./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa --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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:20:40,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:20:40,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:20:40,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:20:40,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:20:40,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:20:40,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:20:40,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:20:40,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:20:40,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:20:40,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:20:40,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:20:40,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:20:40,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:20:40,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:20:40,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:20:40,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:20:40,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:20:40,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:20:40,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:20:40,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:20:40,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:20:40,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:20:40,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:20:40,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:20:40,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:20:40,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:20:40,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:20:40,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:20:40,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:20:40,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:20:40,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:20:40,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:20:40,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:20:40,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:20:40,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:20:40,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:20:40,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:20:40,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:20:40,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:20:40,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:20:40,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:20:40,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:20:40,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:20:40,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:20:40,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:20:40,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:20:40,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:20:40,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:20:40,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:20:40,125 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:20:40,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:20:40,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:20:40,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:20:40,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:20:40,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:20:40,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:20:40,129 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_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2021-12-07 01:20:40,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:20:40,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:20:40,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:20:40,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:20:40,321 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:20:40,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-12-07 01:20:40,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/data/0375e2d49/37c39df6f85e4739a720e9166ae1cec4/FLAGff1dfcd8b [2021-12-07 01:20:40,742 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:20:40,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-12-07 01:20:40,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/data/0375e2d49/37c39df6f85e4739a720e9166ae1cec4/FLAGff1dfcd8b [2021-12-07 01:20:40,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/data/0375e2d49/37c39df6f85e4739a720e9166ae1cec4 [2021-12-07 01:20:40,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:20:40,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:20:40,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:20:40,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:20:40,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:20:40,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfa1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40, skipping insertion in model container [2021-12-07 01:20:40,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:20:40,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:20:40,924 WARN L230 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_c53b4476-db28-43c1-83e2-b1ea7484a755/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-12-07 01:20:40,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:20:40,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:20:40,948 WARN L230 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_c53b4476-db28-43c1-83e2-b1ea7484a755/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-12-07 01:20:40,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:20:40,959 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:20:40,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40 WrapperNode [2021-12-07 01:20:40,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:20:40,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:20:40,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:20:40,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:20:40,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,985 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-07 01:20:40,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:20:40,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:20:40,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:20:40,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:20:40,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:40,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:41,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:41,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:41,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:20:41,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:20:41,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:20:41,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:20:41,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (1/1) ... [2021-12-07 01:20:41,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:20:41,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:20:41,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:20:41,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53b4476-db28-43c1-83e2-b1ea7484a755/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-07 01:20:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-07 01:20:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-07 01:20:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:20:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:20:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:20:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:20:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:20:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:20:41,065 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 01:20:41,121 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:20:41,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:20:41,260 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:20:41,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:20:41,267 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 01:20:41,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:20:41 BoogieIcfgContainer [2021-12-07 01:20:41,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:20:41,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:20:41,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:20:41,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:20:41,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:20:40" (1/3) ... [2021-12-07 01:20:41,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50561824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:20:41, skipping insertion in model container [2021-12-07 01:20:41,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:20:40" (2/3) ... [2021-12-07 01:20:41,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50561824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:20:41, skipping insertion in model container [2021-12-07 01:20:41,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:20:41" (3/3) ... [2021-12-07 01:20:41,274 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2021-12-07 01:20:41,278 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 01:20:41,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:20:41,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:20:41,279 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 01:20:41,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,311 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,312 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,313 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,315 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:20:41,327 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-07 01:20:41,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:20:41,369 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 [2021-12-07 01:20:41,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-07 01:20:41,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2021-12-07 01:20:41,424 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2021-12-07 01:20:41,425 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-07 01:20:41,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-12-07 01:20:41,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2021-12-07 01:20:41,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2021-12-07 01:20:41,462 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-12-07 01:20:41,462 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-07 01:20:41,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:41,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:41,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2021-12-07 01:20:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:41,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750026017] [2021-12-07 01:20:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:41,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:41,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:41,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750026017] [2021-12-07 01:20:41,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750026017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:41,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:41,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:20:41,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706843785] [2021-12-07 01:20:41,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:41,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:20:41,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:20:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:20:41,810 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2021-12-07 01:20:41,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 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) [2021-12-07 01:20:41,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:41,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2021-12-07 01:20:41,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:42,060 INFO L129 PetriNetUnfolder]: 133/471 cut-off events. [2021-12-07 01:20:42,060 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2021-12-07 01:20:42,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 471 events. 133/471 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2364 event pairs, 30 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 615. Up to 68 conditions per place. [2021-12-07 01:20:42,069 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2021-12-07 01:20:42,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2021-12-07 01:20:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:20:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-07 01:20:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2021-12-07 01:20:42,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2021-12-07 01:20:42,089 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2021-12-07 01:20:42,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2021-12-07 01:20:42,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:42,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2021-12-07 01:20:42,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 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) [2021-12-07 01:20:42,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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) [2021-12-07 01:20:42,113 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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) [2021-12-07 01:20:42,114 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2021-12-07 01:20:42,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2021-12-07 01:20:42,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-07 01:20:42,123 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2021-12-07 01:20:42,125 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2021-12-07 01:20:42,127 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2021-12-07 01:20:42,128 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2021-12-07 01:20:42,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 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) [2021-12-07 01:20:42,128 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:42,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:42,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:20:42,129 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1204171975, now seen corresponding path program 1 times [2021-12-07 01:20:42,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:42,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486689108] [2021-12-07 01:20:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:42,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:42,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:42,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486689108] [2021-12-07 01:20:42,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486689108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:42,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:42,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:42,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595189627] [2021-12-07 01:20:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:42,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:42,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:42,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:42,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:42,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:42,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:42,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:42,531 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), 62#thread1ENTRYtrue, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2021-12-07 01:20:42,531 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2021-12-07 01:20:42,531 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-07 01:20:42,531 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-07 01:20:42,531 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-07 01:20:42,545 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), 87#L42-2true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2021-12-07 01:20:42,546 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2021-12-07 01:20:42,546 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,546 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,546 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,550 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), 79#L42true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2021-12-07 01:20:42,550 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2021-12-07 01:20:42,551 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,551 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,551 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-07 01:20:42,559 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 82#L42-5true, Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2021-12-07 01:20:42,559 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2021-12-07 01:20:42,559 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,559 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,560 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,563 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), 10#L54-8true, 90#L42-3true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2021-12-07 01:20:42,564 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2021-12-07 01:20:42,564 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,564 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,564 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-07 01:20:42,632 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (not (= ~sponsored_0~0 (* 256 (div ~sponsored_0~0 256))))), Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 10#L54-8true]) [2021-12-07 01:20:42,633 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2021-12-07 01:20:42,633 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-07 01:20:42,633 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-07 01:20:42,633 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-07 01:20:42,689 INFO L129 PetriNetUnfolder]: 498/2327 cut-off events. [2021-12-07 01:20:42,689 INFO L130 PetriNetUnfolder]: For 486/636 co-relation queries the response was YES. [2021-12-07 01:20:42,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 2327 events. 498/2327 cut-off events. For 486/636 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21774 event pairs, 123 based on Foata normal form. 36/2071 useless extension candidates. Maximal degree in co-relation 4265. Up to 331 conditions per place. [2021-12-07 01:20:42,708 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2021-12-07 01:20:42,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 531 flow [2021-12-07 01:20:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-07 01:20:42,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-07 01:20:42,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-07 01:20:42,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-07 01:20:42,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:42,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-07 01:20:42,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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) [2021-12-07 01:20:42,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:42,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:42,715 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 5 states and 551 transitions. [2021-12-07 01:20:42,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 531 flow [2021-12-07 01:20:42,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 155 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-07 01:20:42,731 INFO L242 Difference]: Finished difference. Result has 124 places, 127 transitions, 397 flow [2021-12-07 01:20:42,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2021-12-07 01:20:42,732 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2021-12-07 01:20:42,732 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 397 flow [2021-12-07 01:20:42,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:42,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:42,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:42,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:20:42,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:42,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1498378015, now seen corresponding path program 2 times [2021-12-07 01:20:42,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:42,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728027167] [2021-12-07 01:20:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:42,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:42,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:42,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728027167] [2021-12-07 01:20:42,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728027167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:42,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:42,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:42,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433106394] [2021-12-07 01:20:42,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:42,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:42,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:42,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:42,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:42,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:42,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:42,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:43,158 INFO L129 PetriNetUnfolder]: 573/2563 cut-off events. [2021-12-07 01:20:43,158 INFO L130 PetriNetUnfolder]: For 1015/1145 co-relation queries the response was YES. [2021-12-07 01:20:43,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 2563 events. 573/2563 cut-off events. For 1015/1145 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23934 event pairs, 122 based on Foata normal form. 56/2500 useless extension candidates. Maximal degree in co-relation 4382. Up to 318 conditions per place. [2021-12-07 01:20:43,180 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 61 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2021-12-07 01:20:43,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 178 transitions, 780 flow [2021-12-07 01:20:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2021-12-07 01:20:43,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2021-12-07 01:20:43,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2021-12-07 01:20:43,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2021-12-07 01:20:43,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:43,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2021-12-07 01:20:43,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2021-12-07 01:20:43,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:43,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:43,187 INFO L186 Difference]: Start difference. First operand has 124 places, 127 transitions, 397 flow. Second operand 5 states and 556 transitions. [2021-12-07 01:20:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 178 transitions, 780 flow [2021-12-07 01:20:43,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 780 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:43,199 INFO L242 Difference]: Finished difference. Result has 132 places, 145 transitions, 605 flow [2021-12-07 01:20:43,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=132, PETRI_TRANSITIONS=145} [2021-12-07 01:20:43,200 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 20 predicate places. [2021-12-07 01:20:43,201 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 145 transitions, 605 flow [2021-12-07 01:20:43,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:43,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:43,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:20:43,202 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash -613223827, now seen corresponding path program 1 times [2021-12-07 01:20:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576138644] [2021-12-07 01:20:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:43,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576138644] [2021-12-07 01:20:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576138644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:43,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:43,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:43,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830240253] [2021-12-07 01:20:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:43,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:43,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:43,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:43,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 145 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:43,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:43,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:43,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:43,862 INFO L129 PetriNetUnfolder]: 653/3334 cut-off events. [2021-12-07 01:20:43,862 INFO L130 PetriNetUnfolder]: For 2906/3032 co-relation queries the response was YES. [2021-12-07 01:20:43,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3334 events. 653/3334 cut-off events. For 2906/3032 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 33696 event pairs, 160 based on Foata normal form. 58/3239 useless extension candidates. Maximal degree in co-relation 6185. Up to 357 conditions per place. [2021-12-07 01:20:43,898 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 113 selfloop transitions, 30 changer transitions 11/246 dead transitions. [2021-12-07 01:20:43,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 246 transitions, 1561 flow [2021-12-07 01:20:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 773 transitions. [2021-12-07 01:20:43,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8905529953917051 [2021-12-07 01:20:43,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 773 transitions. [2021-12-07 01:20:43,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 773 transitions. [2021-12-07 01:20:43,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:43,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 773 transitions. [2021-12-07 01:20:43,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 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) [2021-12-07 01:20:43,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:43,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:43,908 INFO L186 Difference]: Start difference. First operand has 132 places, 145 transitions, 605 flow. Second operand 7 states and 773 transitions. [2021-12-07 01:20:43,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 246 transitions, 1561 flow [2021-12-07 01:20:43,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 1561 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:43,927 INFO L242 Difference]: Finished difference. Result has 144 places, 169 transitions, 941 flow [2021-12-07 01:20:43,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=941, PETRI_PLACES=144, PETRI_TRANSITIONS=169} [2021-12-07 01:20:43,928 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 32 predicate places. [2021-12-07 01:20:43,929 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 169 transitions, 941 flow [2021-12-07 01:20:43,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:43,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:43,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:43,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:20:43,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:43,930 INFO L85 PathProgramCache]: Analyzing trace with hash 900838677, now seen corresponding path program 2 times [2021-12-07 01:20:43,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:43,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948283323] [2021-12-07 01:20:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:43,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:44,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:44,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948283323] [2021-12-07 01:20:44,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948283323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:44,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:44,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:44,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509188271] [2021-12-07 01:20:44,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:44,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:44,029 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:44,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 169 transitions, 941 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:44,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:44,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:44,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:44,646 INFO L129 PetriNetUnfolder]: 756/4161 cut-off events. [2021-12-07 01:20:44,646 INFO L130 PetriNetUnfolder]: For 5960/6119 co-relation queries the response was YES. [2021-12-07 01:20:44,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 4161 events. 756/4161 cut-off events. For 5960/6119 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 44330 event pairs, 147 based on Foata normal form. 36/4023 useless extension candidates. Maximal degree in co-relation 8459. Up to 460 conditions per place. [2021-12-07 01:20:44,698 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 111 selfloop transitions, 65 changer transitions 7/275 dead transitions. [2021-12-07 01:20:44,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 275 transitions, 2186 flow [2021-12-07 01:20:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2021-12-07 01:20:44,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2021-12-07 01:20:44,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2021-12-07 01:20:44,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2021-12-07 01:20:44,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:44,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2021-12-07 01:20:44,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2021-12-07 01:20:44,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:44,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:44,706 INFO L186 Difference]: Start difference. First operand has 144 places, 169 transitions, 941 flow. Second operand 7 states and 769 transitions. [2021-12-07 01:20:44,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 275 transitions, 2186 flow [2021-12-07 01:20:44,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 275 transitions, 2176 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-12-07 01:20:44,726 INFO L242 Difference]: Finished difference. Result has 154 places, 210 transitions, 1655 flow [2021-12-07 01:20:44,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1655, PETRI_PLACES=154, PETRI_TRANSITIONS=210} [2021-12-07 01:20:44,727 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2021-12-07 01:20:44,727 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 210 transitions, 1655 flow [2021-12-07 01:20:44,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:44,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:44,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:44,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:20:44,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1743897617, now seen corresponding path program 3 times [2021-12-07 01:20:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:44,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012536415] [2021-12-07 01:20:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:44,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:44,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:44,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012536415] [2021-12-07 01:20:44,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012536415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:44,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:44,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:44,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709249489] [2021-12-07 01:20:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:44,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:44,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:44,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:44,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:44,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:44,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 210 transitions, 1655 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:44,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:44,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:44,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:45,493 INFO L129 PetriNetUnfolder]: 787/4731 cut-off events. [2021-12-07 01:20:45,494 INFO L130 PetriNetUnfolder]: For 9321/9483 co-relation queries the response was YES. [2021-12-07 01:20:45,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11625 conditions, 4731 events. 787/4731 cut-off events. For 9321/9483 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 53250 event pairs, 195 based on Foata normal form. 77/4616 useless extension candidates. Maximal degree in co-relation 9386. Up to 530 conditions per place. [2021-12-07 01:20:45,524 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 138 selfloop transitions, 64 changer transitions 4/298 dead transitions. [2021-12-07 01:20:45,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 298 transitions, 2939 flow [2021-12-07 01:20:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2021-12-07 01:20:45,526 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2021-12-07 01:20:45,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2021-12-07 01:20:45,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2021-12-07 01:20:45,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:45,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2021-12-07 01:20:45,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2021-12-07 01:20:45,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:45,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:45,530 INFO L186 Difference]: Start difference. First operand has 154 places, 210 transitions, 1655 flow. Second operand 7 states and 769 transitions. [2021-12-07 01:20:45,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 298 transitions, 2939 flow [2021-12-07 01:20:45,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 298 transitions, 2895 flow, removed 22 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:45,561 INFO L242 Difference]: Finished difference. Result has 166 places, 233 transitions, 2225 flow [2021-12-07 01:20:45,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2225, PETRI_PLACES=166, PETRI_TRANSITIONS=233} [2021-12-07 01:20:45,562 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2021-12-07 01:20:45,562 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 233 transitions, 2225 flow [2021-12-07 01:20:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:45,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:45,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:45,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:20:45,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2146311195, now seen corresponding path program 1 times [2021-12-07 01:20:45,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664021219] [2021-12-07 01:20:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:45,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:45,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:45,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664021219] [2021-12-07 01:20:45,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664021219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:45,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:45,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:45,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112345973] [2021-12-07 01:20:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:45,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:45,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:45,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:45,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 233 transitions, 2225 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:45,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:45,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:45,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:46,361 INFO L129 PetriNetUnfolder]: 824/5430 cut-off events. [2021-12-07 01:20:46,361 INFO L130 PetriNetUnfolder]: For 12463/12693 co-relation queries the response was YES. [2021-12-07 01:20:46,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13386 conditions, 5430 events. 824/5430 cut-off events. For 12463/12693 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 63038 event pairs, 201 based on Foata normal form. 77/5278 useless extension candidates. Maximal degree in co-relation 10862. Up to 597 conditions per place. [2021-12-07 01:20:46,394 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 151 selfloop transitions, 69 changer transitions 4/316 dead transitions. [2021-12-07 01:20:46,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 316 transitions, 3571 flow [2021-12-07 01:20:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2021-12-07 01:20:46,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2021-12-07 01:20:46,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2021-12-07 01:20:46,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2021-12-07 01:20:46,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:46,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2021-12-07 01:20:46,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2021-12-07 01:20:46,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:46,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:46,400 INFO L186 Difference]: Start difference. First operand has 166 places, 233 transitions, 2225 flow. Second operand 7 states and 769 transitions. [2021-12-07 01:20:46,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 316 transitions, 3571 flow [2021-12-07 01:20:46,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 316 transitions, 3553 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:46,450 INFO L242 Difference]: Finished difference. Result has 178 places, 262 transitions, 2985 flow [2021-12-07 01:20:46,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2985, PETRI_PLACES=178, PETRI_TRANSITIONS=262} [2021-12-07 01:20:46,451 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2021-12-07 01:20:46,451 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 262 transitions, 2985 flow [2021-12-07 01:20:46,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:46,452 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:46,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:46,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:20:46,452 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -222047489, now seen corresponding path program 1 times [2021-12-07 01:20:46,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:46,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448924275] [2021-12-07 01:20:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:46,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:46,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:46,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448924275] [2021-12-07 01:20:46,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448924275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:46,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:46,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:46,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171087142] [2021-12-07 01:20:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:46,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:46,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:46,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:46,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 262 transitions, 2985 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:46,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:46,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:46,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:47,362 INFO L129 PetriNetUnfolder]: 792/5288 cut-off events. [2021-12-07 01:20:47,362 INFO L130 PetriNetUnfolder]: For 17885/18080 co-relation queries the response was YES. [2021-12-07 01:20:47,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13871 conditions, 5288 events. 