBuilder took 1318.93 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 73.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,014 INFO L168 Benchmark]: TraceAbstraction took 3648.23 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 73.0 MB in the beginning and 45.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,014 INFO L168 Benchmark]: Witness Printer took 68.22 ms. Allocated memory is still 125.8 MB. Free memory was 45.4 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:34:41,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.5 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.54 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 75.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.00 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 73.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.35 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1318.93 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 73.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3648.23 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 73.0 MB in the beginning and 45.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.22 ms. Allocated memory is still 125.8 MB. Free memory was 45.4 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: 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 with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 226 SDslu, 303 SDs, 0 SdLazy, 411 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=4, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 820 NumberOfCodeBlocks, 820 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 1638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-10-28 08:34:41,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d186b-8026-4422-92d1-490c35965323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...