792/5288 cut-off events. For 17885/18080 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 61550 event pairs, 180 based on Foata normal form. 106/5184 useless extension candidates. Maximal degree in co-relation 11596. Up to 564 conditions per place. [2021-12-07 01:20:47,395 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 185 selfloop transitions, 88 changer transitions 11/376 dead transitions. [2021-12-07 01:20:47,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 376 transitions, 5049 flow [2021-12-07 01:20:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2021-12-07 01:20:47,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2021-12-07 01:20:47,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2021-12-07 01:20:47,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2021-12-07 01:20:47,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:47,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2021-12-07 01:20:47,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:20:47,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:47,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:47,401 INFO L186 Difference]: Start difference. First operand has 178 places, 262 transitions, 2985 flow. Second operand 7 states and 770 transitions. [2021-12-07 01:20:47,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 376 transitions, 5049 flow [2021-12-07 01:20:47,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 376 transitions, 5025 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:47,454 INFO L242 Difference]: Finished difference. Result has 189 places, 318 transitions, 4309 flow [2021-12-07 01:20:47,454 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4309, PETRI_PLACES=189, PETRI_TRANSITIONS=318} [2021-12-07 01:20:47,455 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 77 predicate places. [2021-12-07 01:20:47,455 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 318 transitions, 4309 flow [2021-12-07 01:20:47,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:47,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:47,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:47,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:20:47,455 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1294720481, now seen corresponding path program 2 times [2021-12-07 01:20:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:47,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045113484] [2021-12-07 01:20:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:47,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:47,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:47,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045113484] [2021-12-07 01:20:47,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045113484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:47,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:47,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:47,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954730807] [2021-12-07 01:20:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:47,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:47,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:47,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:47,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 318 transitions, 4309 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:47,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:47,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:47,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:48,323 INFO L129 PetriNetUnfolder]: 720/5056 cut-off events. [2021-12-07 01:20:48,324 INFO L130 PetriNetUnfolder]: For 19999/20161 co-relation queries the response was YES. [2021-12-07 01:20:48,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13768 conditions, 5056 events. 720/5056 cut-off events. For 19999/20161 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 58872 event pairs, 185 based on Foata normal form. 74/4932 useless extension candidates. Maximal degree in co-relation 12040. Up to 553 conditions per place. [2021-12-07 01:20:48,359 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 181 selfloop transitions, 86 changer transitions 9/368 dead transitions. [2021-12-07 01:20:48,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 5269 flow [2021-12-07 01:20:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2021-12-07 01:20:48,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2021-12-07 01:20:48,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2021-12-07 01:20:48,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2021-12-07 01:20:48,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:48,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2021-12-07 01:20:48,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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) [2021-12-07 01:20:48,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:48,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:48,365 INFO L186 Difference]: Start difference. First operand has 189 places, 318 transitions, 4309 flow. Second operand 7 states and 772 transitions. [2021-12-07 01:20:48,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 5269 flow [2021-12-07 01:20:48,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 368 transitions, 5221 flow, removed 24 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:48,434 INFO L242 Difference]: Finished difference. Result has 199 places, 312 transitions, 4434 flow [2021-12-07 01:20:48,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4434, PETRI_PLACES=199, PETRI_TRANSITIONS=312} [2021-12-07 01:20:48,435 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 87 predicate places. [2021-12-07 01:20:48,435 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 312 transitions, 4434 flow [2021-12-07 01:20:48,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:48,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:48,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:48,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:20:48,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash -744274521, now seen corresponding path program 4 times [2021-12-07 01:20:48,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:48,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768503315] [2021-12-07 01:20:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:48,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:48,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768503315] [2021-12-07 01:20:48,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768503315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:48,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:48,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:48,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401739231] [2021-12-07 01:20:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:48,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:48,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:48,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:48,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:48,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 312 transitions, 4434 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:48,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:48,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:48,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:49,149 INFO L129 PetriNetUnfolder]: 673/4601 cut-off events. [2021-12-07 01:20:49,150 INFO L130 PetriNetUnfolder]: For 21241/21382 co-relation queries the response was YES. [2021-12-07 01:20:49,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 4601 events. 673/4601 cut-off events. For 21241/21382 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52341 event pairs, 170 based on Foata normal form. 58/4465 useless extension candidates. Maximal degree in co-relation 11501. Up to 501 conditions per place. [2021-12-07 01:20:49,184 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 173 selfloop transitions, 72 changer transitions 13/350 dead transitions. [2021-12-07 01:20:49,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 350 transitions, 5373 flow [2021-12-07 01:20:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-12-07 01:20:49,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2021-12-07 01:20:49,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-12-07 01:20:49,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-12-07 01:20:49,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:49,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-12-07 01:20:49,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2021-12-07 01:20:49,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:49,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:49,190 INFO L186 Difference]: Start difference. First operand has 199 places, 312 transitions, 4434 flow. Second operand 5 states and 555 transitions. [2021-12-07 01:20:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 350 transitions, 5373 flow [2021-12-07 01:20:49,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 350 transitions, 5369 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:49,274 INFO L242 Difference]: Finished difference. Result has 206 places, 315 transitions, 4755 flow [2021-12-07 01:20:49,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4755, PETRI_PLACES=206, PETRI_TRANSITIONS=315} [2021-12-07 01:20:49,275 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 94 predicate places. [2021-12-07 01:20:49,275 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 315 transitions, 4755 flow [2021-12-07 01:20:49,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:49,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:49,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:49,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:20:49,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash -232835731, now seen corresponding path program 2 times [2021-12-07 01:20:49,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:49,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379916073] [2021-12-07 01:20:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:49,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:49,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:49,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379916073] [2021-12-07 01:20:49,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379916073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:49,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:49,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:49,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093408486] [2021-12-07 01:20:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:49,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:49,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:49,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:49,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 315 transitions, 4755 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:49,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:49,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:49,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:50,189 INFO L129 PetriNetUnfolder]: 709/4904 cut-off events. [2021-12-07 01:20:50,189 INFO L130 PetriNetUnfolder]: For 24768/24935 co-relation queries the response was YES. [2021-12-07 01:20:50,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14290 conditions, 4904 events. 709/4904 cut-off events. For 24768/24935 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 56876 event pairs, 175 based on Foata normal form. 43/4753 useless extension candidates. Maximal degree in co-relation 12292. Up to 535 conditions per place. [2021-12-07 01:20:50,236 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 165 selfloop transitions, 112 changer transitions 5/374 dead transitions. [2021-12-07 01:20:50,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 374 transitions, 6127 flow [2021-12-07 01:20:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2021-12-07 01:20:50,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2021-12-07 01:20:50,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2021-12-07 01:20:50,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2021-12-07 01:20:50,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:50,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2021-12-07 01:20:50,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2021-12-07 01:20:50,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:50,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:50,243 INFO L186 Difference]: Start difference. First operand has 206 places, 315 transitions, 4755 flow. Second operand 7 states and 769 transitions. [2021-12-07 01:20:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 374 transitions, 6127 flow [2021-12-07 01:20:50,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 374 transitions, 6102 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:20:50,354 INFO L242 Difference]: Finished difference. Result has 215 places, 332 transitions, 5513 flow [2021-12-07 01:20:50,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4717, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5513, PETRI_PLACES=215, PETRI_TRANSITIONS=332} [2021-12-07 01:20:50,355 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 103 predicate places. [2021-12-07 01:20:50,355 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 332 transitions, 5513 flow [2021-12-07 01:20:50,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:50,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:50,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:50,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:20:50,356 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1643886317, now seen corresponding path program 3 times [2021-12-07 01:20:50,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:50,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989329427] [2021-12-07 01:20:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:50,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:50,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989329427] [2021-12-07 01:20:50,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989329427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:50,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:50,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:50,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320098936] [2021-12-07 01:20:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:50,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:50,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:50,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:50,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 332 transitions, 5513 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:50,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:50,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:50,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:51,172 INFO L129 PetriNetUnfolder]: 700/4856 cut-off events. [2021-12-07 01:20:51,172 INFO L130 PetriNetUnfolder]: For 28038/28193 co-relation queries the response was YES. [2021-12-07 01:20:51,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 4856 events. 700/4856 cut-off events. For 28038/28193 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 56567 event pairs, 157 based on Foata normal form. 52/4728 useless extension candidates. Maximal degree in co-relation 12529. Up to 575 conditions per place. [2021-12-07 01:20:51,212 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 184 selfloop transitions, 99 changer transitions 4/379 dead transitions. [2021-12-07 01:20:51,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 379 transitions, 6636 flow [2021-12-07 01:20:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2021-12-07 01:20:51,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2021-12-07 01:20:51,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2021-12-07 01:20:51,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2021-12-07 01:20:51,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:51,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2021-12-07 01:20:51,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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) [2021-12-07 01:20:51,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:51,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:51,218 INFO L186 Difference]: Start difference. First operand has 215 places, 332 transitions, 5513 flow. Second operand 7 states and 762 transitions. [2021-12-07 01:20:51,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 379 transitions, 6636 flow [2021-12-07 01:20:51,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 379 transitions, 6600 flow, removed 18 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:51,329 INFO L242 Difference]: Finished difference. Result has 226 places, 341 transitions, 6085 flow [2021-12-07 01:20:51,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5479, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6085, PETRI_PLACES=226, PETRI_TRANSITIONS=341} [2021-12-07 01:20:51,330 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 114 predicate places. [2021-12-07 01:20:51,330 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 341 transitions, 6085 flow [2021-12-07 01:20:51,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:51,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:51,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:51,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:20:51,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:51,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1892319071, now seen corresponding path program 3 times [2021-12-07 01:20:51,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:51,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120414252] [2021-12-07 01:20:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:51,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:51,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120414252] [2021-12-07 01:20:51,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120414252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:51,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:51,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:20:51,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875543709] [2021-12-07 01:20:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:51,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:20:51,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:20:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:20:51,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:51,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 341 transitions, 6085 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-12-07 01:20:51,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:51,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:51,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:52,181 INFO L129 PetriNetUnfolder]: 672/4905 cut-off events. [2021-12-07 01:20:52,181 INFO L130 PetriNetUnfolder]: For 31726/31863 co-relation queries the response was YES. [2021-12-07 01:20:52,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15129 conditions, 4905 events. 672/4905 cut-off events. For 31726/31863 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 57121 event pairs, 182 based on Foata normal form. 61/4751 useless extension candidates. Maximal degree in co-relation 13062. Up to 515 conditions per place. [2021-12-07 01:20:52,217 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 265 selfloop transitions, 45 changer transitions 9/411 dead transitions. [2021-12-07 01:20:52,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 411 transitions, 8042 flow [2021-12-07 01:20:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:20:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-07 01:20:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-12-07 01:20:52,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2021-12-07 01:20:52,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-12-07 01:20:52,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-12-07 01:20:52,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:52,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-12-07 01:20:52,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:20:52,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2021-12-07 01:20:52,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2021-12-07 01:20:52,222 INFO L186 Difference]: Start difference. First operand has 226 places, 341 transitions, 6085 flow. Second operand 4 states and 443 transitions. [2021-12-07 01:20:52,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 411 transitions, 8042 flow [2021-12-07 01:20:52,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 411 transitions, 7978 flow, removed 32 selfloop flow, removed 0 redundant places. [2021-12-07 01:20:52,346 INFO L242 Difference]: Finished difference. Result has 232 places, 350 transitions, 6337 flow [2021-12-07 01:20:52,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6337, PETRI_PLACES=232, PETRI_TRANSITIONS=350} [2021-12-07 01:20:52,346 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 120 predicate places. [2021-12-07 01:20:52,347 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 350 transitions, 6337 flow [2021-12-07 01:20:52,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-12-07 01:20:52,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:52,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:52,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:20:52,347 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash -52316731, now seen corresponding path program 4 times [2021-12-07 01:20:52,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242452364] [2021-12-07 01:20:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:52,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242452364] [2021-12-07 01:20:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242452364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:52,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:52,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:52,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575851986] [2021-12-07 01:20:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:52,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:52,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:52,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:52,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 350 transitions, 6337 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:52,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:52,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:52,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:53,262 INFO L129 PetriNetUnfolder]: 760/5573 cut-off events. [2021-12-07 01:20:53,262 INFO L130 PetriNetUnfolder]: For 32717/32925 co-relation queries the response was YES. [2021-12-07 01:20:53,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 5573 events. 760/5573 cut-off events. For 32717/32925 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 66635 event pairs, 247 based on Foata normal form. 55/5384 useless extension candidates. Maximal degree in co-relation 14173. Up to 849 conditions per place. [2021-12-07 01:20:53,311 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 268 selfloop transitions, 31 changer transitions 4/395 dead transitions. [2021-12-07 01:20:53,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 395 transitions, 7768 flow [2021-12-07 01:20:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2021-12-07 01:20:53,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2021-12-07 01:20:53,313 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2021-12-07 01:20:53,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2021-12-07 01:20:53,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:53,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2021-12-07 01:20:53,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-12-07 01:20:53,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:53,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:53,316 INFO L186 Difference]: Start difference. First operand has 232 places, 350 transitions, 6337 flow. Second operand 5 states and 539 transitions. [2021-12-07 01:20:53,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 395 transitions, 7768 flow [2021-12-07 01:20:53,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 395 transitions, 7717 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:20:53,469 INFO L242 Difference]: Finished difference. Result has 238 places, 362 transitions, 6702 flow [2021-12-07 01:20:53,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6291, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6702, PETRI_PLACES=238, PETRI_TRANSITIONS=362} [2021-12-07 01:20:53,469 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 126 predicate places. [2021-12-07 01:20:53,470 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 362 transitions, 6702 flow [2021-12-07 01:20:53,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:53,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:53,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:53,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:20:53,470 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash -978243713, now seen corresponding path program 4 times [2021-12-07 01:20:53,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430034324] [2021-12-07 01:20:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:53,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:53,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:53,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430034324] [2021-12-07 01:20:53,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430034324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:53,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:53,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:53,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445438645] [2021-12-07 01:20:53,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:53,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:53,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:53,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:53,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:53,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 362 transitions, 6702 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:53,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:53,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:53,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:54,363 INFO L129 PetriNetUnfolder]: 736/5682 cut-off events. [2021-12-07 01:20:54,363 INFO L130 PetriNetUnfolder]: For 33846/34047 co-relation queries the response was YES. [2021-12-07 01:20:54,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17073 conditions, 5682 events. 736/5682 cut-off events. For 33846/34047 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 68807 event pairs, 164 based on Foata normal form. 62/5520 useless extension candidates. Maximal degree in co-relation 16385. Up to 612 conditions per place. [2021-12-07 01:20:54,414 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 213 selfloop transitions, 88 changer transitions 1/394 dead transitions. [2021-12-07 01:20:54,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 394 transitions, 7739 flow [2021-12-07 01:20:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-12-07 01:20:54,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2021-12-07 01:20:54,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-12-07 01:20:54,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-12-07 01:20:54,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:54,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-12-07 01:20:54,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2021-12-07 01:20:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:54,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:54,418 INFO L186 Difference]: Start difference. First operand has 238 places, 362 transitions, 6702 flow. Second operand 5 states and 546 transitions. [2021-12-07 01:20:54,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 394 transitions, 7739 flow [2021-12-07 01:20:54,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 394 transitions, 7717 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-07 01:20:54,579 INFO L242 Difference]: Finished difference. Result has 244 places, 366 transitions, 7101 flow [2021-12-07 01:20:54,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7101, PETRI_PLACES=244, PETRI_TRANSITIONS=366} [2021-12-07 01:20:54,580 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 132 predicate places. [2021-12-07 01:20:54,580 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 366 transitions, 7101 flow [2021-12-07 01:20:54,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:54,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:54,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:54,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:20:54,581 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1768497855, now seen corresponding path program 3 times [2021-12-07 01:20:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880945099] [2021-12-07 01:20:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:54,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:54,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880945099] [2021-12-07 01:20:54,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880945099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:54,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:54,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32090578] [2021-12-07 01:20:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:54,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:54,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:54,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:54,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 366 transitions, 7101 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:54,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:54,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:54,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:55,613 INFO L129 PetriNetUnfolder]: 766/6158 cut-off events. [2021-12-07 01:20:55,613 INFO L130 PetriNetUnfolder]: For 38182/38446 co-relation queries the response was YES. [2021-12-07 01:20:55,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18281 conditions, 6158 events. 766/6158 cut-off events. For 38182/38446 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 76197 event pairs, 252 based on Foata normal form. 59/5952 useless extension candidates. Maximal degree in co-relation 17620. Up to 882 conditions per place. [2021-12-07 01:20:55,659 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 273 selfloop transitions, 37 changer transitions 4/406 dead transitions. [2021-12-07 01:20:55,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 406 transitions, 8467 flow [2021-12-07 01:20:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:20:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:20:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2021-12-07 01:20:55,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2021-12-07 01:20:55,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2021-12-07 01:20:55,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2021-12-07 01:20:55,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:55,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2021-12-07 01:20:55,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-12-07 01:20:55,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:55,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:20:55,663 INFO L186 Difference]: Start difference. First operand has 244 places, 366 transitions, 7101 flow. Second operand 5 states and 539 transitions. [2021-12-07 01:20:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 406 transitions, 8467 flow [2021-12-07 01:20:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 406 transitions, 8408 flow, removed 9 selfloop flow, removed 1 redundant places. [2021-12-07 01:20:55,844 INFO L242 Difference]: Finished difference. Result has 250 places, 381 transitions, 7576 flow [2021-12-07 01:20:55,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7046, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7576, PETRI_PLACES=250, PETRI_TRANSITIONS=381} [2021-12-07 01:20:55,845 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 138 predicate places. [2021-12-07 01:20:55,845 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 381 transitions, 7576 flow [2021-12-07 01:20:55,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:55,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:55,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:55,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:20:55,846 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:55,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash -831062739, now seen corresponding path program 5 times [2021-12-07 01:20:55,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092533656] [2021-12-07 01:20:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:55,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:55,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092533656] [2021-12-07 01:20:55,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092533656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:55,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:55,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:55,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872205331] [2021-12-07 01:20:55,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:55,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:55,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:55,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:55,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 381 transitions, 7576 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:55,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:55,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:55,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:56,950 INFO L129 PetriNetUnfolder]: 770/6200 cut-off events. [2021-12-07 01:20:56,950 INFO L130 PetriNetUnfolder]: For 39500/39746 co-relation queries the response was YES. [2021-12-07 01:20:56,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18606 conditions, 6200 events. 770/6200 cut-off events. For 39500/39746 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 76930 event pairs, 186 based on Foata normal form. 66/6006 useless extension candidates. Maximal degree in co-relation 18021. Up to 667 conditions per place. [2021-12-07 01:20:57,009 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 226 selfloop transitions, 98 changer transitions 6/422 dead transitions. [2021-12-07 01:20:57,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 422 transitions, 8709 flow [2021-12-07 01:20:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:20:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-07 01:20:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2021-12-07 01:20:57,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2021-12-07 01:20:57,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2021-12-07 01:20:57,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2021-12-07 01:20:57,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:57,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2021-12-07 01:20:57,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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) [2021-12-07 01:20:57,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:57,018 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2021-12-07 01:20:57,018 INFO L186 Difference]: Start difference. First operand has 250 places, 381 transitions, 7576 flow. Second operand 7 states and 762 transitions. [2021-12-07 01:20:57,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 422 transitions, 8709 flow [2021-12-07 01:20:57,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 422 transitions, 8668 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-07 01:20:57,258 INFO L242 Difference]: Finished difference. Result has 257 places, 383 transitions, 7886 flow [2021-12-07 01:20:57,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7540, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7886, PETRI_PLACES=257, PETRI_TRANSITIONS=383} [2021-12-07 01:20:57,259 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2021-12-07 01:20:57,259 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 383 transitions, 7886 flow [2021-12-07 01:20:57,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:57,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:57,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:57,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:20:57,260 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:57,260 INFO L85 PathProgramCache]: Analyzing trace with hash -372403359, now seen corresponding path program 6 times [2021-12-07 01:20:57,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:57,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16608784] [2021-12-07 01:20:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:57,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:57,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:57,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16608784] [2021-12-07 01:20:57,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16608784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:57,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:57,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:57,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134942348] [2021-12-07 01:20:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:57,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:57,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:57,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:57,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 383 transitions, 7886 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:57,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:57,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:57,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:58,460 INFO L129 PetriNetUnfolder]: 775/6162 cut-off events. [2021-12-07 01:20:58,460 INFO L130 PetriNetUnfolder]: For 43080/43347 co-relation queries the response was YES. [2021-12-07 01:20:58,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18686 conditions, 6162 events. 775/6162 cut-off events. For 43080/43347 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 76111 event pairs, 204 based on Foata normal form. 66/5968 useless extension candidates. Maximal degree in co-relation 17962. Up to 683 conditions per place. [2021-12-07 01:20:58,519 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 216 selfloop transitions, 97 changer transitions 6/411 dead transitions. [2021-12-07 01:20:58,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 411 transitions, 8793 flow [2021-12-07 01:20:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:20:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:20:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2021-12-07 01:20:58,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2021-12-07 01:20:58,520 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2021-12-07 01:20:58,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2021-12-07 01:20:58,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:58,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2021-12-07 01:20:58,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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) [2021-12-07 01:20:58,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:20:58,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:20:58,523 INFO L186 Difference]: Start difference. First operand has 257 places, 383 transitions, 7886 flow. Second operand 6 states and 661 transitions. [2021-12-07 01:20:58,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 411 transitions, 8793 flow [2021-12-07 01:20:58,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 411 transitions, 8677 flow, removed 20 selfloop flow, removed 2 redundant places. [2021-12-07 01:20:58,740 INFO L242 Difference]: Finished difference. Result has 261 places, 379 transitions, 7918 flow [2021-12-07 01:20:58,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7696, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7918, PETRI_PLACES=261, PETRI_TRANSITIONS=379} [2021-12-07 01:20:58,741 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 149 predicate places. [2021-12-07 01:20:58,741 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 379 transitions, 7918 flow [2021-12-07 01:20:58,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:58,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:20:58,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:58,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:20:58,742 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:20:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -966326439, now seen corresponding path program 4 times [2021-12-07 01:20:58,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:58,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326413602] [2021-12-07 01:20:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:58,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:58,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:58,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326413602] [2021-12-07 01:20:58,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326413602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:20:58,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:20:58,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:20:58,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813186085] [2021-12-07 01:20:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:20:58,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:20:58,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:20:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:20:58,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:20:58,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 379 transitions, 7918 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:20:58,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:20:58,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:20:58,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:20:59,842 INFO L129 PetriNetUnfolder]: 724/5804 cut-off events. [2021-12-07 01:20:59,842 INFO L130 PetriNetUnfolder]: For 42304/42523 co-relation queries the response was YES. [2021-12-07 01:20:59,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18048 conditions, 5804 events. 724/5804 cut-off events. For 42304/42523 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 71053 event pairs, 223 based on Foata normal form. 53/5605 useless extension candidates. Maximal degree in co-relation 17452. Up to 604 conditions per place. [2021-12-07 01:20:59,888 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 257 selfloop transitions, 62 changer transitions 4/415 dead transitions. [2021-12-07 01:20:59,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 415 transitions, 9068 flow [2021-12-07 01:20:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:20:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:20:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2021-12-07 01:20:59,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-07 01:20:59,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 654 transitions. [2021-12-07 01:20:59,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 654 transitions. [2021-12-07 01:20:59,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:20:59,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 654 transitions. [2021-12-07 01:20:59,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2021-12-07 01:20:59,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:20:59,892 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:20:59,892 INFO L186 Difference]: Start difference. First operand has 261 places, 379 transitions, 7918 flow. Second operand 6 states and 654 transitions. [2021-12-07 01:20:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 415 transitions, 9068 flow [2021-12-07 01:21:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 415 transitions, 8958 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-12-07 01:21:00,085 INFO L242 Difference]: Finished difference. Result has 265 places, 384 transitions, 8106 flow [2021-12-07 01:21:00,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7769, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8106, PETRI_PLACES=265, PETRI_TRANSITIONS=384} [2021-12-07 01:21:00,086 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 153 predicate places. [2021-12-07 01:21:00,086 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 384 transitions, 8106 flow [2021-12-07 01:21:00,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:00,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:00,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:00,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:21:00,087 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:00,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1184424761, now seen corresponding path program 5 times [2021-12-07 01:21:00,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:00,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704989907] [2021-12-07 01:21:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:00,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:00,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:00,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704989907] [2021-12-07 01:21:00,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704989907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:00,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:00,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:00,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475888639] [2021-12-07 01:21:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:00,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:00,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:00,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:00,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 384 transitions, 8106 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:00,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:00,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:00,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:01,235 INFO L129 PetriNetUnfolder]: 778/6312 cut-off events. [2021-12-07 01:21:01,235 INFO L130 PetriNetUnfolder]: For 43040/43285 co-relation queries the response was YES. [2021-12-07 01:21:01,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19261 conditions, 6312 events. 778/6312 cut-off events. For 43040/43285 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 78438 event pairs, 212 based on Foata normal form. 64/6113 useless extension candidates. Maximal degree in co-relation 18693. Up to 667 conditions per place. [2021-12-07 01:21:01,297 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 248 selfloop transitions, 88 changer transitions 4/432 dead transitions. [2021-12-07 01:21:01,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 432 transitions, 9558 flow [2021-12-07 01:21:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:21:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:21:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2021-12-07 01:21:01,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2021-12-07 01:21:01,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2021-12-07 01:21:01,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2021-12-07 01:21:01,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:01,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2021-12-07 01:21:01,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 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) [2021-12-07 01:21:01,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:01,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:01,301 INFO L186 Difference]: Start difference. First operand has 265 places, 384 transitions, 8106 flow. Second operand 6 states and 658 transitions. [2021-12-07 01:21:01,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 432 transitions, 9558 flow [2021-12-07 01:21:01,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 432 transitions, 9548 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-12-07 01:21:01,541 INFO L242 Difference]: Finished difference. Result has 273 places, 394 transitions, 8562 flow [2021-12-07 01:21:01,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8066, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8562, PETRI_PLACES=273, PETRI_TRANSITIONS=394} [2021-12-07 01:21:01,542 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2021-12-07 01:21:01,542 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 394 transitions, 8562 flow [2021-12-07 01:21:01,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:01,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:01,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:01,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:21:01,543 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1520430895, now seen corresponding path program 5 times [2021-12-07 01:21:01,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:01,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079941556] [2021-12-07 01:21:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:01,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:01,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:01,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079941556] [2021-12-07 01:21:01,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079941556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:01,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:01,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:01,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040050707] [2021-12-07 01:21:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:01,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:01,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:01,595 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:01,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 394 transitions, 8562 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:01,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:01,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:01,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:02,607 INFO L129 PetriNetUnfolder]: 753/6098 cut-off events. [2021-12-07 01:21:02,607 INFO L130 PetriNetUnfolder]: For 48249/48465 co-relation queries the response was YES. [2021-12-07 01:21:02,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19018 conditions, 6098 events. 753/6098 cut-off events. For 48249/48465 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75330 event pairs, 217 based on Foata normal form. 61/5907 useless extension candidates. Maximal degree in co-relation 18490. Up to 647 conditions per place. [2021-12-07 01:21:02,664 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 236 selfloop transitions, 87 changer transitions 1/416 dead transitions. [2021-12-07 01:21:02,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 416 transitions, 9468 flow [2021-12-07 01:21:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-07 01:21:02,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-07 01:21:02,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-07 01:21:02,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-07 01:21:02,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:02,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-07 01:21:02,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2021-12-07 01:21:02,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:02,668 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:02,668 INFO L186 Difference]: Start difference. First operand has 273 places, 394 transitions, 8562 flow. Second operand 5 states and 545 transitions. [2021-12-07 01:21:02,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 416 transitions, 9468 flow [2021-12-07 01:21:02,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 416 transitions, 9434 flow, removed 17 selfloop flow, removed 0 redundant places. [2021-12-07 01:21:02,902 INFO L242 Difference]: Finished difference. Result has 279 places, 395 transitions, 8791 flow [2021-12-07 01:21:02,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8530, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8791, PETRI_PLACES=279, PETRI_TRANSITIONS=395} [2021-12-07 01:21:02,903 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2021-12-07 01:21:02,903 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 395 transitions, 8791 flow [2021-12-07 01:21:02,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:02,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:02,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:02,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:21:02,904 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1371312475, now seen corresponding path program 7 times [2021-12-07 01:21:02,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:02,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494049273] [2021-12-07 01:21:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:02,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:02,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:02,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494049273] [2021-12-07 01:21:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494049273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:02,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:02,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:02,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230263229] [2021-12-07 01:21:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:02,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:02,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:02,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 395 transitions, 8791 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:02,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:02,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:02,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:03,972 INFO L129 PetriNetUnfolder]: 740/6070 cut-off events. [2021-12-07 01:21:03,972 INFO L130 PetriNetUnfolder]: For 49265/49506 co-relation queries the response was YES. [2021-12-07 01:21:04,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19077 conditions, 6070 events. 740/6070 cut-off events. For 49265/49506 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 74965 event pairs, 176 based on Foata normal form. 69/5886 useless extension candidates. Maximal degree in co-relation 18487. Up to 630 conditions per place. [2021-12-07 01:21:04,037 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 252 selfloop transitions, 69 changer transitions 2/415 dead transitions. [2021-12-07 01:21:04,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 415 transitions, 9600 flow [2021-12-07 01:21:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2021-12-07 01:21:04,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2021-12-07 01:21:04,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2021-12-07 01:21:04,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2021-12-07 01:21:04,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:04,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2021-12-07 01:21:04,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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) [2021-12-07 01:21:04,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:04,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:04,041 INFO L186 Difference]: Start difference. First operand has 279 places, 395 transitions, 8791 flow. Second operand 5 states and 544 transitions. [2021-12-07 01:21:04,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 415 transitions, 9600 flow [2021-12-07 01:21:04,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 415 transitions, 9437 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-12-07 01:21:04,315 INFO L242 Difference]: Finished difference. Result has 281 places, 393 transitions, 8728 flow [2021-12-07 01:21:04,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8551, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8728, PETRI_PLACES=281, PETRI_TRANSITIONS=393} [2021-12-07 01:21:04,316 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 169 predicate places. [2021-12-07 01:21:04,316 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 393 transitions, 8728 flow [2021-12-07 01:21:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:04,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:04,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:04,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:21:04,316 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1625849201, now seen corresponding path program 6 times [2021-12-07 01:21:04,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:04,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130427245] [2021-12-07 01:21:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:04,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:04,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130427245] [2021-12-07 01:21:04,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130427245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:04,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:04,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:04,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055451280] [2021-12-07 01:21:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:04,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:04,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:04,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:04,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 393 transitions, 8728 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:04,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:04,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:04,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:05,339 INFO L129 PetriNetUnfolder]: 709/5937 cut-off events. [2021-12-07 01:21:05,339 INFO L130 PetriNetUnfolder]: For 51971/52200 co-relation queries the response was YES. [2021-12-07 01:21:05,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18537 conditions, 5937 events. 709/5937 cut-off events. For 51971/52200 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 73599 event pairs, 204 based on Foata normal form. 70/5780 useless extension candidates. Maximal degree in co-relation 18005. Up to 601 conditions per place. [2021-12-07 01:21:05,404 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 231 selfloop transitions, 87 changer transitions 7/417 dead transitions. [2021-12-07 01:21:05,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 417 transitions, 9469 flow [2021-12-07 01:21:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:21:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:21:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2021-12-07 01:21:05,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2021-12-07 01:21:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2021-12-07 01:21:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2021-12-07 01:21:05,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:05,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2021-12-07 01:21:05,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:21:05,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:05,407 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:05,408 INFO L186 Difference]: Start difference. First operand has 281 places, 393 transitions, 8728 flow. Second operand 6 states and 660 transitions. [2021-12-07 01:21:05,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 417 transitions, 9469 flow [2021-12-07 01:21:05,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 417 transitions, 9356 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-12-07 01:21:05,662 INFO L242 Difference]: Finished difference. Result has 285 places, 382 transitions, 8453 flow [2021-12-07 01:21:05,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8453, PETRI_PLACES=285, PETRI_TRANSITIONS=382} [2021-12-07 01:21:05,663 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 173 predicate places. [2021-12-07 01:21:05,663 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 382 transitions, 8453 flow [2021-12-07 01:21:05,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:05,663 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:05,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:05,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:21:05,664 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash 132679197, now seen corresponding path program 8 times [2021-12-07 01:21:05,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:05,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46832300] [2021-12-07 01:21:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:05,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:05,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46832300] [2021-12-07 01:21:05,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46832300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:05,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:05,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:05,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017826048] [2021-12-07 01:21:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:05,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:05,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:05,718 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:05,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 382 transitions, 8453 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:05,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:05,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:05,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:06,792 INFO L129 PetriNetUnfolder]: 746/6149 cut-off events. [2021-12-07 01:21:06,792 INFO L130 PetriNetUnfolder]: For 53297/53525 co-relation queries the response was YES. [2021-12-07 01:21:06,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 6149 events. 746/6149 cut-off events. For 53297/53525 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 76450 event pairs, 229 based on Foata normal form. 64/5966 useless extension candidates. Maximal degree in co-relation 18730. Up to 621 conditions per place. [2021-12-07 01:21:06,845 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 244 selfloop transitions, 82 changer transitions 1/419 dead transitions. [2021-12-07 01:21:06,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 419 transitions, 9860 flow [2021-12-07 01:21:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-07 01:21:06,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-07 01:21:06,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-07 01:21:06,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-07 01:21:06,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:06,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-07 01:21:06,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2021-12-07 01:21:06,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:06,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:06,849 INFO L186 Difference]: Start difference. First operand has 285 places, 382 transitions, 8453 flow. Second operand 5 states and 545 transitions. [2021-12-07 01:21:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 419 transitions, 9860 flow [2021-12-07 01:21:07,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 419 transitions, 9690 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-07 01:21:07,111 INFO L242 Difference]: Finished difference. Result has 287 places, 399 transitions, 9110 flow [2021-12-07 01:21:07,111 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8300, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9110, PETRI_PLACES=287, PETRI_TRANSITIONS=399} [2021-12-07 01:21:07,112 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 175 predicate places. [2021-12-07 01:21:07,112 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 399 transitions, 9110 flow [2021-12-07 01:21:07,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:07,112 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:07,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:07,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:21:07,112 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1298049035, now seen corresponding path program 9 times [2021-12-07 01:21:07,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:07,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460139960] [2021-12-07 01:21:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:07,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:07,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460139960] [2021-12-07 01:21:07,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460139960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:07,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:07,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:07,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622522532] [2021-12-07 01:21:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:07,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:07,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:07,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:07,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 399 transitions, 9110 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:07,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:07,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:07,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:08,188 INFO L129 PetriNetUnfolder]: 739/6098 cut-off events. [2021-12-07 01:21:08,188 INFO L130 PetriNetUnfolder]: For 55065/55285 co-relation queries the response was YES. [2021-12-07 01:21:08,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19268 conditions, 6098 events. 739/6098 cut-off events. For 55065/55285 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 75666 event pairs, 223 based on Foata normal form. 59/5911 useless extension candidates. Maximal degree in co-relation 18673. Up to 619 conditions per place. [2021-12-07 01:21:08,253 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 238 selfloop transitions, 88 changer transitions 0/418 dead transitions. [2021-12-07 01:21:08,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 418 transitions, 9955 flow [2021-12-07 01:21:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2021-12-07 01:21:08,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885483870967742 [2021-12-07 01:21:08,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2021-12-07 01:21:08,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2021-12-07 01:21:08,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:08,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2021-12-07 01:21:08,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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) [2021-12-07 01:21:08,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:08,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:08,256 INFO L186 Difference]: Start difference. First operand has 287 places, 399 transitions, 9110 flow. Second operand 5 states and 549 transitions. [2021-12-07 01:21:08,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 418 transitions, 9955 flow [2021-12-07 01:21:08,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 418 transitions, 9896 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-12-07 01:21:08,544 INFO L242 Difference]: Finished difference. Result has 291 places, 400 transitions, 9286 flow [2021-12-07 01:21:08,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9012, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9286, PETRI_PLACES=291, PETRI_TRANSITIONS=400} [2021-12-07 01:21:08,544 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2021-12-07 01:21:08,544 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 400 transitions, 9286 flow [2021-12-07 01:21:08,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:08,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:08,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:08,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 01:21:08,545 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:08,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash 556338835, now seen corresponding path program 7 times [2021-12-07 01:21:08,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:08,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206194765] [2021-12-07 01:21:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:08,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:08,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206194765] [2021-12-07 01:21:08,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206194765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:08,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:08,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:08,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152484579] [2021-12-07 01:21:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:08,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:08,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:08,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:08,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 400 transitions, 9286 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:08,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:08,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:08,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:09,722 INFO L129 PetriNetUnfolder]: 783/6438 cut-off events. [2021-12-07 01:21:09,722 INFO L130 PetriNetUnfolder]: For 53594/53849 co-relation queries the response was YES. [2021-12-07 01:21:09,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20379 conditions, 6438 events. 783/6438 cut-off events. For 53594/53849 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 80532 event pairs, 217 based on Foata normal form. 66/6225 useless extension candidates. Maximal degree in co-relation 19767. Up to 678 conditions per place. [2021-12-07 01:21:09,785 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 272 selfloop transitions, 74 changer transitions 6/444 dead transitions. [2021-12-07 01:21:09,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 444 transitions, 10890 flow [2021-12-07 01:21:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-07 01:21:09,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-07 01:21:09,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-07 01:21:09,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-07 01:21:09,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:09,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-07 01:21:09,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2021-12-07 01:21:09,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:09,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:09,787 INFO L186 Difference]: Start difference. First operand has 291 places, 400 transitions, 9286 flow. Second operand 5 states and 545 transitions. [2021-12-07 01:21:09,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 444 transitions, 10890 flow [2021-12-07 01:21:10,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 444 transitions, 10778 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-07 01:21:10,094 INFO L242 Difference]: Finished difference. Result has 297 places, 415 transitions, 9984 flow [2021-12-07 01:21:10,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9182, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9984, PETRI_PLACES=297, PETRI_TRANSITIONS=415} [2021-12-07 01:21:10,094 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 185 predicate places. [2021-12-07 01:21:10,094 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 415 transitions, 9984 flow [2021-12-07 01:21:10,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:10,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:10,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:10,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 01:21:10,095 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash 641477587, now seen corresponding path program 8 times [2021-12-07 01:21:10,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:10,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489748707] [2021-12-07 01:21:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:10,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:10,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:10,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489748707] [2021-12-07 01:21:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489748707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:10,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:10,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:10,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909277700] [2021-12-07 01:21:10,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:10,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:10,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:10,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 415 transitions, 9984 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:10,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:10,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:10,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:11,277 INFO L129 PetriNetUnfolder]: 787/6442 cut-off events. [2021-12-07 01:21:11,277 INFO L130 PetriNetUnfolder]: For 56091/56353 co-relation queries the response was YES. [2021-12-07 01:21:11,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20623 conditions, 6442 events. 787/6442 cut-off events. For 56091/56353 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 80537 event pairs, 200 based on Foata normal form. 68/6239 useless extension candidates. Maximal degree in co-relation 20003. Up to 685 conditions per place. [2021-12-07 01:21:11,369 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 265 selfloop transitions, 81 changer transitions 7/445 dead transitions. [2021-12-07 01:21:11,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 445 transitions, 11114 flow [2021-12-07 01:21:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-07 01:21:11,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-07 01:21:11,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-07 01:21:11,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-07 01:21:11,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:11,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-07 01:21:11,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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) [2021-12-07 01:21:11,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:11,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:11,373 INFO L186 Difference]: Start difference. First operand has 297 places, 415 transitions, 9984 flow. Second operand 5 states and 551 transitions. [2021-12-07 01:21:11,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 445 transitions, 11114 flow [2021-12-07 01:21:11,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 445 transitions, 11098 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-12-07 01:21:11,691 INFO L242 Difference]: Finished difference. Result has 302 places, 418 transitions, 10247 flow [2021-12-07 01:21:11,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9922, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10247, PETRI_PLACES=302, PETRI_TRANSITIONS=418} [2021-12-07 01:21:11,691 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 190 predicate places. [2021-12-07 01:21:11,692 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 418 transitions, 10247 flow [2021-12-07 01:21:11,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:11,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:11,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:11,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 01:21:11,692 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1022397627, now seen corresponding path program 6 times [2021-12-07 01:21:11,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:11,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677600669] [2021-12-07 01:21:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:11,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:11,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:11,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677600669] [2021-12-07 01:21:11,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677600669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:11,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:11,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:11,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015186570] [2021-12-07 01:21:11,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:11,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:11,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:11,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:11,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 418 transitions, 10247 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:11,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:11,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:11,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:12,952 INFO L129 PetriNetUnfolder]: 823/6810 cut-off events. [2021-12-07 01:21:12,952 INFO L130 PetriNetUnfolder]: For 61281/61592 co-relation queries the response was YES. [2021-12-07 01:21:13,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21609 conditions, 6810 events. 823/6810 cut-off events. For 61281/61592 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 86285 event pairs, 238 based on Foata normal form. 73/6610 useless extension candidates. Maximal degree in co-relation 20930. Up to 719 conditions per place. [2021-12-07 01:21:13,031 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 268 selfloop transitions, 88 changer transitions 2/450 dead transitions. [2021-12-07 01:21:13,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 450 transitions, 11584 flow [2021-12-07 01:21:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-12-07 01:21:13,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2021-12-07 01:21:13,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-12-07 01:21:13,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-12-07 01:21:13,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:13,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-12-07 01:21:13,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2021-12-07 01:21:13,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:13,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:13,034 INFO L186 Difference]: Start difference. First operand has 302 places, 418 transitions, 10247 flow. Second operand 5 states and 546 transitions. [2021-12-07 01:21:13,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 450 transitions, 11584 flow [2021-12-07 01:21:13,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 450 transitions, 11514 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-07 01:21:13,417 INFO L242 Difference]: Finished difference. Result has 305 places, 425 transitions, 10727 flow [2021-12-07 01:21:13,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10143, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10727, PETRI_PLACES=305, PETRI_TRANSITIONS=425} [2021-12-07 01:21:13,417 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 193 predicate places. [2021-12-07 01:21:13,418 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 425 transitions, 10727 flow [2021-12-07 01:21:13,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:13,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:13,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:13,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 01:21:13,418 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash -750301087, now seen corresponding path program 7 times [2021-12-07 01:21:13,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:13,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139151668] [2021-12-07 01:21:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:13,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139151668] [2021-12-07 01:21:13,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139151668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:13,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:13,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:13,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224966178] [2021-12-07 01:21:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:13,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:13,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:13,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:13,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 425 transitions, 10727 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:13,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:13,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:13,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:14,825 INFO L129 PetriNetUnfolder]: 819/6801 cut-off events. [2021-12-07 01:21:14,825 INFO L130 PetriNetUnfolder]: For 65014/65325 co-relation queries the response was YES. [2021-12-07 01:21:14,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21729 conditions, 6801 events. 819/6801 cut-off events. For 65014/65325 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 86059 event pairs, 258 based on Foata normal form. 75/6598 useless extension candidates. Maximal degree in co-relation 21023. Up to 716 conditions per place. [2021-12-07 01:21:14,905 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 269 selfloop transitions, 82 changer transitions 0/443 dead transitions. [2021-12-07 01:21:14,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 443 transitions, 11615 flow [2021-12-07 01:21:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2021-12-07 01:21:14,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2021-12-07 01:21:14,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2021-12-07 01:21:14,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2021-12-07 01:21:14,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:14,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2021-12-07 01:21:14,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 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) [2021-12-07 01:21:14,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:14,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:14,908 INFO L186 Difference]: Start difference. First operand has 305 places, 425 transitions, 10727 flow. Second operand 5 states and 541 transitions. [2021-12-07 01:21:14,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 443 transitions, 11615 flow [2021-12-07 01:21:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 443 transitions, 11541 flow, removed 17 selfloop flow, removed 1 redundant places. [2021-12-07 01:21:15,312 INFO L242 Difference]: Finished difference. Result has 309 places, 428 transitions, 10932 flow [2021-12-07 01:21:15,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10630, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10932, PETRI_PLACES=309, PETRI_TRANSITIONS=428} [2021-12-07 01:21:15,313 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 197 predicate places. [2021-12-07 01:21:15,313 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 428 transitions, 10932 flow [2021-12-07 01:21:15,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:15,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:15,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:15,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-07 01:21:15,314 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1505590051, now seen corresponding path program 5 times [2021-12-07 01:21:15,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:15,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202875147] [2021-12-07 01:21:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:15,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:15,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202875147] [2021-12-07 01:21:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202875147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:15,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:15,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:15,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007387980] [2021-12-07 01:21:15,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:15,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:15,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 428 transitions, 10932 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:15,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:15,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:15,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:16,604 INFO L129 PetriNetUnfolder]: 801/6606 cut-off events. [2021-12-07 01:21:16,605 INFO L130 PetriNetUnfolder]: For 64262/64546 co-relation queries the response was YES. [2021-12-07 01:21:16,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21500 conditions, 6606 events. 801/6606 cut-off events. For 64262/64546 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 83035 event pairs, 221 based on Foata normal form. 72/6399 useless extension candidates. Maximal degree in co-relation 20792. Up to 696 conditions per place. [2021-12-07 01:21:16,717 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 267 selfloop transitions, 89 changer transitions 1/449 dead transitions. [2021-12-07 01:21:16,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 449 transitions, 11893 flow [2021-12-07 01:21:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2021-12-07 01:21:16,718 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2021-12-07 01:21:16,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2021-12-07 01:21:16,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2021-12-07 01:21:16,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:16,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2021-12-07 01:21:16,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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) [2021-12-07 01:21:16,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:16,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:16,720 INFO L186 Difference]: Start difference. First operand has 309 places, 428 transitions, 10932 flow. Second operand 5 states and 544 transitions. [2021-12-07 01:21:16,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 449 transitions, 11893 flow [2021-12-07 01:21:17,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 449 transitions, 11829 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-12-07 01:21:17,137 INFO L242 Difference]: Finished difference. Result has 314 places, 428 transitions, 11093 flow [2021-12-07 01:21:17,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10830, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11093, PETRI_PLACES=314, PETRI_TRANSITIONS=428} [2021-12-07 01:21:17,137 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 202 predicate places. [2021-12-07 01:21:17,138 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 428 transitions, 11093 flow [2021-12-07 01:21:17,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:17,138 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:17,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:17,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 01:21:17,138 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash -455499071, now seen corresponding path program 6 times [2021-12-07 01:21:17,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036266875] [2021-12-07 01:21:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:17,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:17,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036266875] [2021-12-07 01:21:17,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036266875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:17,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:17,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619388995] [2021-12-07 01:21:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:17,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:17,186 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:17,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 428 transitions, 11093 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:17,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:17,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:17,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:18,462 INFO L129 PetriNetUnfolder]: 816/6839 cut-off events. [2021-12-07 01:21:18,462 INFO L130 PetriNetUnfolder]: For 71493/71816 co-relation queries the response was YES. [2021-12-07 01:21:18,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22125 conditions, 6839 events. 816/6839 cut-off events. For 71493/71816 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 87057 event pairs, 245 based on Foata normal form. 87/6639 useless extension candidates. Maximal degree in co-relation 20998. Up to 703 conditions per place. [2021-12-07 01:21:18,540 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 263 selfloop transitions, 94 changer transitions 8/457 dead transitions. [2021-12-07 01:21:18,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 457 transitions, 12244 flow [2021-12-07 01:21:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2021-12-07 01:21:18,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8935483870967742 [2021-12-07 01:21:18,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2021-12-07 01:21:18,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2021-12-07 01:21:18,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:18,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2021-12-07 01:21:18,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2021-12-07 01:21:18,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:18,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:18,544 INFO L186 Difference]: Start difference. First operand has 314 places, 428 transitions, 11093 flow. Second operand 5 states and 554 transitions. [2021-12-07 01:21:18,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 457 transitions, 12244 flow [2021-12-07 01:21:18,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 457 transitions, 12188 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-12-07 01:21:18,976 INFO L242 Difference]: Finished difference. Result has 320 places, 427 transitions, 11265 flow [2021-12-07 01:21:18,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10801, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11265, PETRI_PLACES=320, PETRI_TRANSITIONS=427} [2021-12-07 01:21:18,977 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 208 predicate places. [2021-12-07 01:21:18,977 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 427 transitions, 11265 flow [2021-12-07 01:21:18,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:18,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:18,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:18,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-07 01:21:18,977 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1470453137, now seen corresponding path program 7 times [2021-12-07 01:21:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390848131] [2021-12-07 01:21:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:18,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:19,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:19,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390848131] [2021-12-07 01:21:19,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390848131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:19,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:19,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:19,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862758697] [2021-12-07 01:21:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:19,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:19,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:19,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:19,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 427 transitions, 11265 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:19,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:19,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:19,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:20,313 INFO L129 PetriNetUnfolder]: 800/6701 cut-off events. [2021-12-07 01:21:20,313 INFO L130 PetriNetUnfolder]: For 72272/72583 co-relation queries the response was YES. [2021-12-07 01:21:20,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21953 conditions, 6701 events. 800/6701 cut-off events. For 72272/72583 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 85032 event pairs, 248 based on Foata normal form. 73/6496 useless extension candidates. Maximal degree in co-relation 20822. Up to 661 conditions per place. [2021-12-07 01:21:20,383 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 262 selfloop transitions, 95 changer transitions 1/450 dead transitions. [2021-12-07 01:21:20,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 450 transitions, 12313 flow [2021-12-07 01:21:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-12-07 01:21:20,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2021-12-07 01:21:20,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-12-07 01:21:20,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-12-07 01:21:20,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:20,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-12-07 01:21:20,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2021-12-07 01:21:20,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:20,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:20,386 INFO L186 Difference]: Start difference. First operand has 320 places, 427 transitions, 11265 flow. Second operand 5 states and 546 transitions. [2021-12-07 01:21:20,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 450 transitions, 12313 flow [2021-12-07 01:21:20,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 450 transitions, 12172 flow, removed 21 selfloop flow, removed 3 redundant places. [2021-12-07 01:21:20,830 INFO L242 Difference]: Finished difference. Result has 322 places, 429 transitions, 11451 flow [2021-12-07 01:21:20,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11081, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11451, PETRI_PLACES=322, PETRI_TRANSITIONS=429} [2021-12-07 01:21:20,831 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 210 predicate places. [2021-12-07 01:21:20,831 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 429 transitions, 11451 flow [2021-12-07 01:21:20,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:20,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:20,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:20,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-07 01:21:20,832 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 708566197, now seen corresponding path program 8 times [2021-12-07 01:21:20,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:20,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181150271] [2021-12-07 01:21:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:20,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:20,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:20,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181150271] [2021-12-07 01:21:20,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181150271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:20,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:20,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:20,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655244285] [2021-12-07 01:21:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:20,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:20,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:20,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:20,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 429 transitions, 11451 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:20,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:20,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:20,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:22,189 INFO L129 PetriNetUnfolder]: 802/6684 cut-off events. [2021-12-07 01:21:22,189 INFO L130 PetriNetUnfolder]: For 71380/71685 co-relation queries the response was YES. [2021-12-07 01:21:22,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22011 conditions, 6684 events. 802/6684 cut-off events. For 71380/71685 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 84583 event pairs, 239 based on Foata normal form. 76/6477 useless extension candidates. Maximal degree in co-relation 20956. Up to 679 conditions per place. [2021-12-07 01:21:22,267 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 266 selfloop transitions, 88 changer transitions 2/448 dead transitions. [2021-12-07 01:21:22,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 448 transitions, 12321 flow [2021-12-07 01:21:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-07 01:21:22,269 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-07 01:21:22,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-07 01:21:22,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-07 01:21:22,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:22,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-07 01:21:22,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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) [2021-12-07 01:21:22,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:22,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:22,271 INFO L186 Difference]: Start difference. First operand has 322 places, 429 transitions, 11451 flow. Second operand 5 states and 551 transitions. [2021-12-07 01:21:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 448 transitions, 12321 flow [2021-12-07 01:21:22,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 448 transitions, 12136 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-07 01:21:22,867 INFO L242 Difference]: Finished difference. Result has 322 places, 427 transitions, 11353 flow [2021-12-07 01:21:22,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11224, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11353, PETRI_PLACES=322, PETRI_TRANSITIONS=427} [2021-12-07 01:21:22,868 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 210 predicate places. [2021-12-07 01:21:22,868 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 427 transitions, 11353 flow [2021-12-07 01:21:22,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:22,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:22,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:22,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-07 01:21:22,868 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash 496567351, now seen corresponding path program 10 times [2021-12-07 01:21:22,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:22,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38876162] [2021-12-07 01:21:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:22,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:22,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:22,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38876162] [2021-12-07 01:21:22,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38876162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:22,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:22,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:22,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099112627] [2021-12-07 01:21:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:22,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:22,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:22,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 427 transitions, 11353 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:22,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:22,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:22,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:24,239 INFO L129 PetriNetUnfolder]: 822/6837 cut-off events. [2021-12-07 01:21:24,239 INFO L130 PetriNetUnfolder]: For 71303/71600 co-relation queries the response was YES. [2021-12-07 01:21:24,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22508 conditions, 6837 events. 822/6837 cut-off events. For 71303/71600 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 86708 event pairs, 240 based on Foata normal form. 81/6626 useless extension candidates. Maximal degree in co-relation 21296. Up to 735 conditions per place. [2021-12-07 01:21:24,317 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 285 selfloop transitions, 86 changer transitions 3/466 dead transitions. [2021-12-07 01:21:24,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 466 transitions, 13108 flow [2021-12-07 01:21:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-07 01:21:24,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-07 01:21:24,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-07 01:21:24,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-07 01:21:24,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:24,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-07 01:21:24,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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) [2021-12-07 01:21:24,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:24,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:24,320 INFO L186 Difference]: Start difference. First operand has 322 places, 427 transitions, 11353 flow. Second operand 5 states and 551 transitions. [2021-12-07 01:21:24,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 466 transitions, 13108 flow [2021-12-07 01:21:24,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 466 transitions, 13034 flow, removed 15 selfloop flow, removed 1 redundant places. [2021-12-07 01:21:24,822 INFO L242 Difference]: Finished difference. Result has 329 places, 438 transitions, 12175 flow [2021-12-07 01:21:24,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11210, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12175, PETRI_PLACES=329, PETRI_TRANSITIONS=438} [2021-12-07 01:21:24,822 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2021-12-07 01:21:24,822 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 438 transitions, 12175 flow [2021-12-07 01:21:24,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:24,823 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:24,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:24,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-07 01:21:24,823 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1020203059, now seen corresponding path program 11 times [2021-12-07 01:21:24,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530659683] [2021-12-07 01:21:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:24,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:24,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:24,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530659683] [2021-12-07 01:21:24,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530659683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:24,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:24,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:24,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606113961] [2021-12-07 01:21:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:24,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:24,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:24,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:24,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 438 transitions, 12175 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:24,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:24,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:24,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:26,155 INFO L129 PetriNetUnfolder]: 813/6661 cut-off events. [2021-12-07 01:21:26,156 INFO L130 PetriNetUnfolder]: For 74792/75108 co-relation queries the response was YES. [2021-12-07 01:21:26,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22365 conditions, 6661 events. 813/6661 cut-off events. For 74792/75108 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 84166 event pairs, 241 based on Foata normal form. 77/6455 useless extension candidates. Maximal degree in co-relation 21154. Up to 694 conditions per place. [2021-12-07 01:21:26,225 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 266 selfloop transitions, 108 changer transitions 7/473 dead transitions. [2021-12-07 01:21:26,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 473 transitions, 13488 flow [2021-12-07 01:21:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:21:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:21:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2021-12-07 01:21:26,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2021-12-07 01:21:26,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2021-12-07 01:21:26,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2021-12-07 01:21:26,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:26,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2021-12-07 01:21:26,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 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) [2021-12-07 01:21:26,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:26,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2021-12-07 01:21:26,228 INFO L186 Difference]: Start difference. First operand has 329 places, 438 transitions, 12175 flow. Second operand 6 states and 658 transitions. [2021-12-07 01:21:26,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 473 transitions, 13488 flow [2021-12-07 01:21:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 473 transitions, 13486 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-12-07 01:21:26,711 INFO L242 Difference]: Finished difference. Result has 336 places, 443 transitions, 12620 flow [2021-12-07 01:21:26,712 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12133, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12620, PETRI_PLACES=336, PETRI_TRANSITIONS=443} [2021-12-07 01:21:26,712 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 224 predicate places. [2021-12-07 01:21:26,712 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 443 transitions, 12620 flow [2021-12-07 01:21:26,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:26,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:26,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:26,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-07 01:21:26,713 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1157326537, now seen corresponding path program 12 times [2021-12-07 01:21:26,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:26,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491722515] [2021-12-07 01:21:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:26,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:26,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:26,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491722515] [2021-12-07 01:21:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491722515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:26,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:26,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:26,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363742327] [2021-12-07 01:21:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:26,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:26,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:26,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:26,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 443 transitions, 12620 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:26,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:26,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:26,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:28,044 INFO L129 PetriNetUnfolder]: 797/6518 cut-off events. [2021-12-07 01:21:28,044 INFO L130 PetriNetUnfolder]: For 78512/78788 co-relation queries the response was YES. [2021-12-07 01:21:28,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22426 conditions, 6518 events. 797/6518 cut-off events. For 78512/78788 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 81733 event pairs, 247 based on Foata normal form. 77/6307 useless extension candidates. Maximal degree in co-relation 21029. Up to 662 conditions per place. [2021-12-07 01:21:28,122 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 286 selfloop transitions, 91 changer transitions 2/471 dead transitions. [2021-12-07 01:21:28,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 471 transitions, 13838 flow [2021-12-07 01:21:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2021-12-07 01:21:28,123 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8903225806451613 [2021-12-07 01:21:28,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2021-12-07 01:21:28,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2021-12-07 01:21:28,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:28,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2021-12-07 01:21:28,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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) [2021-12-07 01:21:28,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:28,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:28,125 INFO L186 Difference]: Start difference. First operand has 336 places, 443 transitions, 12620 flow. Second operand 5 states and 552 transitions. [2021-12-07 01:21:28,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 471 transitions, 13838 flow [2021-12-07 01:21:28,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 471 transitions, 13634 flow, removed 47 selfloop flow, removed 3 redundant places. [2021-12-07 01:21:28,644 INFO L242 Difference]: Finished difference. Result has 339 places, 445 transitions, 12817 flow [2021-12-07 01:21:28,645 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12370, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12817, PETRI_PLACES=339, PETRI_TRANSITIONS=445} [2021-12-07 01:21:28,645 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 227 predicate places. [2021-12-07 01:21:28,645 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 445 transitions, 12817 flow [2021-12-07 01:21:28,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:28,645 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:28,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:28,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-07 01:21:28,646 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -928493117, now seen corresponding path program 9 times [2021-12-07 01:21:28,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:28,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814084075] [2021-12-07 01:21:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:28,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:28,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:28,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814084075] [2021-12-07 01:21:28,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814084075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:28,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:28,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:28,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552446454] [2021-12-07 01:21:28,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:28,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:28,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:28,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:28,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 445 transitions, 12817 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:28,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:28,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:28,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:30,053 INFO L129 PetriNetUnfolder]: 824/6767 cut-off events. [2021-12-07 01:21:30,053 INFO L130 PetriNetUnfolder]: For 80929/81234 co-relation queries the response was YES. [2021-12-07 01:21:30,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23144 conditions, 6767 events. 824/6767 cut-off events. For 80929/81234 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 85803 event pairs, 273 based on Foata normal form. 77/6547 useless extension candidates. Maximal degree in co-relation 22289. Up to 690 conditions per place. [2021-12-07 01:21:30,133 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 294 selfloop transitions, 86 changer transitions 1/473 dead transitions. [2021-12-07 01:21:30,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 473 transitions, 14114 flow [2021-12-07 01:21:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-12-07 01:21:30,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2021-12-07 01:21:30,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-12-07 01:21:30,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-12-07 01:21:30,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:30,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-12-07 01:21:30,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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) [2021-12-07 01:21:30,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:30,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:30,137 INFO L186 Difference]: Start difference. First operand has 339 places, 445 transitions, 12817 flow. Second operand 5 states and 548 transitions. [2021-12-07 01:21:30,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 473 transitions, 14114 flow [2021-12-07 01:21:30,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 473 transitions, 13905 flow, removed 53 selfloop flow, removed 4 redundant places. [2021-12-07 01:21:30,660 INFO L242 Difference]: Finished difference. Result has 341 places, 452 transitions, 13208 flow [2021-12-07 01:21:30,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12544, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13208, PETRI_PLACES=341, PETRI_TRANSITIONS=452} [2021-12-07 01:21:30,660 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 229 predicate places. [2021-12-07 01:21:30,661 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 452 transitions, 13208 flow [2021-12-07 01:21:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:30,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:30,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:30,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-07 01:21:30,661 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:30,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1248849577, now seen corresponding path program 10 times [2021-12-07 01:21:30,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:30,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079868012] [2021-12-07 01:21:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:30,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:30,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079868012] [2021-12-07 01:21:30,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079868012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:30,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:30,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:21:30,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813363074] [2021-12-07 01:21:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:30,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:21:30,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:21:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:21:30,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-07 01:21:30,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 452 transitions, 13208 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:30,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:30,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-07 01:21:30,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:32,064 INFO L129 PetriNetUnfolder]: 835/7024 cut-off events. [2021-12-07 01:21:32,064 INFO L130 PetriNetUnfolder]: For 79219/79508 co-relation queries the response was YES. [2021-12-07 01:21:32,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23468 conditions, 7024 events. 835/7024 cut-off events. For 79219/79508 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 89816 event pairs, 248 based on Foata normal form. 88/6802 useless extension candidates. Maximal degree in co-relation 21922. Up to 741 conditions per place. [2021-12-07 01:21:32,141 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 299 selfloop transitions, 84 changer transitions 4/479 dead transitions. [2021-12-07 01:21:32,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 479 transitions, 14307 flow [2021-12-07 01:21:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:21:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-07 01:21:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2021-12-07 01:21:32,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8903225806451613 [2021-12-07 01:21:32,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2021-12-07 01:21:32,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2021-12-07 01:21:32,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:32,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2021-12-07 01:21:32,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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) [2021-12-07 01:21:32,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:32,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2021-12-07 01:21:32,145 INFO L186 Difference]: Start difference. First operand has 341 places, 452 transitions, 13208 flow. Second operand 5 states and 552 transitions. [2021-12-07 01:21:32,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 479 transitions, 14307 flow [2021-12-07 01:21:32,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 479 transitions, 14190 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-12-07 01:21:32,684 INFO L242 Difference]: Finished difference. Result has 345 places, 450 transitions, 13256 flow [2021-12-07 01:21:32,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12941, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13256, PETRI_PLACES=345, PETRI_TRANSITIONS=450} [2021-12-07 01:21:32,684 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 233 predicate places. [2021-12-07 01:21:32,684 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 450 transitions, 13256 flow [2021-12-07 01:21:32,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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) [2021-12-07 01:21:32,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:32,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:32,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-07 01:21:32,685 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1818307598, now seen corresponding path program 1 times [2021-12-07 01:21:32,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:32,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849565807] [2021-12-07 01:21:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:32,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:32,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849565807] [2021-12-07 01:21:32,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849565807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:32,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:32,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:21:32,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10211562] [2021-12-07 01:21:32,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:32,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:21:32,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:21:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:21:32,747 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:21:32,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 450 transitions, 13256 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:32,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:32,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:21:32,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:37,699 INFO L129 PetriNetUnfolder]: 6894/19122 cut-off events. [2021-12-07 01:21:37,699 INFO L130 PetriNetUnfolder]: For 68694/81059 co-relation queries the response was YES. [2021-12-07 01:21:37,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49906 conditions, 19122 events. 6894/19122 cut-off events. For 68694/81059 co-relation queries the response was YES. Maximal size of possible extension queue 2773. Compared 245739 event pairs, 3560 based on Foata normal form. 101/18038 useless extension candidates. Maximal degree in co-relation 47743. Up to 8406 conditions per place. [2021-12-07 01:21:37,906 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 90 selfloop transitions, 32 changer transitions 28/560 dead transitions. [2021-12-07 01:21:37,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 560 transitions, 13912 flow [2021-12-07 01:21:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:21:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-07 01:21:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2271 transitions. [2021-12-07 01:21:37,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2021-12-07 01:21:37,909 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2271 transitions. [2021-12-07 01:21:37,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2271 transitions. [2021-12-07 01:21:37,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:37,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2271 transitions. [2021-12-07 01:21:37,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 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) [2021-12-07 01:21:37,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:21:37,914 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:21:37,914 INFO L186 Difference]: Start difference. First operand has 345 places, 450 transitions, 13256 flow. Second operand 24 states and 2271 transitions. [2021-12-07 01:21:37,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 560 transitions, 13912 flow [2021-12-07 01:21:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 560 transitions, 13790 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-12-07 01:21:38,306 INFO L242 Difference]: Finished difference. Result has 383 places, 481 transitions, 13405 flow [2021-12-07 01:21:38,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13134, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13405, PETRI_PLACES=383, PETRI_TRANSITIONS=481} [2021-12-07 01:21:38,307 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 271 predicate places. [2021-12-07 01:21:38,307 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 481 transitions, 13405 flow [2021-12-07 01:21:38,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:38,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:38,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:38,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-07 01:21:38,307 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 483121870, now seen corresponding path program 2 times [2021-12-07 01:21:38,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:38,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085356813] [2021-12-07 01:21:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:38,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:38,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:38,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085356813] [2021-12-07 01:21:38,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085356813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:38,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:38,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:21:38,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834802055] [2021-12-07 01:21:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:21:38,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:21:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:21:38,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:21:38,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 481 transitions, 13405 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:38,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:38,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:21:38,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:44,361 INFO L129 PetriNetUnfolder]: 7650/20681 cut-off events. [2021-12-07 01:21:44,361 INFO L130 PetriNetUnfolder]: For 94345/106479 co-relation queries the response was YES. [2021-12-07 01:21:44,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72577 conditions, 20681 events. 7650/20681 cut-off events. For 94345/106479 co-relation queries the response was YES. Maximal size of possible extension queue 3081. Compared 266929 event pairs, 3906 based on Foata normal form. 37/19429 useless extension candidates. Maximal degree in co-relation 72112. Up to 10216 conditions per place. [2021-12-07 01:21:44,676 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 86 selfloop transitions, 43 changer transitions 17/556 dead transitions. [2021-12-07 01:21:44,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 556 transitions, 14179 flow [2021-12-07 01:21:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:21:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:21:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2021-12-07 01:21:44,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2021-12-07 01:21:44,679 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2021-12-07 01:21:44,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2021-12-07 01:21:44,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:44,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2021-12-07 01:21:44,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2021-12-07 01:21:44,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:21:44,683 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:21:44,683 INFO L186 Difference]: Start difference. First operand has 383 places, 481 transitions, 13405 flow. Second operand 18 states and 1703 transitions. [2021-12-07 01:21:44,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 556 transitions, 14179 flow [2021-12-07 01:21:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 556 transitions, 14145 flow, removed 17 selfloop flow, removed 2 redundant places. [2021-12-07 01:21:45,386 INFO L242 Difference]: Finished difference. Result has 406 places, 508 transitions, 13776 flow [2021-12-07 01:21:45,386 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13373, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13776, PETRI_PLACES=406, PETRI_TRANSITIONS=508} [2021-12-07 01:21:45,386 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 294 predicate places. [2021-12-07 01:21:45,386 INFO L470 AbstractCegarLoop]: Abstraction has has 406 places, 508 transitions, 13776 flow [2021-12-07 01:21:45,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:45,387 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:45,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:45,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-07 01:21:45,387 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2027066098, now seen corresponding path program 1 times [2021-12-07 01:21:45,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:45,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142017889] [2021-12-07 01:21:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:45,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:45,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142017889] [2021-12-07 01:21:45,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142017889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:45,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:45,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:21:45,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312403750] [2021-12-07 01:21:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:45,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:21:45,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:21:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:21:45,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:21:45,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 508 transitions, 13776 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:45,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:45,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:21:45,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:21:52,008 INFO L129 PetriNetUnfolder]: 7918/21884 cut-off events. [2021-12-07 01:21:52,008 INFO L130 PetriNetUnfolder]: For 134214/146493 co-relation queries the response was YES. [2021-12-07 01:21:52,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86098 conditions, 21884 events. 7918/21884 cut-off events. For 134214/146493 co-relation queries the response was YES. Maximal size of possible extension queue 3224. Compared 286726 event pairs, 4594 based on Foata normal form. 89/20666 useless extension candidates. Maximal degree in co-relation 85624. Up to 12608 conditions per place. [2021-12-07 01:21:52,361 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 143 selfloop transitions, 32 changer transitions 28/613 dead transitions. [2021-12-07 01:21:52,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 613 transitions, 14857 flow [2021-12-07 01:21:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:21:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-07 01:21:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2271 transitions. [2021-12-07 01:21:52,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2021-12-07 01:21:52,364 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2271 transitions. [2021-12-07 01:21:52,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2271 transitions. [2021-12-07 01:21:52,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:21:52,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2271 transitions. [2021-12-07 01:21:52,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 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) [2021-12-07 01:21:52,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:21:52,369 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:21:52,370 INFO L186 Difference]: Start difference. First operand has 406 places, 508 transitions, 13776 flow. Second operand 24 states and 2271 transitions. [2021-12-07 01:21:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 613 transitions, 14857 flow [2021-12-07 01:21:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 613 transitions, 14673 flow, removed 92 selfloop flow, removed 2 redundant places. [2021-12-07 01:21:54,238 INFO L242 Difference]: Finished difference. Result has 443 places, 534 transitions, 13998 flow [2021-12-07 01:21:54,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13646, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13998, PETRI_PLACES=443, PETRI_TRANSITIONS=534} [2021-12-07 01:21:54,239 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 331 predicate places. [2021-12-07 01:21:54,239 INFO L470 AbstractCegarLoop]: Abstraction has has 443 places, 534 transitions, 13998 flow [2021-12-07 01:21:54,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:54,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:21:54,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:54,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-07 01:21:54,239 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:21:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2067845678, now seen corresponding path program 2 times [2021-12-07 01:21:54,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:54,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218612143] [2021-12-07 01:21:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:54,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:54,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:54,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218612143] [2021-12-07 01:21:54,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218612143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:21:54,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:21:54,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:21:54,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425446173] [2021-12-07 01:21:54,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:21:54,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:21:54,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:21:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:21:54,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:21:54,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 534 transitions, 13998 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:21:54,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:21:54,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:21:54,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:22:01,928 INFO L129 PetriNetUnfolder]: 8357/22753 cut-off events. [2021-12-07 01:22:01,928 INFO L130 PetriNetUnfolder]: For 189374/201639 co-relation queries the response was YES. [2021-12-07 01:22:02,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99468 conditions, 22753 events. 8357/22753 cut-off events. For 189374/201639 co-relation queries the response was YES. Maximal size of possible extension queue 3375. Compared 297676 event pairs, 4827 based on Foata normal form. 59/21460 useless extension candidates. Maximal degree in co-relation 98977. Up to 13665 conditions per place. [2021-12-07 01:22:02,331 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 139 selfloop transitions, 43 changer transitions 17/609 dead transitions. [2021-12-07 01:22:02,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 609 transitions, 15090 flow [2021-12-07 01:22:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:22:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:22:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2021-12-07 01:22:02,333 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2021-12-07 01:22:02,333 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2021-12-07 01:22:02,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2021-12-07 01:22:02,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:22:02,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2021-12-07 01:22:02,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2021-12-07 01:22:02,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:22:02,337 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:22:02,337 INFO L186 Difference]: Start difference. First operand has 443 places, 534 transitions, 13998 flow. Second operand 18 states and 1703 transitions. [2021-12-07 01:22:02,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 609 transitions, 15090 flow [2021-12-07 01:22:04,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 609 transitions, 14876 flow, removed 101 selfloop flow, removed 5 redundant places. [2021-12-07 01:22:04,205 INFO L242 Difference]: Finished difference. Result has 463 places, 561 transitions, 14319 flow [2021-12-07 01:22:04,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13824, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14319, PETRI_PLACES=463, PETRI_TRANSITIONS=561} [2021-12-07 01:22:04,206 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 351 predicate places. [2021-12-07 01:22:04,206 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 561 transitions, 14319 flow [2021-12-07 01:22:04,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:04,207 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:22:04,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:22:04,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-07 01:22:04,207 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:22:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:22:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 108918470, now seen corresponding path program 3 times [2021-12-07 01:22:04,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:22:04,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683328456] [2021-12-07 01:22:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:22:04,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:22:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:22:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:22:04,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:22:04,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683328456] [2021-12-07 01:22:04,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683328456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:22:04,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:22:04,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:22:04,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539079510] [2021-12-07 01:22:04,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:22:04,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:22:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:22:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:22:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:22:04,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:22:04,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 561 transitions, 14319 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:04,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:22:04,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:22:04,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:22:12,226 INFO L129 PetriNetUnfolder]: 8961/24454 cut-off events. [2021-12-07 01:22:12,226 INFO L130 PetriNetUnfolder]: For 246519/258675 co-relation queries the response was YES. [2021-12-07 01:22:12,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111510 conditions, 24454 events. 8961/24454 cut-off events. For 246519/258675 co-relation queries the response was YES. Maximal size of possible extension queue 3637. Compared 323523 event pairs, 4616 based on Foata normal form. 22/23130 useless extension candidates. Maximal degree in co-relation 111012. Up to 13283 conditions per place. [2021-12-07 01:22:12,695 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 40 changer transitions 22/654 dead transitions. [2021-12-07 01:22:12,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 654 transitions, 15803 flow [2021-12-07 01:22:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:22:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:22:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1892 transitions. [2021-12-07 01:22:12,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629032258064516 [2021-12-07 01:22:12,698 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1892 transitions. [2021-12-07 01:22:12,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1892 transitions. [2021-12-07 01:22:12,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:22:12,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1892 transitions. [2021-12-07 01:22:12,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.6) internal successors, (1892), 20 states have internal predecessors, (1892), 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) [2021-12-07 01:22:12,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:22:12,702 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:22:12,702 INFO L186 Difference]: Start difference. First operand has 463 places, 561 transitions, 14319 flow. Second operand 20 states and 1892 transitions. [2021-12-07 01:22:12,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 654 transitions, 15803 flow [2021-12-07 01:22:15,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 654 transitions, 15481 flow, removed 161 selfloop flow, removed 2 redundant places. [2021-12-07 01:22:15,509 INFO L242 Difference]: Finished difference. Result has 493 places, 595 transitions, 14758 flow [2021-12-07 01:22:15,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=14095, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14758, PETRI_PLACES=493, PETRI_TRANSITIONS=595} [2021-12-07 01:22:15,509 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 381 predicate places. [2021-12-07 01:22:15,510 INFO L470 AbstractCegarLoop]: Abstraction has has 493 places, 595 transitions, 14758 flow [2021-12-07 01:22:15,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:15,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:22:15,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:22:15,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-07 01:22:15,510 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:22:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:22:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1445429416, now seen corresponding path program 4 times [2021-12-07 01:22:15,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:22:15,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076300172] [2021-12-07 01:22:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:22:15,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:22:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:22:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:22:15,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:22:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076300172] [2021-12-07 01:22:15,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076300172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:22:15,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:22:15,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:22:15,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140349844] [2021-12-07 01:22:15,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:22:15,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:22:15,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:22:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:22:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:22:15,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:22:15,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 595 transitions, 14758 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:15,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:22:15,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:22:15,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:22:23,999 INFO L129 PetriNetUnfolder]: 9197/25053 cut-off events. [2021-12-07 01:22:23,999 INFO L130 PetriNetUnfolder]: For 294016/306208 co-relation queries the response was YES. [2021-12-07 01:22:24,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119412 conditions, 25053 events. 9197/25053 cut-off events. For 294016/306208 co-relation queries the response was YES. Maximal size of possible extension queue 3731. Compared 333614 event pairs, 4274 based on Foata normal form. 40/23812 useless extension candidates. Maximal degree in co-relation 118900. Up to 12043 conditions per place. [2021-12-07 01:22:24,611 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 210 selfloop transitions, 80 changer transitions 26/726 dead transitions. [2021-12-07 01:22:24,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 726 transitions, 16477 flow [2021-12-07 01:22:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:22:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-07 01:22:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2268 transitions. [2021-12-07 01:22:24,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2021-12-07 01:22:24,614 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2268 transitions. [2021-12-07 01:22:24,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2268 transitions. [2021-12-07 01:22:24,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:22:24,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2268 transitions. [2021-12-07 01:22:24,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.5) internal successors, (2268), 24 states have internal predecessors, (2268), 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) [2021-12-07 01:22:24,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:22:24,620 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:22:24,620 INFO L186 Difference]: Start difference. First operand has 493 places, 595 transitions, 14758 flow. Second operand 24 states and 2268 transitions. [2021-12-07 01:22:24,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 726 transitions, 16477 flow [2021-12-07 01:22:28,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 726 transitions, 16061 flow, removed 208 selfloop flow, removed 2 redundant places. [2021-12-07 01:22:28,999 INFO L242 Difference]: Finished difference. Result has 532 places, 627 transitions, 15152 flow [2021-12-07 01:22:29,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=14448, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=15152, PETRI_PLACES=532, PETRI_TRANSITIONS=627} [2021-12-07 01:22:29,000 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 420 predicate places. [2021-12-07 01:22:29,000 INFO L470 AbstractCegarLoop]: Abstraction has has 532 places, 627 transitions, 15152 flow [2021-12-07 01:22:29,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:29,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:22:29,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:22:29,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-07 01:22:29,000 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:22:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:22:29,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1296541898, now seen corresponding path program 5 times [2021-12-07 01:22:29,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:22:29,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385951183] [2021-12-07 01:22:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:22:29,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:22:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:22:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:22:29,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:22:29,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385951183] [2021-12-07 01:22:29,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385951183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:22:29,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:22:29,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:22:29,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107731915] [2021-12-07 01:22:29,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:22:29,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:22:29,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:22:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:22:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:22:29,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:22:29,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 627 transitions, 15152 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:29,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:22:29,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:22:29,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:22:38,368 INFO L129 PetriNetUnfolder]: 9439/26106 cut-off events. [2021-12-07 01:22:38,369 INFO L130 PetriNetUnfolder]: For 296451/308824 co-relation queries the response was YES. [2021-12-07 01:22:38,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124870 conditions, 26106 events. 9439/26106 cut-off events. For 296451/308824 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 349995 event pairs, 4958 based on Foata normal form. 82/24795 useless extension candidates. Maximal degree in co-relation 124339. Up to 14345 conditions per place. [2021-12-07 01:22:39,035 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 190 selfloop transitions, 82 changer transitions 24/706 dead transitions. [2021-12-07 01:22:39,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 706 transitions, 16654 flow [2021-12-07 01:22:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:22:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-07 01:22:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2075 transitions. [2021-12-07 01:22:39,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7606304985337243 [2021-12-07 01:22:39,038 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2075 transitions. [2021-12-07 01:22:39,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2075 transitions. [2021-12-07 01:22:39,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:22:39,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2075 transitions. [2021-12-07 01:22:39,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.31818181818181) internal successors, (2075), 22 states have internal predecessors, (2075), 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) [2021-12-07 01:22:39,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:22:39,042 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:22:39,042 INFO L186 Difference]: Start difference. First operand has 532 places, 627 transitions, 15152 flow. Second operand 22 states and 2075 transitions. [2021-12-07 01:22:39,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 706 transitions, 16654 flow [2021-12-07 01:22:43,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 706 transitions, 16408 flow, removed 123 selfloop flow, removed 2 redundant places. [2021-12-07 01:22:43,105 INFO L242 Difference]: Finished difference. Result has 562 places, 655 transitions, 15719 flow [2021-12-07 01:22:43,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=15032, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=15719, PETRI_PLACES=562, PETRI_TRANSITIONS=655} [2021-12-07 01:22:43,106 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 450 predicate places. [2021-12-07 01:22:43,106 INFO L470 AbstractCegarLoop]: Abstraction has has 562 places, 655 transitions, 15719 flow [2021-12-07 01:22:43,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:43,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:22:43,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:22:43,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-07 01:22:43,107 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:22:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:22:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1382308630, now seen corresponding path program 6 times [2021-12-07 01:22:43,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:22:43,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357687511] [2021-12-07 01:22:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:22:43,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:22:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:22:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:22:43,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:22:43,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357687511] [2021-12-07 01:22:43,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357687511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:22:43,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:22:43,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:22:43,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241647585] [2021-12-07 01:22:43,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:22:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:22:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:22:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:22:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:22:43,165 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:22:43,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 655 transitions, 15719 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:43,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:22:43,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:22:43,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:22:53,436 INFO L129 PetriNetUnfolder]: 9716/26667 cut-off events. [2021-12-07 01:22:53,436 INFO L130 PetriNetUnfolder]: For 244862/257113 co-relation queries the response was YES. [2021-12-07 01:22:54,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126325 conditions, 26667 events. 9716/26667 cut-off events. For 244862/257113 co-relation queries the response was YES. Maximal size of possible extension queue 3960. Compared 357678 event pairs, 5192 based on Foata normal form. 39/25275 useless extension candidates. Maximal degree in co-relation 125782. Up to 14856 conditions per place. [2021-12-07 01:22:54,150 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 218 selfloop transitions, 82 changer transitions 16/726 dead transitions. [2021-12-07 01:22:54,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 726 transitions, 17191 flow [2021-12-07 01:22:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:22:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:22:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2021-12-07 01:22:54,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2021-12-07 01:22:54,152 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2021-12-07 01:22:54,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2021-12-07 01:22:54,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:22:54,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2021-12-07 01:22:54,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 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) [2021-12-07 01:22:54,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:22:54,157 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:22:54,157 INFO L186 Difference]: Start difference. First operand has 562 places, 655 transitions, 15719 flow. Second operand 17 states and 1613 transitions. [2021-12-07 01:22:54,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 726 transitions, 17191 flow [2021-12-07 01:22:57,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 726 transitions, 16976 flow, removed 106 selfloop flow, removed 3 redundant places. [2021-12-07 01:22:57,666 INFO L242 Difference]: Finished difference. Result has 584 places, 681 transitions, 16264 flow [2021-12-07 01:22:57,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=15520, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=16264, PETRI_PLACES=584, PETRI_TRANSITIONS=681} [2021-12-07 01:22:57,667 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 472 predicate places. [2021-12-07 01:22:57,667 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 681 transitions, 16264 flow [2021-12-07 01:22:57,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:57,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:22:57,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:22:57,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-07 01:22:57,668 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:22:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:22:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -207198330, now seen corresponding path program 7 times [2021-12-07 01:22:57,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:22:57,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536380499] [2021-12-07 01:22:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:22:57,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:22:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:22:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:22:57,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:22:57,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536380499] [2021-12-07 01:22:57,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536380499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:22:57,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:22:57,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:22:57,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018878233] [2021-12-07 01:22:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:22:57,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:22:57,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:22:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:22:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:22:57,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:22:57,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 681 transitions, 16264 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:22:57,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:22:57,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:22:57,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:23:08,347 INFO L129 PetriNetUnfolder]: 9925/27712 cut-off events. [2021-12-07 01:23:08,347 INFO L130 PetriNetUnfolder]: For 265686/277986 co-relation queries the response was YES. [2021-12-07 01:23:09,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133601 conditions, 27712 events. 9925/27712 cut-off events. For 265686/277986 co-relation queries the response was YES. Maximal size of possible extension queue 4129. Compared 376482 event pairs, 5193 based on Foata normal form. 43/26323 useless extension candidates. Maximal degree in co-relation 133049. Up to 15122 conditions per place. [2021-12-07 01:23:09,216 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 221 selfloop transitions, 106 changer transitions 19/756 dead transitions. [2021-12-07 01:23:09,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 756 transitions, 17884 flow [2021-12-07 01:23:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:23:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:23:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1888 transitions. [2021-12-07 01:23:09,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612903225806451 [2021-12-07 01:23:09,218 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1888 transitions. [2021-12-07 01:23:09,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1888 transitions. [2021-12-07 01:23:09,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:23:09,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1888 transitions. [2021-12-07 01:23:09,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.4) internal successors, (1888), 20 states have internal predecessors, (1888), 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) [2021-12-07 01:23:09,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:23:09,222 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:23:09,222 INFO L186 Difference]: Start difference. First operand has 584 places, 681 transitions, 16264 flow. Second operand 20 states and 1888 transitions. [2021-12-07 01:23:09,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 756 transitions, 17884 flow [2021-12-07 01:23:13,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 756 transitions, 17614 flow, removed 135 selfloop flow, removed 2 redundant places. [2021-12-07 01:23:13,154 INFO L242 Difference]: Finished difference. Result has 612 places, 707 transitions, 16836 flow [2021-12-07 01:23:13,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=16054, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16836, PETRI_PLACES=612, PETRI_TRANSITIONS=707} [2021-12-07 01:23:13,155 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 500 predicate places. [2021-12-07 01:23:13,155 INFO L470 AbstractCegarLoop]: Abstraction has has 612 places, 707 transitions, 16836 flow [2021-12-07 01:23:13,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:13,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:23:13,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:23:13,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-07 01:23:13,155 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:23:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:23:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1791077818, now seen corresponding path program 8 times [2021-12-07 01:23:13,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:23:13,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086319481] [2021-12-07 01:23:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:23:13,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:23:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:23:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:23:13,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:23:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086319481] [2021-12-07 01:23:13,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086319481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:23:13,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:23:13,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:23:13,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268875569] [2021-12-07 01:23:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:23:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:23:13,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:23:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:23:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:23:13,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:23:13,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 707 transitions, 16836 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:13,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:23:13,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:23:13,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:23:24,031 INFO L129 PetriNetUnfolder]: 9926/27819 cut-off events. [2021-12-07 01:23:24,031 INFO L130 PetriNetUnfolder]: For 264612/276857 co-relation queries the response was YES. [2021-12-07 01:23:24,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136047 conditions, 27819 events. 9926/27819 cut-off events. For 264612/276857 co-relation queries the response was YES. Maximal size of possible extension queue 4159. Compared 380195 event pairs, 5011 based on Foata normal form. 43/26468 useless extension candidates. Maximal degree in co-relation 135483. Up to 15182 conditions per place. [2021-12-07 01:23:24,934 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 221 selfloop transitions, 107 changer transitions 19/757 dead transitions. [2021-12-07 01:23:24,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 757 transitions, 18089 flow [2021-12-07 01:23:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:23:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 01:23:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1518 transitions. [2021-12-07 01:23:24,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651209677419355 [2021-12-07 01:23:24,937 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1518 transitions. [2021-12-07 01:23:24,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1518 transitions. [2021-12-07 01:23:24,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:23:24,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1518 transitions. [2021-12-07 01:23:24,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.875) internal successors, (1518), 16 states have internal predecessors, (1518), 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) [2021-12-07 01:23:24,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:23:24,940 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:23:24,940 INFO L186 Difference]: Start difference. First operand has 612 places, 707 transitions, 16836 flow. Second operand 16 states and 1518 transitions. [2021-12-07 01:23:24,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 757 transitions, 18089 flow [2021-12-07 01:23:28,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 757 transitions, 17916 flow, removed 66 selfloop flow, removed 3 redundant places. [2021-12-07 01:23:28,809 INFO L242 Difference]: Finished difference. Result has 627 places, 713 transitions, 17044 flow [2021-12-07 01:23:28,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=16700, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17044, PETRI_PLACES=627, PETRI_TRANSITIONS=713} [2021-12-07 01:23:28,809 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 515 predicate places. [2021-12-07 01:23:28,809 INFO L470 AbstractCegarLoop]: Abstraction has has 627 places, 713 transitions, 17044 flow [2021-12-07 01:23:28,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:28,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:23:28,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:23:28,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-07 01:23:28,810 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:23:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:23:28,810 INFO L85 PathProgramCache]: Analyzing trace with hash -911527218, now seen corresponding path program 9 times [2021-12-07 01:23:28,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:23:28,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147874933] [2021-12-07 01:23:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:23:28,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:23:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:23:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:23:28,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:23:28,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147874933] [2021-12-07 01:23:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147874933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:23:28,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:23:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:23:28,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713809066] [2021-12-07 01:23:28,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:23:28,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:23:28,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:23:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:23:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:23:28,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:23:28,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 713 transitions, 17044 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:28,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:23:28,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:23:28,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:23:40,085 INFO L129 PetriNetUnfolder]: 10113/28692 cut-off events. [2021-12-07 01:23:40,086 INFO L130 PetriNetUnfolder]: For 274074/286320 co-relation queries the response was YES. [2021-12-07 01:23:40,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141587 conditions, 28692 events. 10113/28692 cut-off events. For 274074/286320 co-relation queries the response was YES. Maximal size of possible extension queue 4301. Compared 396093 event pairs, 4979 based on Foata normal form. 33/27347 useless extension candidates. Maximal degree in co-relation 141020. Up to 14887 conditions per place. [2021-12-07 01:23:40,985 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 252 selfloop transitions, 100 changer transitions 23/785 dead transitions. [2021-12-07 01:23:40,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 785 transitions, 18727 flow [2021-12-07 01:23:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:23:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 01:23:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1985 transitions. [2021-12-07 01:23:40,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622887864823349 [2021-12-07 01:23:40,987 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1985 transitions. [2021-12-07 01:23:40,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1985 transitions. [2021-12-07 01:23:40,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:23:40,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1985 transitions. [2021-12-07 01:23:41,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.52380952380952) internal successors, (1985), 21 states have internal predecessors, (1985), 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) [2021-12-07 01:23:41,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:23:41,091 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:23:41,091 INFO L186 Difference]: Start difference. First operand has 627 places, 713 transitions, 17044 flow. Second operand 21 states and 1985 transitions. [2021-12-07 01:23:41,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 785 transitions, 18727 flow [2021-12-07 01:23:45,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 785 transitions, 18652 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-12-07 01:23:45,050 INFO L242 Difference]: Finished difference. Result has 656 places, 738 transitions, 17840 flow [2021-12-07 01:23:45,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=16975, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17840, PETRI_PLACES=656, PETRI_TRANSITIONS=738} [2021-12-07 01:23:45,051 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 544 predicate places. [2021-12-07 01:23:45,051 INFO L470 AbstractCegarLoop]: Abstraction has has 656 places, 738 transitions, 17840 flow [2021-12-07 01:23:45,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:45,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:23:45,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:23:45,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-07 01:23:45,051 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:23:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:23:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash 937562456, now seen corresponding path program 10 times [2021-12-07 01:23:45,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:23:45,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470991467] [2021-12-07 01:23:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:23:45,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:23:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:23:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:23:45,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:23:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470991467] [2021-12-07 01:23:45,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470991467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:23:45,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:23:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:23:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796671627] [2021-12-07 01:23:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:23:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:23:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:23:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:23:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:23:45,114 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:23:45,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 738 transitions, 17840 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:23:45,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:23:45,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:23:45,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:23:56,919 INFO L129 PetriNetUnfolder]: 10209/29116 cut-off events. [2021-12-07 01:23:56,919 INFO L130 PetriNetUnfolder]: For 304176/316426 co-relation queries the response was YES. [2021-12-07 01:23:57,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148145 conditions, 29116 events. 10209/29116 cut-off events. For 304176/316426 co-relation queries the response was YES. Maximal size of possible extension queue 4376. Compared 404066 event pairs, 5069 based on Foata normal form. 33/27764 useless extension candidates. Maximal degree in co-relation 147566. Up to 15514 conditions per place. [2021-12-07 01:23:57,904 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 238 selfloop transitions, 120 changer transitions 20/788 dead transitions. [2021-12-07 01:23:57,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 788 transitions, 19222 flow [2021-12-07 01:23:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:23:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:23:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2021-12-07 01:23:57,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2021-12-07 01:23:57,907 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2021-12-07 01:23:57,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2021-12-07 01:23:57,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:23:57,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2021-12-07 01:23:57,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2021-12-07 01:23:57,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:23:57,911 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:23:57,911 INFO L186 Difference]: Start difference. First operand has 656 places, 738 transitions, 17840 flow. Second operand 18 states and 1703 transitions. [2021-12-07 01:23:57,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 788 transitions, 19222 flow [2021-12-07 01:24:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 788 transitions, 18920 flow, removed 151 selfloop flow, removed 2 redundant places. [2021-12-07 01:24:02,347 INFO L242 Difference]: Finished difference. Result has 676 places, 751 transitions, 18156 flow [2021-12-07 01:24:02,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=17606, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18156, PETRI_PLACES=676, PETRI_TRANSITIONS=751} [2021-12-07 01:24:02,348 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 564 predicate places. [2021-12-07 01:24:02,348 INFO L470 AbstractCegarLoop]: Abstraction has has 676 places, 751 transitions, 18156 flow [2021-12-07 01:24:02,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:02,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:24:02,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:24:02,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-07 01:24:02,349 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:24:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:24:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1918875248, now seen corresponding path program 11 times [2021-12-07 01:24:02,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:24:02,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125010735] [2021-12-07 01:24:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:24:02,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:24:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:24:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:24:02,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:24:02,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125010735] [2021-12-07 01:24:02,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125010735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:24:02,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:24:02,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:24:02,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771769590] [2021-12-07 01:24:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:24:02,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:24:02,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:24:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:24:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:24:02,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:24:02,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 751 transitions, 18156 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:02,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:24:02,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:24:02,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:24:14,801 INFO L129 PetriNetUnfolder]: 10335/29491 cut-off events. [2021-12-07 01:24:14,802 INFO L130 PetriNetUnfolder]: For 305634/317888 co-relation queries the response was YES. [2021-12-07 01:24:15,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151203 conditions, 29491 events. 10335/29491 cut-off events. For 305634/317888 co-relation queries the response was YES. Maximal size of possible extension queue 4416. Compared 409664 event pairs, 5117 based on Foata normal form. 34/28121 useless extension candidates. Maximal degree in co-relation 150618. Up to 15680 conditions per place. [2021-12-07 01:24:15,791 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 265 selfloop transitions, 114 changer transitions 15/804 dead transitions. [2021-12-07 01:24:15,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 804 transitions, 19660 flow [2021-12-07 01:24:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:24:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:24:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2021-12-07 01:24:15,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2021-12-07 01:24:15,793 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2021-12-07 01:24:15,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2021-12-07 01:24:15,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:24:15,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2021-12-07 01:24:15,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 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) [2021-12-07 01:24:15,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:24:15,797 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:24:15,797 INFO L186 Difference]: Start difference. First operand has 676 places, 751 transitions, 18156 flow. Second operand 17 states and 1613 transitions. [2021-12-07 01:24:15,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 804 transitions, 19660 flow [2021-12-07 01:24:20,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 804 transitions, 19498 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-12-07 01:24:20,784 INFO L242 Difference]: Finished difference. Result has 691 places, 769 transitions, 18702 flow [2021-12-07 01:24:20,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=18006, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18702, PETRI_PLACES=691, PETRI_TRANSITIONS=769} [2021-12-07 01:24:20,784 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 579 predicate places. [2021-12-07 01:24:20,785 INFO L470 AbstractCegarLoop]: Abstraction has has 691 places, 769 transitions, 18702 flow [2021-12-07 01:24:20,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:20,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:24:20,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:24:20,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-07 01:24:20,785 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:24:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:24:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1185605970, now seen corresponding path program 12 times [2021-12-07 01:24:20,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:24:20,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571906358] [2021-12-07 01:24:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:24:20,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:24:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:24:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:24:20,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:24:20,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571906358] [2021-12-07 01:24:20,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571906358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:24:20,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:24:20,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:24:20,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065768207] [2021-12-07 01:24:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:24:20,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:24:20,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:24:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:24:20,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:24:20,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:24:20,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 769 transitions, 18702 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:20,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:24:20,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:24:20,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:24:33,313 INFO L129 PetriNetUnfolder]: 10335/29732 cut-off events. [2021-12-07 01:24:33,313 INFO L130 PetriNetUnfolder]: For 315455/327770 co-relation queries the response was YES. [2021-12-07 01:24:34,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152878 conditions, 29732 events. 10335/29732 cut-off events. For 315455/327770 co-relation queries the response was YES. Maximal size of possible extension queue 4430. Compared 414318 event pairs, 5282 based on Foata normal form. 43/28344 useless extension candidates. Maximal degree in co-relation 152290. Up to 15640 conditions per place. [2021-12-07 01:24:34,391 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 262 selfloop transitions, 116 changer transitions 24/812 dead transitions. [2021-12-07 01:24:34,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 812 transitions, 19932 flow [2021-12-07 01:24:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:24:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:24:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1707 transitions. [2021-12-07 01:24:34,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647849462365591 [2021-12-07 01:24:34,392 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1707 transitions. [2021-12-07 01:24:34,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1707 transitions. [2021-12-07 01:24:34,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:24:34,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1707 transitions. [2021-12-07 01:24:34,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.83333333333333) internal successors, (1707), 18 states have internal predecessors, (1707), 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) [2021-12-07 01:24:34,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:24:34,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:24:34,396 INFO L186 Difference]: Start difference. First operand has 691 places, 769 transitions, 18702 flow. Second operand 18 states and 1707 transitions. [2021-12-07 01:24:34,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 812 transitions, 19932 flow [2021-12-07 01:24:39,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 812 transitions, 19722 flow, removed 78 selfloop flow, removed 4 redundant places. [2021-12-07 01:24:39,610 INFO L242 Difference]: Finished difference. Result has 707 places, 776 transitions, 18923 flow [2021-12-07 01:24:39,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=18504, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18923, PETRI_PLACES=707, PETRI_TRANSITIONS=776} [2021-12-07 01:24:39,611 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 595 predicate places. [2021-12-07 01:24:39,611 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 776 transitions, 18923 flow [2021-12-07 01:24:39,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:39,611 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:24:39,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:24:39,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-07 01:24:39,612 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:24:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:24:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1125176488, now seen corresponding path program 13 times [2021-12-07 01:24:39,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:24:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379106549] [2021-12-07 01:24:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:24:39,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:24:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:24:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:24:39,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:24:39,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379106549] [2021-12-07 01:24:39,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379106549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:24:39,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:24:39,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:24:39,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583828989] [2021-12-07 01:24:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:24:39,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:24:39,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:24:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:24:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:24:39,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:24:39,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 776 transitions, 18923 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:39,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:24:39,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:24:39,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:24:52,601 INFO L129 PetriNetUnfolder]: 10822/31103 cut-off events. [2021-12-07 01:24:52,602 INFO L130 PetriNetUnfolder]: For 348469/360719 co-relation queries the response was YES. [2021-12-07 01:24:53,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162092 conditions, 31103 events. 10822/31103 cut-off events. For 348469/360719 co-relation queries the response was YES. Maximal size of possible extension queue 4628. Compared 436258 event pairs, 4747 based on Foata normal form. 42/29794 useless extension candidates. Maximal degree in co-relation 161502. Up to 14942 conditions per place. [2021-12-07 01:24:53,663 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 288 selfloop transitions, 145 changer transitions 23/866 dead transitions. [2021-12-07 01:24:53,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 866 transitions, 20908 flow [2021-12-07 01:24:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:24:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-07 01:24:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2073 transitions. [2021-12-07 01:24:53,665 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598973607038123 [2021-12-07 01:24:53,665 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2073 transitions. [2021-12-07 01:24:53,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2073 transitions. [2021-12-07 01:24:53,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:24:53,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2073 transitions. [2021-12-07 01:24:53,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.22727272727273) internal successors, (2073), 22 states have internal predecessors, (2073), 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) [2021-12-07 01:24:53,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:24:53,668 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:24:53,669 INFO L186 Difference]: Start difference. First operand has 707 places, 776 transitions, 18923 flow. Second operand 22 states and 2073 transitions. [2021-12-07 01:24:53,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 866 transitions, 20908 flow [2021-12-07 01:24:59,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 866 transitions, 20771 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-12-07 01:24:59,175 INFO L242 Difference]: Finished difference. Result has 732 places, 810 transitions, 19875 flow [2021-12-07 01:24:59,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=18788, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=19875, PETRI_PLACES=732, PETRI_TRANSITIONS=810} [2021-12-07 01:24:59,176 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 620 predicate places. [2021-12-07 01:24:59,176 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 810 transitions, 19875 flow [2021-12-07 01:24:59,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:59,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:24:59,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:24:59,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-07 01:24:59,176 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:24:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:24:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -713025982, now seen corresponding path program 14 times [2021-12-07 01:24:59,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:24:59,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012636999] [2021-12-07 01:24:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:24:59,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:24:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:24:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:24:59,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:24:59,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012636999] [2021-12-07 01:24:59,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012636999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:24:59,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:24:59,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:24:59,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672208978] [2021-12-07 01:24:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:24:59,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:24:59,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:24:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:24:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:24:59,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:24:59,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 810 transitions, 19875 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:24:59,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:24:59,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:24:59,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:25:12,966 INFO L129 PetriNetUnfolder]: 11003/31888 cut-off events. [2021-12-07 01:25:12,966 INFO L130 PetriNetUnfolder]: For 381946/394222 co-relation queries the response was YES. [2021-12-07 01:25:13,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171591 conditions, 31888 events. 11003/31888 cut-off events. For 381946/394222 co-relation queries the response was YES. Maximal size of possible extension queue 4792. Compared 450995 event pairs, 4800 based on Foata normal form. 41/30550 useless extension candidates. Maximal degree in co-relation 170994. Up to 15066 conditions per place. [2021-12-07 01:25:14,061 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 341 selfloop transitions, 107 changer transitions 21/879 dead transitions. [2021-12-07 01:25:14,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 879 transitions, 21747 flow [2021-12-07 01:25:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:25:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 01:25:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2021-12-07 01:25:14,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2021-12-07 01:25:14,063 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2021-12-07 01:25:14,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2021-12-07 01:25:14,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:25:14,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2021-12-07 01:25:14,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 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) [2021-12-07 01:25:14,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:25:14,066 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:25:14,066 INFO L186 Difference]: Start difference. First operand has 732 places, 810 transitions, 19875 flow. Second operand 21 states and 1982 transitions. [2021-12-07 01:25:14,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 879 transitions, 21747 flow [2021-12-07 01:25:20,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 879 transitions, 21541 flow, removed 103 selfloop flow, removed 2 redundant places. [2021-12-07 01:25:20,135 INFO L242 Difference]: Finished difference. Result has 762 places, 835 transitions, 20570 flow [2021-12-07 01:25:20,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=19683, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=20570, PETRI_PLACES=762, PETRI_TRANSITIONS=835} [2021-12-07 01:25:20,136 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 650 predicate places. [2021-12-07 01:25:20,136 INFO L470 AbstractCegarLoop]: Abstraction has has 762 places, 835 transitions, 20570 flow [2021-12-07 01:25:20,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:25:20,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:25:20,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:25:20,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-07 01:25:20,136 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:25:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:25:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash 765280296, now seen corresponding path program 15 times [2021-12-07 01:25:20,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:25:20,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144951487] [2021-12-07 01:25:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:25:20,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:25:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:25:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:25:20,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:25:20,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144951487] [2021-12-07 01:25:20,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144951487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:25:20,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:25:20,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:25:20,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361623382] [2021-12-07 01:25:20,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:25:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:25:20,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:25:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:25:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:25:20,185 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:25:20,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 835 transitions, 20570 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:25:20,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:25:20,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:25:20,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:25:34,580 INFO L129 PetriNetUnfolder]: 11129/32539 cut-off events. [2021-12-07 01:25:34,581 INFO L130 PetriNetUnfolder]: For 405918/418193 co-relation queries the response was YES. [2021-12-07 01:25:35,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177606 conditions, 32539 events. 11129/32539 cut-off events. For 405918/418193 co-relation queries the response was YES. Maximal size of possible extension queue 4890. Compared 462863 event pairs, 4801 based on Foata normal form. 50/31242 useless extension candidates. Maximal degree in co-relation 176996. Up to 15402 conditions per place. [2021-12-07 01:25:35,815 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 311 selfloop transitions, 162 changer transitions 18/901 dead transitions. [2021-12-07 01:25:35,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 901 transitions, 22343 flow [2021-12-07 01:25:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:25:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:25:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2021-12-07 01:25:35,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2021-12-07 01:25:35,817 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2021-12-07 01:25:35,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2021-12-07 01:25:35,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:25:35,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2021-12-07 01:25:35,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2021-12-07 01:25:35,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:25:35,820 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:25:35,820 INFO L186 Difference]: Start difference. First operand has 762 places, 835 transitions, 20570 flow. Second operand 18 states and 1703 transitions. [2021-12-07 01:25:35,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 901 transitions, 22343 flow [2021-12-07 01:25:42,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 775 places, 901 transitions, 22129 flow, removed 107 selfloop flow, removed 2 redundant places. [2021-12-07 01:25:42,657 INFO L242 Difference]: Finished difference. Result has 783 places, 856 transitions, 21231 flow [2021-12-07 01:25:42,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=20358, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21231, PETRI_PLACES=783, PETRI_TRANSITIONS=856} [2021-12-07 01:25:42,658 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 671 predicate places. [2021-12-07 01:25:42,658 INFO L470 AbstractCegarLoop]: Abstraction has has 783 places, 856 transitions, 21231 flow [2021-12-07 01:25:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:25:42,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:25:42,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:25:42,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-07 01:25:42,659 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:25:42,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:25:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1295809692, now seen corresponding path program 16 times [2021-12-07 01:25:42,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:25:42,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221882007] [2021-12-07 01:25:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:25:42,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:25:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:25:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:25:42,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:25:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221882007] [2021-12-07 01:25:42,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221882007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:25:42,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:25:42,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:25:42,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671432053] [2021-12-07 01:25:42,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:25:42,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:25:42,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:25:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:25:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:25:42,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:25:42,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 856 transitions, 21231 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:25:42,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:25:42,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:25:42,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:25:57,711 INFO L129 PetriNetUnfolder]: 11413/33192 cut-off events. [2021-12-07 01:25:57,711 INFO L130 PetriNetUnfolder]: For 430694/442969 co-relation queries the response was YES. [2021-12-07 01:25:58,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186545 conditions, 33192 events. 11413/33192 cut-off events. For 430694/442969 co-relation queries the response was YES. Maximal size of possible extension queue 4989. Compared 473668 event pairs, 4873 based on Foata normal form. 40/31842 useless extension candidates. Maximal degree in co-relation 185928. Up to 15608 conditions per place. [2021-12-07 01:25:58,962 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 353 selfloop transitions, 135 changer transitions 16/914 dead transitions. [2021-12-07 01:25:58,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 914 transitions, 23016 flow [2021-12-07 01:25:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:25:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:25:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1612 transitions. [2021-12-07 01:25:58,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2021-12-07 01:25:58,964 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1612 transitions. [2021-12-07 01:25:58,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1612 transitions. [2021-12-07 01:25:58,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:25:58,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1612 transitions. [2021-12-07 01:25:58,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.82352941176471) internal successors, (1612), 17 states have internal predecessors, (1612), 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) [2021-12-07 01:25:58,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:25:58,967 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:25:58,967 INFO L186 Difference]: Start difference. First operand has 783 places, 856 transitions, 21231 flow. Second operand 17 states and 1612 transitions. [2021-12-07 01:25:58,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 914 transitions, 23016 flow [2021-12-07 01:26:06,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 914 transitions, 22786 flow, removed 115 selfloop flow, removed 2 redundant places. [2021-12-07 01:26:06,393 INFO L242 Difference]: Finished difference. Result has 801 places, 878 transitions, 21867 flow [2021-12-07 01:26:06,394 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=21045, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21867, PETRI_PLACES=801, PETRI_TRANSITIONS=878} [2021-12-07 01:26:06,394 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 689 predicate places. [2021-12-07 01:26:06,394 INFO L470 AbstractCegarLoop]: Abstraction has has 801 places, 878 transitions, 21867 flow [2021-12-07 01:26:06,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:06,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:26:06,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:26:06,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-07 01:26:06,395 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:26:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:26:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1416565148, now seen corresponding path program 17 times [2021-12-07 01:26:06,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:26:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122916025] [2021-12-07 01:26:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:26:06,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:26:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:26:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:26:06,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:26:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122916025] [2021-12-07 01:26:06,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122916025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:26:06,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:26:06,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:26:06,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659224838] [2021-12-07 01:26:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:26:06,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:26:06,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:26:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:26:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:26:06,451 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:26:06,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 878 transitions, 21867 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:06,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:26:06,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:26:06,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:26:22,028 INFO L129 PetriNetUnfolder]: 11613/33945 cut-off events. [2021-12-07 01:26:22,028 INFO L130 PetriNetUnfolder]: For 449045/461320 co-relation queries the response was YES. [2021-12-07 01:26:23,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193527 conditions, 33945 events. 11613/33945 cut-off events. For 449045/461320 co-relation queries the response was YES. Maximal size of possible extension queue 5109. Compared 487022 event pairs, 4915 based on Foata normal form. 40/32583 useless extension candidates. Maximal degree in co-relation 192905. Up to 15845 conditions per place. [2021-12-07 01:26:23,395 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 379 selfloop transitions, 129 changer transitions 17/935 dead transitions. [2021-12-07 01:26:23,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 935 transitions, 23654 flow [2021-12-07 01:26:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:26:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:26:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1616 transitions. [2021-12-07 01:26:23,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666034155597723 [2021-12-07 01:26:23,397 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1616 transitions. [2021-12-07 01:26:23,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1616 transitions. [2021-12-07 01:26:23,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:26:23,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1616 transitions. [2021-12-07 01:26:23,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 95.05882352941177) internal successors, (1616), 17 states have internal predecessors, (1616), 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) [2021-12-07 01:26:23,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:26:23,400 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:26:23,400 INFO L186 Difference]: Start difference. First operand has 801 places, 878 transitions, 21867 flow. Second operand 17 states and 1616 transitions. [2021-12-07 01:26:23,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 935 transitions, 23654 flow [2021-12-07 01:26:30,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 935 transitions, 23502 flow, removed 76 selfloop flow, removed 2 redundant places. [2021-12-07 01:26:30,958 INFO L242 Difference]: Finished difference. Result has 819 places, 898 transitions, 22501 flow [2021-12-07 01:26:30,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=21729, PETRI_DIFFERENCE_MINUEND_PLACES=797, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22501, PETRI_PLACES=819, PETRI_TRANSITIONS=898} [2021-12-07 01:26:30,959 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 707 predicate places. [2021-12-07 01:26:30,959 INFO L470 AbstractCegarLoop]: Abstraction has has 819 places, 898 transitions, 22501 flow [2021-12-07 01:26:30,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:30,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:26:30,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:26:30,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-07 01:26:30,960 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:26:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:26:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash 868782668, now seen corresponding path program 18 times [2021-12-07 01:26:30,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:26:30,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242861791] [2021-12-07 01:26:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:26:30,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:26:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:26:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:26:31,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:26:31,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242861791] [2021-12-07 01:26:31,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242861791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:26:31,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:26:31,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:26:31,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228521243] [2021-12-07 01:26:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:26:31,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:26:31,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:26:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:26:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:26:31,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:26:31,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 898 transitions, 22501 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:31,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:26:31,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:26:31,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:26:47,207 INFO L129 PetriNetUnfolder]: 11647/34305 cut-off events. [2021-12-07 01:26:47,207 INFO L130 PetriNetUnfolder]: For 471293/483566 co-relation queries the response was YES. [2021-12-07 01:26:48,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197295 conditions, 34305 events. 11647/34305 cut-off events. For 471293/483566 co-relation queries the response was YES. Maximal size of possible extension queue 5173. Compared 495019 event pairs, 4933 based on Foata normal form. 41/32938 useless extension candidates. Maximal degree in co-relation 196668. Up to 15887 conditions per place. [2021-12-07 01:26:48,665 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 376 selfloop transitions, 134 changer transitions 21/941 dead transitions. [2021-12-07 01:26:48,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 941 transitions, 24010 flow [2021-12-07 01:26:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:26:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:26:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1706 transitions. [2021-12-07 01:26:48,667 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764336917562724 [2021-12-07 01:26:48,667 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1706 transitions. [2021-12-07 01:26:48,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1706 transitions. [2021-12-07 01:26:48,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:26:48,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1706 transitions. [2021-12-07 01:26:48,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.77777777777777) internal successors, (1706), 18 states have internal predecessors, (1706), 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) [2021-12-07 01:26:48,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:26:48,672 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:26:48,672 INFO L186 Difference]: Start difference. First operand has 819 places, 898 transitions, 22501 flow. Second operand 18 states and 1706 transitions. [2021-12-07 01:26:48,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 941 transitions, 24010 flow [2021-12-07 01:26:56,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 941 transitions, 23791 flow, removed 74 selfloop flow, removed 3 redundant places. [2021-12-07 01:26:56,710 INFO L242 Difference]: Finished difference. Result has 835 places, 907 transitions, 22822 flow [2021-12-07 01:26:56,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=22304, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=22822, PETRI_PLACES=835, PETRI_TRANSITIONS=907} [2021-12-07 01:26:56,711 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 723 predicate places. [2021-12-07 01:26:56,711 INFO L470 AbstractCegarLoop]: Abstraction has has 835 places, 907 transitions, 22822 flow [2021-12-07 01:26:56,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:56,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:26:56,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:26:56,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-07 01:26:56,712 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:26:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:26:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1181610202, now seen corresponding path program 19 times [2021-12-07 01:26:56,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:26:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386866485] [2021-12-07 01:26:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:26:56,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:26:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:26:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:26:56,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:26:56,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386866485] [2021-12-07 01:26:56,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386866485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:26:56,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:26:56,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:26:56,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409385655] [2021-12-07 01:26:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:26:56,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:26:56,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:26:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:26:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:26:56,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:26:56,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 907 transitions, 22822 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:26:56,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:26:56,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:26:56,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:13,472 INFO L129 PetriNetUnfolder]: 11676/34738 cut-off events. [2021-12-07 01:27:13,472 INFO L130 PetriNetUnfolder]: For 489470/501743 co-relation queries the response was YES. [2021-12-07 01:27:14,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199194 conditions, 34738 events. 11676/34738 cut-off events. For 489470/501743 co-relation queries the response was YES. Maximal size of possible extension queue 5217. Compared 503248 event pairs, 4891 based on Foata normal form. 54/33429 useless extension candidates. Maximal degree in co-relation 198565. Up to 16018 conditions per place. [2021-12-07 01:27:14,995 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 339 selfloop transitions, 183 changer transitions 22/954 dead transitions. [2021-12-07 01:27:14,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 954 transitions, 24302 flow [2021-12-07 01:27:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:27:14,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 01:27:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1521 transitions. [2021-12-07 01:27:14,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.766633064516129 [2021-12-07 01:27:14,997 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1521 transitions. [2021-12-07 01:27:14,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1521 transitions. [2021-12-07 01:27:14,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:14,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1521 transitions. [2021-12-07 01:27:14,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 95.0625) internal successors, (1521), 16 states have internal predecessors, (1521), 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) [2021-12-07 01:27:15,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:27:15,000 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:27:15,000 INFO L186 Difference]: Start difference. First operand has 835 places, 907 transitions, 22822 flow. Second operand 16 states and 1521 transitions. [2021-12-07 01:27:15,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 848 places, 954 transitions, 24302 flow [2021-12-07 01:27:23,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 954 transitions, 24120 flow, removed 55 selfloop flow, removed 19 redundant places. [2021-12-07 01:27:23,076 INFO L242 Difference]: Finished difference. Result has 834 places, 913 transitions, 23169 flow [2021-12-07 01:27:23,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=22644, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=23169, PETRI_PLACES=834, PETRI_TRANSITIONS=913} [2021-12-07 01:27:23,077 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 722 predicate places. [2021-12-07 01:27:23,077 INFO L470 AbstractCegarLoop]: Abstraction has has 834 places, 913 transitions, 23169 flow [2021-12-07 01:27:23,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:27:23,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:23,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:23,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-07 01:27:23,078 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:27:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1617238698, now seen corresponding path program 20 times [2021-12-07 01:27:23,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:23,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665845131] [2021-12-07 01:27:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:23,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:23,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665845131] [2021-12-07 01:27:23,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665845131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:23,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:27:23,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:27:23,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216363428] [2021-12-07 01:27:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:23,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:27:23,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:27:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:27:23,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:27:23,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 913 transitions, 23169 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:27:23,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:23,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:27:23,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:39,027 INFO L129 PetriNetUnfolder]: 11676/34574 cut-off events. [2021-12-07 01:27:39,027 INFO L130 PetriNetUnfolder]: For 500838/513111 co-relation queries the response was YES. [2021-12-07 01:27:40,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201965 conditions, 34574 events. 11676/34574 cut-off events. For 500838/513111 co-relation queries the response was YES. Maximal size of possible extension queue 5191. Compared 500084 event pairs, 4921 based on Foata normal form. 41/33231 useless extension candidates. Maximal degree in co-relation 201379. Up to 15994 conditions per place. [2021-12-07 01:27:40,369 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 111 selfloop transitions, 2 changer transitions 469/953 dead transitions. [2021-12-07 01:27:40,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 953 transitions, 24593 flow [2021-12-07 01:27:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:27:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:27:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1706 transitions. [2021-12-07 01:27:40,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764336917562724 [2021-12-07 01:27:40,371 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1706 transitions. [2021-12-07 01:27:40,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1706 transitions. [2021-12-07 01:27:40,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:40,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1706 transitions. [2021-12-07 01:27:40,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.77777777777777) internal successors, (1706), 18 states have internal predecessors, (1706), 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) [2021-12-07 01:27:40,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:27:40,374 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:27:40,374 INFO L186 Difference]: Start difference. First operand has 834 places, 913 transitions, 23169 flow. Second operand 18 states and 1706 transitions. [2021-12-07 01:27:40,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 953 transitions, 24593 flow [2021-12-07 01:27:48,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 844 places, 953 transitions, 24289 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-12-07 01:27:48,279 INFO L242 Difference]: Finished difference. Result has 849 places, 476 transitions, 12741 flow [2021-12-07 01:27:48,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=22877, PETRI_DIFFERENCE_MINUEND_PLACES=827, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12741, PETRI_PLACES=849, PETRI_TRANSITIONS=476} [2021-12-07 01:27:48,280 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 737 predicate places. [2021-12-07 01:27:48,280 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 476 transitions, 12741 flow [2021-12-07 01:27:48,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:27:48,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:48,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:48,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-07 01:27:48,281 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:27:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1104381488, now seen corresponding path program 3 times [2021-12-07 01:27:48,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786137552] [2021-12-07 01:27:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:48,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:48,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786137552] [2021-12-07 01:27:48,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786137552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:48,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:27:48,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:27:48,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290093653] [2021-12-07 01:27:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:48,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:27:48,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:27:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:27:48,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:27:48,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 476 transitions, 12741 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:27:48,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:48,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:27:48,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:56,967 INFO L129 PetriNetUnfolder]: 8171/22079 cut-off events. [2021-12-07 01:27:56,967 INFO L130 PetriNetUnfolder]: For 284748/296045 co-relation queries the response was YES. [2021-12-07 01:27:57,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109448 conditions, 22079 events. 8171/22079 cut-off events. For 284748/296045 co-relation queries the response was YES. Maximal size of possible extension queue 3331. Compared 288428 event pairs, 3653 based on Foata normal form. 50/20806 useless extension candidates. Maximal degree in co-relation 109169. Up to 9369 conditions per place. [2021-12-07 01:27:57,699 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 119 selfloop transitions, 49 changer transitions 23/562 dead transitions. [2021-12-07 01:27:57,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 562 transitions, 13973 flow [2021-12-07 01:27:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:27:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 01:27:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1985 transitions. [2021-12-07 01:27:57,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622887864823349 [2021-12-07 01:27:57,701 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1985 transitions. [2021-12-07 01:27:57,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1985 transitions. [2021-12-07 01:27:57,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:57,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1985 transitions. [2021-12-07 01:27:57,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.52380952380952) internal successors, (1985), 21 states have internal predecessors, (1985), 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) [2021-12-07 01:27:57,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:27:57,704 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:27:57,704 INFO L186 Difference]: Start difference. First operand has 849 places, 476 transitions, 12741 flow. Second operand 21 states and 1985 transitions. [2021-12-07 01:27:57,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 562 transitions, 13973 flow [2021-12-07 01:28:00,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 562 transitions, 13089 flow, removed 171 selfloop flow, removed 107 redundant places. [2021-12-07 01:28:00,880 INFO L242 Difference]: Finished difference. Result has 507 places, 510 transitions, 12595 flow [2021-12-07 01:28:00,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12013, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12595, PETRI_PLACES=507, PETRI_TRANSITIONS=510} [2021-12-07 01:28:00,881 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 395 predicate places. [2021-12-07 01:28:00,881 INFO L470 AbstractCegarLoop]: Abstraction has has 507 places, 510 transitions, 12595 flow [2021-12-07 01:28:00,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:00,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:28:00,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:00,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-07 01:28:00,882 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:28:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1249983024, now seen corresponding path program 4 times [2021-12-07 01:28:00,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:00,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142723465] [2021-12-07 01:28:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:00,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:00,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142723465] [2021-12-07 01:28:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142723465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:00,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:00,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:28:00,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530040612] [2021-12-07 01:28:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:00,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:28:00,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:28:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:28:00,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:28:00,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 510 transitions, 12595 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:00,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:28:00,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:28:00,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:28:09,171 INFO L129 PetriNetUnfolder]: 8588/23472 cut-off events. [2021-12-07 01:28:09,172 INFO L130 PetriNetUnfolder]: For 189888/201166 co-relation queries the response was YES. [2021-12-07 01:28:09,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106480 conditions, 23472 events. 8588/23472 cut-off events. For 189888/201166 co-relation queries the response was YES. Maximal size of possible extension queue 3591. Compared 311048 event pairs, 3298 based on Foata normal form. 25/22197 useless extension candidates. Maximal degree in co-relation 106269. Up to 9128 conditions per place. [2021-12-07 01:28:09,739 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 154 selfloop transitions, 49 changer transitions 22/596 dead transitions. [2021-12-07 01:28:09,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 596 transitions, 13876 flow [2021-12-07 01:28:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:28:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:28:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1892 transitions. [2021-12-07 01:28:09,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629032258064516 [2021-12-07 01:28:09,741 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1892 transitions. [2021-12-07 01:28:09,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1892 transitions. [2021-12-07 01:28:09,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:28:09,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1892 transitions. [2021-12-07 01:28:09,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.6) internal successors, (1892), 20 states have internal predecessors, (1892), 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) [2021-12-07 01:28:09,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:28:09,744 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:28:09,744 INFO L186 Difference]: Start difference. First operand has 507 places, 510 transitions, 12595 flow. Second operand 20 states and 1892 transitions. [2021-12-07 01:28:09,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 596 transitions, 13876 flow [2021-12-07 01:28:13,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 596 transitions, 13605 flow, removed 134 selfloop flow, removed 4 redundant places. [2021-12-07 01:28:13,300 INFO L242 Difference]: Finished difference. Result has 535 places, 542 transitions, 12975 flow [2021-12-07 01:28:13,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12386, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12975, PETRI_PLACES=535, PETRI_TRANSITIONS=542} [2021-12-07 01:28:13,301 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 423 predicate places. [2021-12-07 01:28:13,301 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 542 transitions, 12975 flow [2021-12-07 01:28:13,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:13,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:28:13,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:13,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-07 01:28:13,302 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:28:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash 158013750, now seen corresponding path program 5 times [2021-12-07 01:28:13,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:13,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964910061] [2021-12-07 01:28:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:13,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:13,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:13,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964910061] [2021-12-07 01:28:13,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964910061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:13,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:13,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:28:13,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702878979] [2021-12-07 01:28:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:13,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:28:13,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:28:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:28:13,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:28:13,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 542 transitions, 12975 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:13,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:28:13,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:28:13,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:28:22,445 INFO L129 PetriNetUnfolder]: 9002/24968 cut-off events. [2021-12-07 01:28:22,445 INFO L130 PetriNetUnfolder]: For 232559/243918 co-relation queries the response was YES. [2021-12-07 01:28:23,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117002 conditions, 24968 events. 9002/24968 cut-off events. For 232559/243918 co-relation queries the response was YES. Maximal size of possible extension queue 3831. Compared 337245 event pairs, 2700 based on Foata normal form. 42/23808 useless extension candidates. Maximal degree in co-relation 116779. Up to 6951 conditions per place. [2021-12-07 01:28:23,150 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 176 selfloop transitions, 98 changer transitions 26/671 dead transitions. [2021-12-07 01:28:23,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 671 transitions, 14679 flow [2021-12-07 01:28:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:28:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-07 01:28:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2268 transitions. [2021-12-07 01:28:23,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2021-12-07 01:28:23,152 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2268 transitions. [2021-12-07 01:28:23,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2268 transitions. [2021-12-07 01:28:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:28:23,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2268 transitions. [2021-12-07 01:28:23,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.5) internal successors, (2268), 24 states have internal predecessors, (2268), 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) [2021-12-07 01:28:23,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:28:23,155 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 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) [2021-12-07 01:28:23,155 INFO L186 Difference]: Start difference. First operand has 535 places, 542 transitions, 12975 flow. Second operand 24 states and 2268 transitions. [2021-12-07 01:28:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 671 transitions, 14679 flow [2021-12-07 01:28:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 671 transitions, 14391 flow, removed 144 selfloop flow, removed 2 redundant places. [2021-12-07 01:28:26,872 INFO L242 Difference]: Finished difference. Result has 573 places, 571 transitions, 13512 flow [2021-12-07 01:28:26,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12759, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13512, PETRI_PLACES=573, PETRI_TRANSITIONS=571} [2021-12-07 01:28:26,873 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 461 predicate places. [2021-12-07 01:28:26,873 INFO L470 AbstractCegarLoop]: Abstraction has has 573 places, 571 transitions, 13512 flow [2021-12-07 01:28:26,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:26,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:28:26,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:26,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-07 01:28:26,874 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:28:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1089591306, now seen corresponding path program 6 times [2021-12-07 01:28:26,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:26,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216024873] [2021-12-07 01:28:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:26,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:26,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216024873] [2021-12-07 01:28:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216024873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:26,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:26,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:28:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273516190] [2021-12-07 01:28:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:26,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:28:26,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:28:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:28:26,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:28:26,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 571 transitions, 13512 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:26,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:28:26,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:28:26,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:28:36,666 INFO L129 PetriNetUnfolder]: 9116/25538 cut-off events. [2021-12-07 01:28:36,666 INFO L130 PetriNetUnfolder]: For 263967/275326 co-relation queries the response was YES. [2021-12-07 01:28:37,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125914 conditions, 25538 events. 9116/25538 cut-off events. For 263967/275326 co-relation queries the response was YES. Maximal size of possible extension queue 3901. Compared 346325 event pairs, 3524 based on Foata normal form. 76/24289 useless extension candidates. Maximal degree in co-relation 125673. Up to 10398 conditions per place. [2021-12-07 01:28:37,574 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 158 selfloop transitions, 91 changer transitions 24/644 dead transitions. [2021-12-07 01:28:37,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 644 transitions, 14868 flow [2021-12-07 01:28:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:28:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-07 01:28:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2075 transitions. [2021-12-07 01:28:37,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7606304985337243 [2021-12-07 01:28:37,631 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2075 transitions. [2021-12-07 01:28:37,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2075 transitions. [2021-12-07 01:28:37,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:28:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2075 transitions. [2021-12-07 01:28:37,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.31818181818181) internal successors, (2075), 22 states have internal predecessors, (2075), 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) [2021-12-07 01:28:37,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:28:37,634 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:28:37,634 INFO L186 Difference]: Start difference. First operand has 573 places, 571 transitions, 13512 flow. Second operand 22 states and 2075 transitions. [2021-12-07 01:28:37,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 644 transitions, 14868 flow [2021-12-07 01:28:42,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 644 transitions, 14652 flow, removed 95 selfloop flow, removed 4 redundant places. [2021-12-07 01:28:42,327 INFO L242 Difference]: Finished difference. Result has 601 places, 595 transitions, 14065 flow [2021-12-07 01:28:42,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13367, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=14065, PETRI_PLACES=601, PETRI_TRANSITIONS=595} [2021-12-07 01:28:42,327 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 489 predicate places. [2021-12-07 01:28:42,327 INFO L470 AbstractCegarLoop]: Abstraction has has 601 places, 595 transitions, 14065 flow [2021-12-07 01:28:42,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:42,328 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:28:42,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:42,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-07 01:28:42,328 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:28:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1211818460, now seen corresponding path program 7 times [2021-12-07 01:28:42,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:42,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359177455] [2021-12-07 01:28:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:42,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:42,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:42,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359177455] [2021-12-07 01:28:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359177455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:42,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:28:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748329033] [2021-12-07 01:28:42,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:28:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:28:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:28:42,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:28:42,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 595 transitions, 14065 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:42,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:28:42,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:28:42,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:28:52,450 INFO L129 PetriNetUnfolder]: 9134/25940 cut-off events. [2021-12-07 01:28:52,450 INFO L130 PetriNetUnfolder]: For 245601/256968 co-relation queries the response was YES. [2021-12-07 01:28:53,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127807 conditions, 25940 events. 9134/25940 cut-off events. For 245601/256968 co-relation queries the response was YES. Maximal size of possible extension queue 3957. Compared 354408 event pairs, 3614 based on Foata normal form. 78/24677 useless extension candidates. Maximal degree in co-relation 127555. Up to 11100 conditions per place. [2021-12-07 01:28:53,306 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 158 selfloop transitions, 95 changer transitions 19/643 dead transitions. [2021-12-07 01:28:53,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 643 transitions, 15074 flow [2021-12-07 01:28:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:28:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 01:28:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1518 transitions. [2021-12-07 01:28:53,307 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651209677419355 [2021-12-07 01:28:53,307 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1518 transitions. [2021-12-07 01:28:53,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1518 transitions. [2021-12-07 01:28:53,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:28:53,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1518 transitions. [2021-12-07 01:28:53,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.875) internal successors, (1518), 16 states have internal predecessors, (1518), 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) [2021-12-07 01:28:53,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:28:53,309 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2021-12-07 01:28:53,309 INFO L186 Difference]: Start difference. First operand has 601 places, 595 transitions, 14065 flow. Second operand 16 states and 1518 transitions. [2021-12-07 01:28:53,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 643 transitions, 15074 flow [2021-12-07 01:28:57,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 643 transitions, 14847 flow, removed 112 selfloop flow, removed 3 redundant places. [2021-12-07 01:28:57,702 INFO L242 Difference]: Finished difference. Result has 616 places, 603 transitions, 14198 flow [2021-12-07 01:28:57,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13854, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14198, PETRI_PLACES=616, PETRI_TRANSITIONS=603} [2021-12-07 01:28:57,703 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 504 predicate places. [2021-12-07 01:28:57,703 INFO L470 AbstractCegarLoop]: Abstraction has has 616 places, 603 transitions, 14198 flow [2021-12-07 01:28:57,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:57,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:28:57,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:57,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-07 01:28:57,703 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:28:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1482911844, now seen corresponding path program 8 times [2021-12-07 01:28:57,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415121038] [2021-12-07 01:28:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:57,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:57,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:57,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415121038] [2021-12-07 01:28:57,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415121038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:28:57,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:28:57,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:28:57,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969513731] [2021-12-07 01:28:57,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:28:57,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:28:57,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:28:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:28:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:28:57,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:28:57,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 603 transitions, 14198 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:28:57,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:28:57,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:28:57,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:29:08,518 INFO L129 PetriNetUnfolder]: 9509/27668 cut-off events. [2021-12-07 01:29:08,518 INFO L130 PetriNetUnfolder]: For 257619/269089 co-relation queries the response was YES. [2021-12-07 01:29:09,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136894 conditions, 27668 events. 9509/27668 cut-off events. For 257619/269089 co-relation queries the response was YES. Maximal size of possible extension queue 4227. Compared 385221 event pairs, 3992 based on Foata normal form. 61/26286 useless extension candidates. Maximal degree in co-relation 136639. Up to 11436 conditions per place. [2021-12-07 01:29:09,425 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 175 selfloop transitions, 108 changer transitions 19/673 dead transitions. [2021-12-07 01:29:09,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 673 transitions, 15619 flow [2021-12-07 01:29:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:29:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:29:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1888 transitions. [2021-12-07 01:29:09,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612903225806451 [2021-12-07 01:29:09,427 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1888 transitions. [2021-12-07 01:29:09,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1888 transitions. [2021-12-07 01:29:09,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:29:09,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1888 transitions. [2021-12-07 01:29:09,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.4) internal successors, (1888), 20 states have internal predecessors, (1888), 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) [2021-12-07 01:29:09,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:29:09,430 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 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) [2021-12-07 01:29:09,430 INFO L186 Difference]: Start difference. First operand has 616 places, 603 transitions, 14198 flow. Second operand 20 states and 1888 transitions. [2021-12-07 01:29:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 673 transitions, 15619 flow [2021-12-07 01:29:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 673 transitions, 15511 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-12-07 01:29:13,752 INFO L242 Difference]: Finished difference. Result has 643 places, 630 transitions, 14953 flow [2021-12-07 01:29:13,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=14110, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14953, PETRI_PLACES=643, PETRI_TRANSITIONS=630} [2021-12-07 01:29:13,753 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 531 predicate places. [2021-12-07 01:29:13,753 INFO L470 AbstractCegarLoop]: Abstraction has has 643 places, 630 transitions, 14953 flow [2021-12-07 01:29:13,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:13,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:29:13,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:13,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-07 01:29:13,754 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:29:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:13,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1733311278, now seen corresponding path program 9 times [2021-12-07 01:29:13,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:13,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931261750] [2021-12-07 01:29:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:13,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:13,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:13,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931261750] [2021-12-07 01:29:13,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931261750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:13,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:13,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:29:13,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329632590] [2021-12-07 01:29:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:13,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:29:13,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:29:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:29:13,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:29:13,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 630 transitions, 14953 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:13,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:29:13,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:29:13,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:29:25,635 INFO L129 PetriNetUnfolder]: 9998/29306 cut-off events. [2021-12-07 01:29:25,635 INFO L130 PetriNetUnfolder]: For 300755/312117 co-relation queries the response was YES. [2021-12-07 01:29:26,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152584 conditions, 29306 events. 9998/29306 cut-off events. For 300755/312117 co-relation queries the response was YES. Maximal size of possible extension queue 4530. Compared 414166 event pairs, 3816 based on Foata normal form. 55/27927 useless extension candidates. Maximal degree in co-relation 152317. Up to 11742 conditions per place. [2021-12-07 01:29:26,663 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 203 selfloop transitions, 99 changer transitions 15/688 dead transitions. [2021-12-07 01:29:26,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 688 transitions, 16360 flow [2021-12-07 01:29:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:29:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:29:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2021-12-07 01:29:26,665 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2021-12-07 01:29:26,665 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2021-12-07 01:29:26,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2021-12-07 01:29:26,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:29:26,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2021-12-07 01:29:26,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 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) [2021-12-07 01:29:26,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:29:26,667 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:29:26,667 INFO L186 Difference]: Start difference. First operand has 643 places, 630 transitions, 14953 flow. Second operand 17 states and 1613 transitions. [2021-12-07 01:29:26,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 688 transitions, 16360 flow [2021-12-07 01:29:32,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 688 transitions, 16115 flow, removed 101 selfloop flow, removed 3 redundant places. [2021-12-07 01:29:32,831 INFO L242 Difference]: Finished difference. Result has 660 places, 652 transitions, 15443 flow [2021-12-07 01:29:32,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=14787, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15443, PETRI_PLACES=660, PETRI_TRANSITIONS=652} [2021-12-07 01:29:32,832 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 548 predicate places. [2021-12-07 01:29:32,832 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 652 transitions, 15443 flow [2021-12-07 01:29:32,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:32,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:29:32,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:32,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-07 01:29:32,832 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:29:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1163362292, now seen corresponding path program 10 times [2021-12-07 01:29:32,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:32,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186729921] [2021-12-07 01:29:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:32,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:32,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:32,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186729921] [2021-12-07 01:29:32,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186729921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:32,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:32,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:29:32,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386148806] [2021-12-07 01:29:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:32,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:29:32,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:29:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:29:32,892 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:29:32,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 652 transitions, 15443 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:32,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:29:32,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:29:32,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:29:45,506 INFO L129 PetriNetUnfolder]: 10361/30380 cut-off events. [2021-12-07 01:29:45,507 INFO L130 PetriNetUnfolder]: For 293914/305402 co-relation queries the response was YES. [2021-12-07 01:29:46,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159834 conditions, 30380 events. 10361/30380 cut-off events. For 293914/305402 co-relation queries the response was YES. Maximal size of possible extension queue 4684. Compared 430859 event pairs, 4100 based on Foata normal form. 61/28961 useless extension candidates. Maximal degree in co-relation 159563. Up to 12036 conditions per place. [2021-12-07 01:29:46,606 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 201 selfloop transitions, 122 changer transitions 16/710 dead transitions. [2021-12-07 01:29:46,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 710 transitions, 16825 flow [2021-12-07 01:29:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:29:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:29:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2021-12-07 01:29:46,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2021-12-07 01:29:46,608 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2021-12-07 01:29:46,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2021-12-07 01:29:46,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:29:46,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2021-12-07 01:29:46,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 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) [2021-12-07 01:29:46,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:29:46,610 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 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) [2021-12-07 01:29:46,610 INFO L186 Difference]: Start difference. First operand has 660 places, 652 transitions, 15443 flow. Second operand 17 states and 1613 transitions. [2021-12-07 01:29:46,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 710 transitions, 16825 flow [2021-12-07 01:29:52,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 710 transitions, 16659 flow, removed 59 selfloop flow, removed 3 redundant places. [2021-12-07 01:29:52,903 INFO L242 Difference]: Finished difference. Result has 679 places, 673 transitions, 16033 flow [2021-12-07 01:29:52,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=15296, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=16033, PETRI_PLACES=679, PETRI_TRANSITIONS=673} [2021-12-07 01:29:52,904 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 567 predicate places. [2021-12-07 01:29:52,904 INFO L470 AbstractCegarLoop]: Abstraction has has 679 places, 673 transitions, 16033 flow [2021-12-07 01:29:52,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:52,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:29:52,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:29:52,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-07 01:29:52,904 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:29:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:29:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 361749148, now seen corresponding path program 11 times [2021-12-07 01:29:52,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:29:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580862498] [2021-12-07 01:29:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:29:52,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:29:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:29:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:29:52,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:29:52,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580862498] [2021-12-07 01:29:52,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580862498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:29:52,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:29:52,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:29:52,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023514290] [2021-12-07 01:29:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:29:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:29:52,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:29:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:29:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:29:52,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:29:52,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 673 transitions, 16033 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:29:52,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:29:52,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:29:52,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:30:06,327 INFO L129 PetriNetUnfolder]: 10412/31178 cut-off events. [2021-12-07 01:30:06,327 INFO L130 PetriNetUnfolder]: For 307893/319255 co-relation queries the response was YES. [2021-12-07 01:30:07,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164958 conditions, 31178 events. 10412/31178 cut-off events. For 307893/319255 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 448024 event pairs, 3900 based on Foata normal form. 55/29799 useless extension candidates. Maximal degree in co-relation 164681. Up to 12450 conditions per place. [2021-12-07 01:30:07,557 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 199 selfloop transitions, 127 changer transitions 20/717 dead transitions. [2021-12-07 01:30:07,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 717 transitions, 17195 flow [2021-12-07 01:30:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:30:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:30:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2021-12-07 01:30:07,559 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2021-12-07 01:30:07,559 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2021-12-07 01:30:07,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2021-12-07 01:30:07,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:30:07,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2021-12-07 01:30:07,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 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) [2021-12-07 01:30:07,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:30:07,561 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:30:07,561 INFO L186 Difference]: Start difference. First operand has 679 places, 673 transitions, 16033 flow. Second operand 18 states and 1703 transitions. [2021-12-07 01:30:07,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 717 transitions, 17195 flow [2021-12-07 01:30:15,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 717 transitions, 17055 flow, removed 70 selfloop flow, removed 2 redundant places. [2021-12-07 01:30:15,263 INFO L242 Difference]: Finished difference. Result has 697 places, 683 transitions, 16422 flow [2021-12-07 01:30:15,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=15909, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16422, PETRI_PLACES=697, PETRI_TRANSITIONS=683} [2021-12-07 01:30:15,264 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 585 predicate places. [2021-12-07 01:30:15,264 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 683 transitions, 16422 flow [2021-12-07 01:30:15,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:30:15,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:30:15,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:30:15,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-07 01:30:15,264 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:30:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1850801594, now seen corresponding path program 12 times [2021-12-07 01:30:15,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:15,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746155018] [2021-12-07 01:30:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:15,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:30:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:30:15,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:15,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746155018] [2021-12-07 01:30:15,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746155018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:30:15,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:30:15,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:30:15,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756878665] [2021-12-07 01:30:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:30:15,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:30:15,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:30:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:30:15,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:30:15,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 683 transitions, 16422 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:30:15,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:30:15,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:30:15,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:30:28,554 INFO L129 PetriNetUnfolder]: 10394/31538 cut-off events. [2021-12-07 01:30:28,554 INFO L130 PetriNetUnfolder]: For 310327/321691 co-relation queries the response was YES. [2021-12-07 01:30:29,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168102 conditions, 31538 events. 10394/31538 cut-off events. For 310327/321691 co-relation queries the response was YES. Maximal size of possible extension queue 4851. Compared 456398 event pairs, 3888 based on Foata normal form. 56/30152 useless extension candidates. Maximal degree in co-relation 167821. Up to 12384 conditions per place. [2021-12-07 01:30:29,927 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 213 selfloop transitions, 116 changer transitions 24/724 dead transitions. [2021-12-07 01:30:29,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 724 transitions, 17490 flow [2021-12-07 01:30:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:30:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 01:30:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1707 transitions. [2021-12-07 01:30:29,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647849462365591 [2021-12-07 01:30:29,929 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1707 transitions. [2021-12-07 01:30:29,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1707 transitions. [2021-12-07 01:30:29,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:30:29,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1707 transitions. [2021-12-07 01:30:29,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.83333333333333) internal successors, (1707), 18 states have internal predecessors, (1707), 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) [2021-12-07 01:30:29,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:30:29,932 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2021-12-07 01:30:29,932 INFO L186 Difference]: Start difference. First operand has 697 places, 683 transitions, 16422 flow. Second operand 18 states and 1707 transitions. [2021-12-07 01:30:29,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 724 transitions, 17490 flow [2021-12-07 01:30:38,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 724 transitions, 17339 flow, removed 41 selfloop flow, removed 7 redundant places. [2021-12-07 01:30:38,118 INFO L242 Difference]: Finished difference. Result has 710 places, 690 transitions, 16685 flow [2021-12-07 01:30:38,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=16273, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16685, PETRI_PLACES=710, PETRI_TRANSITIONS=690} [2021-12-07 01:30:38,119 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 598 predicate places. [2021-12-07 01:30:38,119 INFO L470 AbstractCegarLoop]: Abstraction has has 710 places, 690 transitions, 16685 flow [2021-12-07 01:30:38,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:30:38,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:30:38,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:30:38,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-07 01:30:38,120 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:30:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:30:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1413929618, now seen corresponding path program 13 times [2021-12-07 01:30:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:30:38,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976558463] [2021-12-07 01:30:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:30:38,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:30:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:30:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:30:38,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:30:38,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976558463] [2021-12-07 01:30:38,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976558463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:30:38,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:30:38,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:30:38,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889286271] [2021-12-07 01:30:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:30:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:30:38,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:30:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:30:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:30:38,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:30:38,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 690 transitions, 16685 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:30:38,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:30:38,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:30:38,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:30:52,420 INFO L129 PetriNetUnfolder]: 11264/33754 cut-off events. [2021-12-07 01:30:52,421 INFO L130 PetriNetUnfolder]: For 365824/377184 co-relation queries the response was YES. [2021-12-07 01:30:53,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185045 conditions, 33754 events. 11264/33754 cut-off events. For 365824/377184 co-relation queries the response was YES. Maximal size of possible extension queue 5225. Compared 490528 event pairs, 3484 based on Foata normal form. 42/32437 useless extension candidates. Maximal degree in co-relation 184765. Up to 11798 conditions per place. [2021-12-07 01:30:53,780 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 241 selfloop transitions, 145 changer transitions 23/780 dead transitions. [2021-12-07 01:30:53,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 780 transitions, 18568 flow [2021-12-07 01:30:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:30:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-07 01:30:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2073 transitions. [2021-12-07 01:30:53,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598973607038123 [2021-12-07 01:30:53,781 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2073 transitions. [2021-12-07 01:30:53,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2073 transitions. [2021-12-07 01:30:53,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:30:53,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2073 transitions. [2021-12-07 01:30:53,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.22727272727273) internal successors, (2073), 22 states have internal predecessors, (2073), 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) [2021-12-07 01:30:53,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:30:53,784 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2021-12-07 01:30:53,784 INFO L186 Difference]: Start difference. First operand has 710 places, 690 transitions, 16685 flow. Second operand 22 states and 2073 transitions. [2021-12-07 01:30:53,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 780 transitions, 18568 flow [2021-12-07 01:31:02,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 780 transitions, 18437 flow, removed 55 selfloop flow, removed 8 redundant places. [2021-12-07 01:31:02,453 INFO L242 Difference]: Finished difference. Result has 735 places, 724 transitions, 17637 flow [2021-12-07 01:31:02,454 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=16556, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=17637, PETRI_PLACES=735, PETRI_TRANSITIONS=724} [2021-12-07 01:31:02,454 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 623 predicate places. [2021-12-07 01:31:02,454 INFO L470 AbstractCegarLoop]: Abstraction has has 735 places, 724 transitions, 17637 flow [2021-12-07 01:31:02,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:31:02,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:31:02,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:31:02,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-07 01:31:02,455 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:31:02,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:31:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1476855182, now seen corresponding path program 14 times [2021-12-07 01:31:02,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:31:02,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739440199] [2021-12-07 01:31:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:31:02,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:31:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:31:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:31:02,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:31:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739440199] [2021-12-07 01:31:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739440199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:31:02,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:31:02,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:31:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070996302] [2021-12-07 01:31:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:31:02,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:31:02,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:31:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:31:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:31:02,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:31:02,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 724 transitions, 17637 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:31:02,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:31:02,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:31:02,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:31:17,894 INFO L129 PetriNetUnfolder]: 11582/35008 cut-off events. [2021-12-07 01:31:17,895 INFO L130 PetriNetUnfolder]: For 421189/432567 co-relation queries the response was YES. [2021-12-07 01:31:19,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200940 conditions, 35008 events. 11582/35008 cut-off events. For 421189/432567 co-relation queries the response was YES. Maximal size of possible extension queue 5412. Compared 512846 event pairs, 3562 based on Foata normal form. 42/33638 useless extension candidates. Maximal degree in co-relation 200653. Up to 12026 conditions per place. [2021-12-07 01:31:19,352 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 294 selfloop transitions, 107 changer transitions 21/793 dead transitions. [2021-12-07 01:31:19,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 793 transitions, 19409 flow [2021-12-07 01:31:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:31:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 01:31:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2021-12-07 01:31:19,354 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2021-12-07 01:31:19,354 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2021-12-07 01:31:19,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2021-12-07 01:31:19,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:31:19,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2021-12-07 01:31:19,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 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) [2021-12-07 01:31:19,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:31:19,357 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2021-12-07 01:31:19,357 INFO L186 Difference]: Start difference. First operand has 735 places, 724 transitions, 17637 flow. Second operand 21 states and 1982 transitions. [2021-12-07 01:31:19,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 793 transitions, 19409 flow [2021-12-07 01:31:29,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 793 transitions, 19209 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-12-07 01:31:29,814 INFO L242 Difference]: Finished difference. Result has 765 places, 749 transitions, 18334 flow [2021-12-07 01:31:29,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=17451, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18334, PETRI_PLACES=765, PETRI_TRANSITIONS=749} [2021-12-07 01:31:29,815 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 653 predicate places. [2021-12-07 01:31:29,815 INFO L470 AbstractCegarLoop]: Abstraction has has 765 places, 749 transitions, 18334 flow [2021-12-07 01:31:29,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:31:29,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:31:29,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:31:29,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-07 01:31:29,815 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-07 01:31:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:31:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2057124838, now seen corresponding path program 15 times [2021-12-07 01:31:29,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:31:29,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301364163] [2021-12-07 01:31:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:31:29,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:31:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:31:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:31:29,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:31:29,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301364163] [2021-12-07 01:31:29,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301364163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:31:29,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:31:29,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:31:29,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288819231] [2021-12-07 01:31:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:31:29,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:31:29,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:31:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:31:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:31:29,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-07 01:31:29,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 749 transitions, 18334 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 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) [2021-12-07 01:31:29,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:31:29,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-07 01:31:29,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand