./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-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_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/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_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/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_e033dc55-4dc6-40b9-b5b4-aff23e832844/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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:01:08,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:01:08,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:01:08,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:01:08,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:01:08,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:01:08,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:01:08,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:01:08,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:01:08,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:01:08,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:01:08,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:01:08,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:01:08,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:01:08,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:01:08,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:01:08,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:01:08,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:01:08,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:01:08,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:01:08,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:01:08,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:01:08,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:01:08,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:01:08,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:01:08,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:01:08,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:01:08,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:01:08,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:01:08,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:01:08,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:01:08,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:01:08,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:01:08,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:01:08,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:01:08,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:01:08,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:01:08,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:01:08,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:01:08,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:01:08,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:01:08,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:01:08,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:01:08,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:01:08,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:01:08,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:01:08,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:01:08,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:01:08,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:01:08,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:01:08,930 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:01:08,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:01:08,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:01:08,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:01:08,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:01:08,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:01:08,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:01:08,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:01:08,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:01:08,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:01:08,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:01:08,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:01:08,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:01:08,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:01:08,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:01:08,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:01:08,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:08,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:01:08,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:01:08,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:01:08,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:01:08,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:01:08,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:01:08,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:01:08,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:01:08,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:01:08,935 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_e033dc55-4dc6-40b9-b5b4-aff23e832844/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2021-12-06 21:01:09,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:01:09,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:01:09,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:01:09,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:01:09,131 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:01:09,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2021-12-06 21:01:09,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/data/2dc16da57/e4d7e0c0368d4441ad84e4bf089b09d6/FLAGc7e241112 [2021-12-06 21:01:09,565 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:01:09,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2021-12-06 21:01:09,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/data/2dc16da57/e4d7e0c0368d4441ad84e4bf089b09d6/FLAGc7e241112 [2021-12-06 21:01:09,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/data/2dc16da57/e4d7e0c0368d4441ad84e4bf089b09d6 [2021-12-06 21:01:09,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:01:09,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:01:09,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:09,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:01:09,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:01:09,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:09" (1/1) ... [2021-12-06 21:01:09,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b2b08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:09, skipping insertion in model container [2021-12-06 21:01:09,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:09" (1/1) ... [2021-12-06 21:01:09,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:01:09,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:01:10,108 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_e033dc55-4dc6-40b9-b5b4-aff23e832844/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2021-12-06 21:01:10,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:10,118 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:01:10,135 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_e033dc55-4dc6-40b9-b5b4-aff23e832844/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2021-12-06 21:01:10,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:10,147 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:01:10,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10 WrapperNode [2021-12-06 21:01:10,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:10,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:10,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:01:10,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:01:10,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,180 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2021-12-06 21:01:10,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:10,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:01:10,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:01:10,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:01:10,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:01:10,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:01:10,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:01:10,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:01:10,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (1/1) ... [2021-12-06 21:01:10,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:10,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:10,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:01:10,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e033dc55-4dc6-40b9-b5b4-aff23e832844/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:01:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:01:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 21:01:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 21:01:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 21:01:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 21:01:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 21:01:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 21:01:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:01:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:01:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:01:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:01:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:01:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:01:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:01:10,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 21:01:10,333 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:01:10,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:01:10,561 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:01:10,570 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:01:10,570 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 21:01:10,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:01:10 BoogieIcfgContainer [2021-12-06 21:01:10,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:01:10,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:01:10,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:01:10,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:01:10,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:01:09" (1/3) ... [2021-12-06 21:01:10,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2488d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:01:10, skipping insertion in model container [2021-12-06 21:01:10,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:10" (2/3) ... [2021-12-06 21:01:10,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2488d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:01:10, skipping insertion in model container [2021-12-06 21:01:10,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:01:10" (3/3) ... [2021-12-06 21:01:10,579 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2021-12-06 21:01:10,583 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 21:01:10,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:01:10,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:01:10,584 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 21:01:10,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,625 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,626 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,627 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,628 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,629 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,632 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,633 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,634 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,635 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,636 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,637 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,639 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,639 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,639 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,642 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,643 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,644 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,650 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,651 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,655 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,656 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,657 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,664 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,665 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,666 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,667 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,668 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,669 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,670 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,680 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,681 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:01:10,687 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-06 21:01:10,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:01:10,733 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 [2021-12-06 21:01:10,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 21:01:10,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 286 transitions, 596 flow [2021-12-06 21:01:10,825 INFO L129 PetriNetUnfolder]: 26/283 cut-off events. [2021-12-06 21:01:10,825 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 21:01:10,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 26/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 738 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2021-12-06 21:01:10,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 286 transitions, 596 flow [2021-12-06 21:01:10,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 562 flow [2021-12-06 21:01:10,879 INFO L129 PetriNetUnfolder]: 26/271 cut-off events. [2021-12-06 21:01:10,879 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 21:01:10,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:10,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:10,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1493606533, now seen corresponding path program 1 times [2021-12-06 21:01:10,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:10,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977128690] [2021-12-06 21:01:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:10,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:11,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977128690] [2021-12-06 21:01:11,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977128690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:11,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:11,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:11,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744710128] [2021-12-06 21:01:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:11,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:11,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:11,146 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2021-12-06 21:01:11,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 272 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:11,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2021-12-06 21:01:11,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:11,324 INFO L129 PetriNetUnfolder]: 87/962 cut-off events. [2021-12-06 21:01:11,324 INFO L130 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2021-12-06 21:01:11,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 962 events. 87/962 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6584 event pairs, 8 based on Foata normal form. 46/891 useless extension candidates. Maximal degree in co-relation 859. Up to 28 conditions per place. [2021-12-06 21:01:11,342 INFO L132 encePairwiseOnDemand]: 274/286 looper letters, 17 selfloop transitions, 2 changer transitions 2/271 dead transitions. [2021-12-06 21:01:11,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 271 transitions, 613 flow [2021-12-06 21:01:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2021-12-06 21:01:11,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9696969696969697 [2021-12-06 21:01:11,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2021-12-06 21:01:11,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2021-12-06 21:01:11,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2021-12-06 21:01:11,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,382 INFO L186 Difference]: Start difference. First operand has 256 places, 272 transitions, 562 flow. Second operand 3 states and 832 transitions. [2021-12-06 21:01:11,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 271 transitions, 613 flow [2021-12-06 21:01:11,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 591 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-06 21:01:11,393 INFO L242 Difference]: Finished difference. Result has 254 places, 264 transitions, 550 flow [2021-12-06 21:01:11,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=254, PETRI_TRANSITIONS=264} [2021-12-06 21:01:11,397 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2021-12-06 21:01:11,398 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 264 transitions, 550 flow [2021-12-06 21:01:11,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:11,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:11,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:01:11,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1388136453, now seen corresponding path program 1 times [2021-12-06 21:01:11,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129085527] [2021-12-06 21:01:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:11,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:11,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129085527] [2021-12-06 21:01:11,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129085527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:11,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:11,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:11,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926128431] [2021-12-06 21:01:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:11,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:11,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:11,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2021-12-06 21:01:11,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 264 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:11,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2021-12-06 21:01:11,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:11,766 INFO L129 PetriNetUnfolder]: 137/1588 cut-off events. [2021-12-06 21:01:11,766 INFO L130 PetriNetUnfolder]: For 56/59 co-relation queries the response was YES. [2021-12-06 21:01:11,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 1588 events. 137/1588 cut-off events. For 56/59 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13149 event pairs, 19 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 967. Up to 78 conditions per place. [2021-12-06 21:01:11,785 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 17 selfloop transitions, 5 changer transitions 0/272 dead transitions. [2021-12-06 21:01:11,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 272 transitions, 615 flow [2021-12-06 21:01:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2021-12-06 21:01:11,788 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-12-06 21:01:11,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2021-12-06 21:01:11,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2021-12-06 21:01:11,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:11,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2021-12-06 21:01:11,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,794 INFO L186 Difference]: Start difference. First operand has 254 places, 264 transitions, 550 flow. Second operand 3 states and 814 transitions. [2021-12-06 21:01:11,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 272 transitions, 615 flow [2021-12-06 21:01:11,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 272 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:01:11,799 INFO L242 Difference]: Finished difference. Result has 255 places, 267 transitions, 586 flow [2021-12-06 21:01:11,800 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=255, PETRI_TRANSITIONS=267} [2021-12-06 21:01:11,800 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, -1 predicate places. [2021-12-06 21:01:11,800 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 267 transitions, 586 flow [2021-12-06 21:01:11,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,801 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:11,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:11,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:01:11,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 378354523, now seen corresponding path program 1 times [2021-12-06 21:01:11,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776992020] [2021-12-06 21:01:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:11,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:11,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:11,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776992020] [2021-12-06 21:01:11,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776992020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:11,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:11,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:11,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059120378] [2021-12-06 21:01:11,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:11,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:11,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:11,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:11,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2021-12-06 21:01:11,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 267 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:11,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:11,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2021-12-06 21:01:11,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:12,060 INFO L129 PetriNetUnfolder]: 119/1497 cut-off events. [2021-12-06 21:01:12,060 INFO L130 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2021-12-06 21:01:12,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1497 events. 119/1497 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11223 event pairs, 19 based on Foata normal form. 12/1359 useless extension candidates. Maximal degree in co-relation 701. Up to 55 conditions per place. [2021-12-06 21:01:12,074 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 22 selfloop transitions, 3 changer transitions 0/275 dead transitions. [2021-12-06 21:01:12,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 275 transitions, 663 flow [2021-12-06 21:01:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2021-12-06 21:01:12,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-12-06 21:01:12,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2021-12-06 21:01:12,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2021-12-06 21:01:12,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:12,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2021-12-06 21:01:12,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,082 INFO L186 Difference]: Start difference. First operand has 255 places, 267 transitions, 586 flow. Second operand 3 states and 814 transitions. [2021-12-06 21:01:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 275 transitions, 663 flow [2021-12-06 21:01:12,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 275 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:12,087 INFO L242 Difference]: Finished difference. Result has 257 places, 270 transitions, 612 flow [2021-12-06 21:01:12,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=257, PETRI_TRANSITIONS=270} [2021-12-06 21:01:12,088 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1 predicate places. [2021-12-06 21:01:12,088 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 612 flow [2021-12-06 21:01:12,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:12,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:12,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:01:12,089 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1782641751, now seen corresponding path program 2 times [2021-12-06 21:01:12,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978502332] [2021-12-06 21:01:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:12,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:12,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978502332] [2021-12-06 21:01:12,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978502332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:12,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:12,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:12,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795382861] [2021-12-06 21:01:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:12,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:12,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:12,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2021-12-06 21:01:12,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 270 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:12,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2021-12-06 21:01:12,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:12,292 INFO L129 PetriNetUnfolder]: 74/1053 cut-off events. [2021-12-06 21:01:12,293 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-12-06 21:01:12,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 1053 events. 74/1053 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7174 event pairs, 8 based on Foata normal form. 0/960 useless extension candidates. Maximal degree in co-relation 910. Up to 28 conditions per place. [2021-12-06 21:01:12,302 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 17 selfloop transitions, 4 changer transitions 0/277 dead transitions. [2021-12-06 21:01:12,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 277 transitions, 677 flow [2021-12-06 21:01:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2021-12-06 21:01:12,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2021-12-06 21:01:12,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2021-12-06 21:01:12,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2021-12-06 21:01:12,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:12,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2021-12-06 21:01:12,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,310 INFO L186 Difference]: Start difference. First operand has 257 places, 270 transitions, 612 flow. Second operand 3 states and 816 transitions. [2021-12-06 21:01:12,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 277 transitions, 677 flow [2021-12-06 21:01:12,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 277 transitions, 668 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-06 21:01:12,316 INFO L242 Difference]: Finished difference. Result has 260 places, 272 transitions, 635 flow [2021-12-06 21:01:12,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=635, PETRI_PLACES=260, PETRI_TRANSITIONS=272} [2021-12-06 21:01:12,317 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 4 predicate places. [2021-12-06 21:01:12,317 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 272 transitions, 635 flow [2021-12-06 21:01:12,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:12,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:12,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:01:12,318 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash 29985841, now seen corresponding path program 1 times [2021-12-06 21:01:12,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:12,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446735491] [2021-12-06 21:01:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:12,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:12,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446735491] [2021-12-06 21:01:12,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446735491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:12,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:12,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:12,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633058865] [2021-12-06 21:01:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:12,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:12,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:12,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2021-12-06 21:01:12,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 272 transitions, 635 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:12,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2021-12-06 21:01:12,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:12,736 INFO L129 PetriNetUnfolder]: 209/3217 cut-off events. [2021-12-06 21:01:12,736 INFO L130 PetriNetUnfolder]: For 86/135 co-relation queries the response was YES. [2021-12-06 21:01:12,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3519 conditions, 3217 events. 209/3217 cut-off events. For 86/135 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 33504 event pairs, 38 based on Foata normal form. 0/2922 useless extension candidates. Maximal degree in co-relation 1975. Up to 143 conditions per place. [2021-12-06 21:01:12,757 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 18 selfloop transitions, 6 changer transitions 0/280 dead transitions. [2021-12-06 21:01:12,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 280 transitions, 703 flow [2021-12-06 21:01:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2021-12-06 21:01:12,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2021-12-06 21:01:12,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2021-12-06 21:01:12,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2021-12-06 21:01:12,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:12,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2021-12-06 21:01:12,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,765 INFO L186 Difference]: Start difference. First operand has 260 places, 272 transitions, 635 flow. Second operand 3 states and 811 transitions. [2021-12-06 21:01:12,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 280 transitions, 703 flow [2021-12-06 21:01:12,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 280 transitions, 691 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:12,770 INFO L242 Difference]: Finished difference. Result has 262 places, 276 transitions, 671 flow [2021-12-06 21:01:12,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=671, PETRI_PLACES=262, PETRI_TRANSITIONS=276} [2021-12-06 21:01:12,771 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 6 predicate places. [2021-12-06 21:01:12,772 INFO L470 AbstractCegarLoop]: Abstraction has has 262 places, 276 transitions, 671 flow [2021-12-06 21:01:12,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,772 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:12,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:12,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:01:12,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1606902331, now seen corresponding path program 1 times [2021-12-06 21:01:12,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:12,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259857418] [2021-12-06 21:01:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:12,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:12,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259857418] [2021-12-06 21:01:12,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259857418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:12,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:12,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:12,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733683235] [2021-12-06 21:01:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:12,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:12,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:12,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2021-12-06 21:01:12,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 276 transitions, 671 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:12,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:12,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2021-12-06 21:01:12,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:13,047 INFO L129 PetriNetUnfolder]: 144/2249 cut-off events. [2021-12-06 21:01:13,047 INFO L130 PetriNetUnfolder]: For 203/248 co-relation queries the response was YES. [2021-12-06 21:01:13,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 2249 events. 144/2249 cut-off events. For 203/248 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20271 event pairs, 24 based on Foata normal form. 28/2113 useless extension candidates. Maximal degree in co-relation 1281. Up to 96 conditions per place. [2021-12-06 21:01:13,072 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 24 selfloop transitions, 4 changer transitions 0/284 dead transitions. [2021-12-06 21:01:13,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 284 transitions, 755 flow [2021-12-06 21:01:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:01:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2021-12-06 21:01:13,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2021-12-06 21:01:13,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2021-12-06 21:01:13,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2021-12-06 21:01:13,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:13,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2021-12-06 21:01:13,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,080 INFO L186 Difference]: Start difference. First operand has 262 places, 276 transitions, 671 flow. Second operand 3 states and 811 transitions. [2021-12-06 21:01:13,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 284 transitions, 755 flow [2021-12-06 21:01:13,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 284 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:13,086 INFO L242 Difference]: Finished difference. Result has 264 places, 280 transitions, 707 flow [2021-12-06 21:01:13,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=707, PETRI_PLACES=264, PETRI_TRANSITIONS=280} [2021-12-06 21:01:13,087 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 8 predicate places. [2021-12-06 21:01:13,087 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 280 transitions, 707 flow [2021-12-06 21:01:13,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:13,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:13,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:01:13,088 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash -297655397, now seen corresponding path program 1 times [2021-12-06 21:01:13,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:13,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803150039] [2021-12-06 21:01:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:13,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:13,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803150039] [2021-12-06 21:01:13,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803150039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:13,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:13,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:13,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124268281] [2021-12-06 21:01:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:13,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:13,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:13,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2021-12-06 21:01:13,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 280 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:13,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2021-12-06 21:01:13,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:13,437 INFO L129 PetriNetUnfolder]: 123/1881 cut-off events. [2021-12-06 21:01:13,437 INFO L130 PetriNetUnfolder]: For 104/253 co-relation queries the response was YES. [2021-12-06 21:01:13,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 1881 events. 123/1881 cut-off events. For 104/253 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 17953 event pairs, 26 based on Foata normal form. 2/1753 useless extension candidates. Maximal degree in co-relation 1683. Up to 133 conditions per place. [2021-12-06 21:01:13,450 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 23 selfloop transitions, 2 changer transitions 17/300 dead transitions. [2021-12-06 21:01:13,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 300 transitions, 844 flow [2021-12-06 21:01:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:01:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2021-12-06 21:01:13,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2021-12-06 21:01:13,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2021-12-06 21:01:13,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2021-12-06 21:01:13,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:13,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2021-12-06 21:01:13,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,468 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,468 INFO L186 Difference]: Start difference. First operand has 264 places, 280 transitions, 707 flow. Second operand 9 states and 2320 transitions. [2021-12-06 21:01:13,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 300 transitions, 844 flow [2021-12-06 21:01:13,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 300 transitions, 832 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-12-06 21:01:13,474 INFO L242 Difference]: Finished difference. Result has 278 places, 281 transitions, 718 flow [2021-12-06 21:01:13,475 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=718, PETRI_PLACES=278, PETRI_TRANSITIONS=281} [2021-12-06 21:01:13,475 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 22 predicate places. [2021-12-06 21:01:13,475 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 281 transitions, 718 flow [2021-12-06 21:01:13,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:13,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:13,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:01:13,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1373554015, now seen corresponding path program 1 times [2021-12-06 21:01:13,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020061263] [2021-12-06 21:01:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:13,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:13,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:13,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020061263] [2021-12-06 21:01:13,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020061263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:13,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:13,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:13,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917386270] [2021-12-06 21:01:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:13,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:13,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:13,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:13,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:13,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:13,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 281 transitions, 718 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:13,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:13,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:13,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:14,284 INFO L129 PetriNetUnfolder]: 960/4324 cut-off events. [2021-12-06 21:01:14,284 INFO L130 PetriNetUnfolder]: For 269/366 co-relation queries the response was YES. [2021-12-06 21:01:14,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 4324 events. 960/4324 cut-off events. For 269/366 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 46936 event pairs, 215 based on Foata normal form. 3/4090 useless extension candidates. Maximal degree in co-relation 6457. Up to 911 conditions per place. [2021-12-06 21:01:14,328 INFO L132 encePairwiseOnDemand]: 272/286 looper letters, 65 selfloop transitions, 46 changer transitions 22/384 dead transitions. [2021-12-06 21:01:14,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 384 transitions, 1224 flow [2021-12-06 21:01:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:01:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 21:01:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5524 transitions. [2021-12-06 21:01:14,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8779402415766052 [2021-12-06 21:01:14,340 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5524 transitions. [2021-12-06 21:01:14,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5524 transitions. [2021-12-06 21:01:14,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:14,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5524 transitions. [2021-12-06 21:01:14,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 251.0909090909091) internal successors, (5524), 22 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:14,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:14,367 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:14,367 INFO L186 Difference]: Start difference. First operand has 278 places, 281 transitions, 718 flow. Second operand 22 states and 5524 transitions. [2021-12-06 21:01:14,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 384 transitions, 1224 flow [2021-12-06 21:01:14,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 384 transitions, 1207 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-12-06 21:01:14,374 INFO L242 Difference]: Finished difference. Result has 302 places, 326 transitions, 996 flow [2021-12-06 21:01:14,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=996, PETRI_PLACES=302, PETRI_TRANSITIONS=326} [2021-12-06 21:01:14,375 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 46 predicate places. [2021-12-06 21:01:14,375 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 326 transitions, 996 flow [2021-12-06 21:01:14,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:14,376 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:14,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:14,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:01:14,377 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1394085275, now seen corresponding path program 1 times [2021-12-06 21:01:14,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:14,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077196209] [2021-12-06 21:01:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:14,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:14,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077196209] [2021-12-06 21:01:14,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077196209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:14,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:14,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:14,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144630818] [2021-12-06 21:01:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:14,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:14,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:14,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:14,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 326 transitions, 996 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:14,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:14,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:14,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:15,237 INFO L129 PetriNetUnfolder]: 1007/4631 cut-off events. [2021-12-06 21:01:15,237 INFO L130 PetriNetUnfolder]: For 3320/3435 co-relation queries the response was YES. [2021-12-06 21:01:15,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9706 conditions, 4631 events. 1007/4631 cut-off events. For 3320/3435 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51785 event pairs, 480 based on Foata normal form. 2/4409 useless extension candidates. Maximal degree in co-relation 9656. Up to 1392 conditions per place. [2021-12-06 21:01:15,273 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 120 selfloop transitions, 31 changer transitions 28/430 dead transitions. [2021-12-06 21:01:15,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 430 transitions, 1757 flow [2021-12-06 21:01:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 21:01:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 21:01:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2021-12-06 21:01:15,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2021-12-06 21:01:15,299 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2021-12-06 21:01:15,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2021-12-06 21:01:15,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:15,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2021-12-06 21:01:15,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:15,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:15,334 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:15,334 INFO L186 Difference]: Start difference. First operand has 302 places, 326 transitions, 996 flow. Second operand 24 states and 6015 transitions. [2021-12-06 21:01:15,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 430 transitions, 1757 flow [2021-12-06 21:01:15,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 430 transitions, 1747 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:15,365 INFO L242 Difference]: Finished difference. Result has 341 places, 355 transitions, 1319 flow [2021-12-06 21:01:15,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1319, PETRI_PLACES=341, PETRI_TRANSITIONS=355} [2021-12-06 21:01:15,366 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 85 predicate places. [2021-12-06 21:01:15,366 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 355 transitions, 1319 flow [2021-12-06 21:01:15,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:15,366 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:15,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:15,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:01:15,367 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2142703709, now seen corresponding path program 2 times [2021-12-06 21:01:15,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210820829] [2021-12-06 21:01:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:15,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:15,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:15,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210820829] [2021-12-06 21:01:15,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210820829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:15,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:15,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:15,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882244773] [2021-12-06 21:01:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:15,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:15,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:15,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:15,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 355 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:15,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:15,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:15,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:16,327 INFO L129 PetriNetUnfolder]: 1092/4901 cut-off events. [2021-12-06 21:01:16,327 INFO L130 PetriNetUnfolder]: For 9057/9172 co-relation queries the response was YES. [2021-12-06 21:01:16,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13202 conditions, 4901 events. 1092/4901 cut-off events. For 9057/9172 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54836 event pairs, 562 based on Foata normal form. 4/4652 useless extension candidates. Maximal degree in co-relation 13133. Up to 1583 conditions per place. [2021-12-06 21:01:16,374 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 123 selfloop transitions, 41 changer transitions 18/433 dead transitions. [2021-12-06 21:01:16,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 433 transitions, 2280 flow [2021-12-06 21:01:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:01:16,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:01:16,383 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:01:16,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:01:16,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:16,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:01:16,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:16,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:16,399 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:16,399 INFO L186 Difference]: Start difference. First operand has 341 places, 355 transitions, 1319 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:01:16,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 433 transitions, 2280 flow [2021-12-06 21:01:16,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 433 transitions, 2052 flow, removed 114 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:16,461 INFO L242 Difference]: Finished difference. Result has 364 places, 384 transitions, 1599 flow [2021-12-06 21:01:16,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1599, PETRI_PLACES=364, PETRI_TRANSITIONS=384} [2021-12-06 21:01:16,462 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 108 predicate places. [2021-12-06 21:01:16,462 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 384 transitions, 1599 flow [2021-12-06 21:01:16,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:16,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:16,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:16,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:01:16,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2035053495, now seen corresponding path program 3 times [2021-12-06 21:01:16,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:16,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156125974] [2021-12-06 21:01:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:16,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:16,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:16,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156125974] [2021-12-06 21:01:16,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156125974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:16,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:16,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:16,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932798043] [2021-12-06 21:01:16,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:16,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:16,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:16,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:16,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 384 transitions, 1599 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:16,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:16,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:16,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:17,490 INFO L129 PetriNetUnfolder]: 1157/5281 cut-off events. [2021-12-06 21:01:17,491 INFO L130 PetriNetUnfolder]: For 10719/10834 co-relation queries the response was YES. [2021-12-06 21:01:17,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14775 conditions, 5281 events. 1157/5281 cut-off events. For 10719/10834 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 60501 event pairs, 541 based on Foata normal form. 2/5040 useless extension candidates. Maximal degree in co-relation 14697. Up to 1617 conditions per place. [2021-12-06 21:01:17,538 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 130 selfloop transitions, 53 changer transitions 14/448 dead transitions. [2021-12-06 21:01:17,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 448 transitions, 2510 flow [2021-12-06 21:01:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:01:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 21:01:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2021-12-06 21:01:17,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2021-12-06 21:01:17,545 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2021-12-06 21:01:17,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2021-12-06 21:01:17,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:17,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2021-12-06 21:01:17,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:17,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:17,563 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:17,563 INFO L186 Difference]: Start difference. First operand has 364 places, 384 transitions, 1599 flow. Second operand 16 states and 4014 transitions. [2021-12-06 21:01:17,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 448 transitions, 2510 flow [2021-12-06 21:01:17,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 448 transitions, 2386 flow, removed 62 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:17,655 INFO L242 Difference]: Finished difference. Result has 386 places, 403 transitions, 1892 flow [2021-12-06 21:01:17,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1892, PETRI_PLACES=386, PETRI_TRANSITIONS=403} [2021-12-06 21:01:17,657 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 130 predicate places. [2021-12-06 21:01:17,657 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 403 transitions, 1892 flow [2021-12-06 21:01:17,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:17,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:17,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:17,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:01:17,658 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1940695569, now seen corresponding path program 4 times [2021-12-06 21:01:17,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799228537] [2021-12-06 21:01:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:17,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:17,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799228537] [2021-12-06 21:01:17,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799228537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:17,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:17,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:17,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930584574] [2021-12-06 21:01:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:17,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:17,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:17,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:17,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 403 transitions, 1892 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:17,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:17,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:17,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:18,767 INFO L129 PetriNetUnfolder]: 1294/5780 cut-off events. [2021-12-06 21:01:18,767 INFO L130 PetriNetUnfolder]: For 17111/17235 co-relation queries the response was YES. [2021-12-06 21:01:18,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 5780 events. 1294/5780 cut-off events. For 17111/17235 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 66911 event pairs, 599 based on Foata normal form. 4/5534 useless extension candidates. Maximal degree in co-relation 17335. Up to 1691 conditions per place. [2021-12-06 21:01:18,819 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 166 selfloop transitions, 44 changer transitions 17/478 dead transitions. [2021-12-06 21:01:18,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 478 transitions, 3090 flow [2021-12-06 21:01:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:01:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:01:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2021-12-06 21:01:18,822 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2021-12-06 21:01:18,822 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2021-12-06 21:01:18,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2021-12-06 21:01:18,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:18,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2021-12-06 21:01:18,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:18,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:18,833 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:18,833 INFO L186 Difference]: Start difference. First operand has 386 places, 403 transitions, 1892 flow. Second operand 17 states and 4268 transitions. [2021-12-06 21:01:18,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 478 transitions, 3090 flow [2021-12-06 21:01:18,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 478 transitions, 2960 flow, removed 56 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:18,920 INFO L242 Difference]: Finished difference. Result has 408 places, 432 transitions, 2364 flow [2021-12-06 21:01:18,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2364, PETRI_PLACES=408, PETRI_TRANSITIONS=432} [2021-12-06 21:01:18,921 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 152 predicate places. [2021-12-06 21:01:18,921 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 432 transitions, 2364 flow [2021-12-06 21:01:18,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:18,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:18,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:18,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:01:18,922 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1748130669, now seen corresponding path program 5 times [2021-12-06 21:01:18,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:18,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629983594] [2021-12-06 21:01:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:18,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:18,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:18,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629983594] [2021-12-06 21:01:18,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629983594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:18,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:18,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:18,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271157857] [2021-12-06 21:01:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:18,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:18,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:18,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:18,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 432 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:19,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:19,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:19,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:20,248 INFO L129 PetriNetUnfolder]: 1357/6057 cut-off events. [2021-12-06 21:01:20,248 INFO L130 PetriNetUnfolder]: For 23009/23142 co-relation queries the response was YES. [2021-12-06 21:01:20,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19519 conditions, 6057 events. 1357/6057 cut-off events. For 23009/23142 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 71249 event pairs, 559 based on Foata normal form. 11/5825 useless extension candidates. Maximal degree in co-relation 19422. Up to 1709 conditions per place. [2021-12-06 21:01:20,372 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 158 selfloop transitions, 83 changer transitions 24/516 dead transitions. [2021-12-06 21:01:20,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 516 transitions, 3730 flow [2021-12-06 21:01:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:01:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 21:01:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2021-12-06 21:01:20,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2021-12-06 21:01:20,376 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2021-12-06 21:01:20,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2021-12-06 21:01:20,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:20,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2021-12-06 21:01:20,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:20,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:20,387 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:20,387 INFO L186 Difference]: Start difference. First operand has 408 places, 432 transitions, 2364 flow. Second operand 22 states and 5507 transitions. [2021-12-06 21:01:20,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 516 transitions, 3730 flow [2021-12-06 21:01:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 516 transitions, 3462 flow, removed 134 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:20,481 INFO L242 Difference]: Finished difference. Result has 438 places, 460 transitions, 2806 flow [2021-12-06 21:01:20,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2806, PETRI_PLACES=438, PETRI_TRANSITIONS=460} [2021-12-06 21:01:20,482 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 182 predicate places. [2021-12-06 21:01:20,482 INFO L470 AbstractCegarLoop]: Abstraction has has 438 places, 460 transitions, 2806 flow [2021-12-06 21:01:20,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:20,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:20,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:20,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:01:20,482 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash -854273631, now seen corresponding path program 6 times [2021-12-06 21:01:20,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:20,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340857837] [2021-12-06 21:01:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:20,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:20,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340857837] [2021-12-06 21:01:20,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340857837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:20,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:20,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:20,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488267140] [2021-12-06 21:01:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:20,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:20,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:20,561 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:20,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 460 transitions, 2806 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:20,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:20,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:20,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:21,758 INFO L129 PetriNetUnfolder]: 1414/6351 cut-off events. [2021-12-06 21:01:21,758 INFO L130 PetriNetUnfolder]: For 29087/29220 co-relation queries the response was YES. [2021-12-06 21:01:21,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21474 conditions, 6351 events. 1414/6351 cut-off events. For 29087/29220 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 75858 event pairs, 586 based on Foata normal form. 5/6104 useless extension candidates. Maximal degree in co-relation 21365. Up to 1814 conditions per place. [2021-12-06 21:01:21,827 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 185 selfloop transitions, 76 changer transitions 16/528 dead transitions. [2021-12-06 21:01:21,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 528 transitions, 4194 flow [2021-12-06 21:01:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:01:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:01:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2021-12-06 21:01:21,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2021-12-06 21:01:21,831 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2021-12-06 21:01:21,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2021-12-06 21:01:21,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:21,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2021-12-06 21:01:21,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:21,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:21,839 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:21,839 INFO L186 Difference]: Start difference. First operand has 438 places, 460 transitions, 2806 flow. Second operand 17 states and 4265 transitions. [2021-12-06 21:01:21,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 528 transitions, 4194 flow [2021-12-06 21:01:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 528 transitions, 3998 flow, removed 96 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:21,976 INFO L242 Difference]: Finished difference. Result has 460 places, 487 transitions, 3408 flow [2021-12-06 21:01:21,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3408, PETRI_PLACES=460, PETRI_TRANSITIONS=487} [2021-12-06 21:01:21,977 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 204 predicate places. [2021-12-06 21:01:21,977 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 487 transitions, 3408 flow [2021-12-06 21:01:21,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:21,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:21,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:21,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:01:21,978 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1348829887, now seen corresponding path program 7 times [2021-12-06 21:01:21,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:21,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354401822] [2021-12-06 21:01:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:21,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:22,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354401822] [2021-12-06 21:01:22,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354401822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:22,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:22,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:22,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899213952] [2021-12-06 21:01:22,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:22,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:22,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:22,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:22,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:22,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 487 transitions, 3408 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:22,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:22,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:22,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:23,299 INFO L129 PetriNetUnfolder]: 1423/6554 cut-off events. [2021-12-06 21:01:23,299 INFO L130 PetriNetUnfolder]: For 37589/37775 co-relation queries the response was YES. [2021-12-06 21:01:23,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22781 conditions, 6554 events. 1423/6554 cut-off events. For 37589/37775 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 78659 event pairs, 594 based on Foata normal form. 24/6327 useless extension candidates. Maximal degree in co-relation 22663. Up to 1825 conditions per place. [2021-12-06 21:01:23,380 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 170 selfloop transitions, 98 changer transitions 23/542 dead transitions. [2021-12-06 21:01:23,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 542 transitions, 4530 flow [2021-12-06 21:01:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:01:23,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:01:23,384 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:01:23,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:01:23,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:23,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:01:23,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,392 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,392 INFO L186 Difference]: Start difference. First operand has 460 places, 487 transitions, 3408 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:01:23,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 542 transitions, 4530 flow [2021-12-06 21:01:23,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 542 transitions, 4224 flow, removed 153 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:23,570 INFO L242 Difference]: Finished difference. Result has 481 places, 499 transitions, 3613 flow [2021-12-06 21:01:23,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3613, PETRI_PLACES=481, PETRI_TRANSITIONS=499} [2021-12-06 21:01:23,571 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 225 predicate places. [2021-12-06 21:01:23,572 INFO L470 AbstractCegarLoop]: Abstraction has has 481 places, 499 transitions, 3613 flow [2021-12-06 21:01:23,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:23,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:23,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:01:23,572 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1324436189, now seen corresponding path program 8 times [2021-12-06 21:01:23,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721014573] [2021-12-06 21:01:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:23,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:23,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:23,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721014573] [2021-12-06 21:01:23,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721014573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:23,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:23,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:23,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855782343] [2021-12-06 21:01:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:23,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:23,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:23,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:23,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:23,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 499 transitions, 3613 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:23,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:23,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:23,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:25,239 INFO L129 PetriNetUnfolder]: 1455/6847 cut-off events. [2021-12-06 21:01:25,239 INFO L130 PetriNetUnfolder]: For 41796/41938 co-relation queries the response was YES. [2021-12-06 21:01:25,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 6847 events. 1455/6847 cut-off events. For 41796/41938 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 84051 event pairs, 579 based on Foata normal form. 11/6607 useless extension candidates. Maximal degree in co-relation 24104. Up to 1825 conditions per place. [2021-12-06 21:01:25,347 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 215 selfloop transitions, 83 changer transitions 23/572 dead transitions. [2021-12-06 21:01:25,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 572 transitions, 5227 flow [2021-12-06 21:01:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:01:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 21:01:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2021-12-06 21:01:25,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2021-12-06 21:01:25,352 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2021-12-06 21:01:25,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2021-12-06 21:01:25,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:25,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2021-12-06 21:01:25,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:25,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:25,371 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:25,372 INFO L186 Difference]: Start difference. First operand has 481 places, 499 transitions, 3613 flow. Second operand 21 states and 5261 transitions. [2021-12-06 21:01:25,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 572 transitions, 5227 flow [2021-12-06 21:01:25,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 572 transitions, 5086 flow, removed 51 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:25,613 INFO L242 Difference]: Finished difference. Result has 510 places, 526 transitions, 4302 flow [2021-12-06 21:01:25,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4302, PETRI_PLACES=510, PETRI_TRANSITIONS=526} [2021-12-06 21:01:25,614 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 254 predicate places. [2021-12-06 21:01:25,614 INFO L470 AbstractCegarLoop]: Abstraction has has 510 places, 526 transitions, 4302 flow [2021-12-06 21:01:25,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:25,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:25,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:25,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:01:25,615 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1929026691, now seen corresponding path program 9 times [2021-12-06 21:01:25,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24544422] [2021-12-06 21:01:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:25,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:25,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:25,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24544422] [2021-12-06 21:01:25,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24544422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:25,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:25,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:25,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455901425] [2021-12-06 21:01:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:25,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:25,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:25,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:25,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:25,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 526 transitions, 4302 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:25,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:25,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:25,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:27,285 INFO L129 PetriNetUnfolder]: 1500/7096 cut-off events. [2021-12-06 21:01:27,285 INFO L130 PetriNetUnfolder]: For 54862/55019 co-relation queries the response was YES. [2021-12-06 21:01:27,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26457 conditions, 7096 events. 1500/7096 cut-off events. For 54862/55019 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 87331 event pairs, 522 based on Foata normal form. 4/6857 useless extension candidates. Maximal degree in co-relation 26319. Up to 1456 conditions per place. [2021-12-06 21:01:27,382 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 236 selfloop transitions, 133 changer transitions 26/646 dead transitions. [2021-12-06 21:01:27,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 646 transitions, 6495 flow [2021-12-06 21:01:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 21:01:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 21:01:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2021-12-06 21:01:27,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2021-12-06 21:01:27,386 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2021-12-06 21:01:27,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2021-12-06 21:01:27,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:27,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2021-12-06 21:01:27,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,397 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,397 INFO L186 Difference]: Start difference. First operand has 510 places, 526 transitions, 4302 flow. Second operand 24 states and 6012 transitions. [2021-12-06 21:01:27,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 646 transitions, 6495 flow [2021-12-06 21:01:27,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 646 transitions, 6175 flow, removed 160 selfloop flow, removed 2 redundant places. [2021-12-06 21:01:27,664 INFO L242 Difference]: Finished difference. Result has 548 places, 552 transitions, 5048 flow [2021-12-06 21:01:27,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5048, PETRI_PLACES=548, PETRI_TRANSITIONS=552} [2021-12-06 21:01:27,665 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 292 predicate places. [2021-12-06 21:01:27,665 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 552 transitions, 5048 flow [2021-12-06 21:01:27,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:27,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:27,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:01:27,665 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 625378761, now seen corresponding path program 10 times [2021-12-06 21:01:27,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363224243] [2021-12-06 21:01:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:27,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:27,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:27,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363224243] [2021-12-06 21:01:27,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363224243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:27,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:27,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:27,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936837513] [2021-12-06 21:01:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:27,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:27,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:27,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:27,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 552 transitions, 5048 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:27,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:27,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:29,477 INFO L129 PetriNetUnfolder]: 1534/7181 cut-off events. [2021-12-06 21:01:29,477 INFO L130 PetriNetUnfolder]: For 63086/63258 co-relation queries the response was YES. [2021-12-06 21:01:29,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28394 conditions, 7181 events. 1534/7181 cut-off events. For 63086/63258 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 88874 event pairs, 628 based on Foata normal form. 2/6918 useless extension candidates. Maximal degree in co-relation 28238. Up to 1963 conditions per place. [2021-12-06 21:01:29,597 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 242 selfloop transitions, 97 changer transitions 17/607 dead transitions. [2021-12-06 21:01:29,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 607 transitions, 6620 flow [2021-12-06 21:01:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2021-12-06 21:01:29,601 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2021-12-06 21:01:29,601 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2021-12-06 21:01:29,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2021-12-06 21:01:29,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:29,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2021-12-06 21:01:29,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:29,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:29,611 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:29,611 INFO L186 Difference]: Start difference. First operand has 548 places, 552 transitions, 5048 flow. Second operand 18 states and 4515 transitions. [2021-12-06 21:01:29,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 607 transitions, 6620 flow [2021-12-06 21:01:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 607 transitions, 6387 flow, removed 90 selfloop flow, removed 4 redundant places. [2021-12-06 21:01:29,987 INFO L242 Difference]: Finished difference. Result has 567 places, 571 transitions, 5594 flow [2021-12-06 21:01:29,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4836, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5594, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2021-12-06 21:01:29,988 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 311 predicate places. [2021-12-06 21:01:29,988 INFO L470 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 5594 flow [2021-12-06 21:01:29,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:29,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:29,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:29,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:01:29,989 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 804127363, now seen corresponding path program 11 times [2021-12-06 21:01:29,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:29,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268468941] [2021-12-06 21:01:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:29,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:30,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268468941] [2021-12-06 21:01:30,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268468941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:30,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:30,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:30,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045159120] [2021-12-06 21:01:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:30,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:30,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:30,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:30,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 5594 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:30,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:30,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:30,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:31,688 INFO L129 PetriNetUnfolder]: 1540/7388 cut-off events. [2021-12-06 21:01:31,688 INFO L130 PetriNetUnfolder]: For 57855/58015 co-relation queries the response was YES. [2021-12-06 21:01:31,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28889 conditions, 7388 events. 1540/7388 cut-off events. For 57855/58015 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 92344 event pairs, 601 based on Foata normal form. 11/7143 useless extension candidates. Maximal degree in co-relation 28727. Up to 2002 conditions per place. [2021-12-06 21:01:31,820 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 241 selfloop transitions, 105 changer transitions 19/616 dead transitions. [2021-12-06 21:01:31,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 616 transitions, 6936 flow [2021-12-06 21:01:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:01:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:01:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2021-12-06 21:01:31,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2021-12-06 21:01:31,823 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2021-12-06 21:01:31,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2021-12-06 21:01:31,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:31,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2021-12-06 21:01:31,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:31,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:31,829 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:31,829 INFO L186 Difference]: Start difference. First operand has 567 places, 571 transitions, 5594 flow. Second operand 17 states and 4265 transitions. [2021-12-06 21:01:31,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 616 transitions, 6936 flow [2021-12-06 21:01:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 616 transitions, 6665 flow, removed 134 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:32,218 INFO L242 Difference]: Finished difference. Result has 585 places, 585 transitions, 5908 flow [2021-12-06 21:01:32,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5908, PETRI_PLACES=585, PETRI_TRANSITIONS=585} [2021-12-06 21:01:32,219 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 329 predicate places. [2021-12-06 21:01:32,219 INFO L470 AbstractCegarLoop]: Abstraction has has 585 places, 585 transitions, 5908 flow [2021-12-06 21:01:32,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:32,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:32,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:32,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:01:32,220 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1401213629, now seen corresponding path program 12 times [2021-12-06 21:01:32,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582410042] [2021-12-06 21:01:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:32,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:32,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:32,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582410042] [2021-12-06 21:01:32,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582410042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:32,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:32,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:32,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006417648] [2021-12-06 21:01:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:32,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:32,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:32,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:32,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 585 transitions, 5908 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:32,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:32,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:32,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:34,123 INFO L129 PetriNetUnfolder]: 1578/7867 cut-off events. [2021-12-06 21:01:34,124 INFO L130 PetriNetUnfolder]: For 60699/60859 co-relation queries the response was YES. [2021-12-06 21:01:34,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30554 conditions, 7867 events. 1578/7867 cut-off events. For 60699/60859 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 100709 event pairs, 614 based on Foata normal form. 11/7616 useless extension candidates. Maximal degree in co-relation 30387. Up to 2039 conditions per place. [2021-12-06 21:01:34,226 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 231 selfloop transitions, 143 changer transitions 19/644 dead transitions. [2021-12-06 21:01:34,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 644 transitions, 7502 flow [2021-12-06 21:01:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:01:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 21:01:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2021-12-06 21:01:34,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2021-12-06 21:01:34,230 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2021-12-06 21:01:34,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2021-12-06 21:01:34,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:34,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2021-12-06 21:01:34,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:34,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:34,237 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:34,237 INFO L186 Difference]: Start difference. First operand has 585 places, 585 transitions, 5908 flow. Second operand 20 states and 5008 transitions. [2021-12-06 21:01:34,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 644 transitions, 7502 flow [2021-12-06 21:01:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 644 transitions, 7338 flow, removed 55 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:34,640 INFO L242 Difference]: Finished difference. Result has 610 places, 605 transitions, 6606 flow [2021-12-06 21:01:34,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5760, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6606, PETRI_PLACES=610, PETRI_TRANSITIONS=605} [2021-12-06 21:01:34,641 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 354 predicate places. [2021-12-06 21:01:34,642 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 605 transitions, 6606 flow [2021-12-06 21:01:34,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:34,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:34,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:34,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:01:34,642 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1933410467, now seen corresponding path program 13 times [2021-12-06 21:01:34,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:34,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375700393] [2021-12-06 21:01:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:34,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:34,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:34,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375700393] [2021-12-06 21:01:34,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375700393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:34,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:34,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:34,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491409016] [2021-12-06 21:01:34,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:34,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:34,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:34,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:34,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:34,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 605 transitions, 6606 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:34,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:34,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:34,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:36,519 INFO L129 PetriNetUnfolder]: 1575/7784 cut-off events. [2021-12-06 21:01:36,519 INFO L130 PetriNetUnfolder]: For 64655/64815 co-relation queries the response was YES. [2021-12-06 21:01:36,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31003 conditions, 7784 events. 1575/7784 cut-off events. For 64655/64815 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 99073 event pairs, 614 based on Foata normal form. 11/7534 useless extension candidates. Maximal degree in co-relation 30827. Up to 2046 conditions per place. [2021-12-06 21:01:36,666 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 238 selfloop transitions, 134 changer transitions 22/645 dead transitions. [2021-12-06 21:01:36,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 645 transitions, 7839 flow [2021-12-06 21:01:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:01:36,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:01:36,669 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:01:36,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:01:36,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:36,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:01:36,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:36,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:36,675 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:36,675 INFO L186 Difference]: Start difference. First operand has 610 places, 605 transitions, 6606 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:01:36,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 645 transitions, 7839 flow [2021-12-06 21:01:37,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 645 transitions, 7609 flow, removed 88 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:37,204 INFO L242 Difference]: Finished difference. Result has 629 places, 614 transitions, 6933 flow [2021-12-06 21:01:37,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6408, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6933, PETRI_PLACES=629, PETRI_TRANSITIONS=614} [2021-12-06 21:01:37,205 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 373 predicate places. [2021-12-06 21:01:37,205 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 614 transitions, 6933 flow [2021-12-06 21:01:37,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:37,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:37,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:37,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:01:37,206 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash -371423587, now seen corresponding path program 14 times [2021-12-06 21:01:37,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:37,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318582157] [2021-12-06 21:01:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:37,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:37,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:37,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318582157] [2021-12-06 21:01:37,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318582157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:37,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:37,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:37,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130455856] [2021-12-06 21:01:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:37,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:37,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:37,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:37,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 614 transitions, 6933 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:37,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:37,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:37,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:39,134 INFO L129 PetriNetUnfolder]: 1610/7909 cut-off events. [2021-12-06 21:01:39,134 INFO L130 PetriNetUnfolder]: For 64491/64651 co-relation queries the response was YES. [2021-12-06 21:01:39,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32018 conditions, 7909 events. 1610/7909 cut-off events. For 64491/64651 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 101060 event pairs, 601 based on Foata normal form. 4/7655 useless extension candidates. Maximal degree in co-relation 31837. Up to 2020 conditions per place. [2021-12-06 21:01:39,279 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 307 selfloop transitions, 110 changer transitions 23/691 dead transitions. [2021-12-06 21:01:39,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 691 transitions, 8943 flow [2021-12-06 21:01:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:01:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 21:01:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2021-12-06 21:01:39,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2021-12-06 21:01:39,282 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2021-12-06 21:01:39,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2021-12-06 21:01:39,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:39,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2021-12-06 21:01:39,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:39,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:39,289 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:39,289 INFO L186 Difference]: Start difference. First operand has 629 places, 614 transitions, 6933 flow. Second operand 20 states and 5012 transitions. [2021-12-06 21:01:39,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 691 transitions, 8943 flow [2021-12-06 21:01:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 691 transitions, 8795 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:39,794 INFO L242 Difference]: Finished difference. Result has 657 places, 641 transitions, 7750 flow [2021-12-06 21:01:39,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7750, PETRI_PLACES=657, PETRI_TRANSITIONS=641} [2021-12-06 21:01:39,794 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 401 predicate places. [2021-12-06 21:01:39,795 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 641 transitions, 7750 flow [2021-12-06 21:01:39,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:39,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:39,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:39,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:01:39,795 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1634434539, now seen corresponding path program 15 times [2021-12-06 21:01:39,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:39,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853739561] [2021-12-06 21:01:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:39,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:39,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853739561] [2021-12-06 21:01:39,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853739561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:39,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:39,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:39,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236226808] [2021-12-06 21:01:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:39,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:39,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:39,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 641 transitions, 7750 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:39,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:39,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:39,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:41,975 INFO L129 PetriNetUnfolder]: 1646/8326 cut-off events. [2021-12-06 21:01:41,975 INFO L130 PetriNetUnfolder]: For 76832/76992 co-relation queries the response was YES. [2021-12-06 21:01:42,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34290 conditions, 8326 events. 1646/8326 cut-off events. For 76832/76992 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 108232 event pairs, 602 based on Foata normal form. 4/8079 useless extension candidates. Maximal degree in co-relation 34097. Up to 2022 conditions per place. [2021-12-06 21:01:42,107 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 270 selfloop transitions, 162 changer transitions 23/706 dead transitions. [2021-12-06 21:01:42,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 706 transitions, 9565 flow [2021-12-06 21:01:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:01:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 21:01:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2021-12-06 21:01:42,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2021-12-06 21:01:42,110 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2021-12-06 21:01:42,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2021-12-06 21:01:42,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:42,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2021-12-06 21:01:42,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:42,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:42,117 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:42,117 INFO L186 Difference]: Start difference. First operand has 657 places, 641 transitions, 7750 flow. Second operand 22 states and 5505 transitions. [2021-12-06 21:01:42,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 706 transitions, 9565 flow [2021-12-06 21:01:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 706 transitions, 9157 flow, removed 174 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:42,721 INFO L242 Difference]: Finished difference. Result has 685 places, 665 transitions, 8427 flow [2021-12-06 21:01:42,721 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8427, PETRI_PLACES=685, PETRI_TRANSITIONS=665} [2021-12-06 21:01:42,721 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 429 predicate places. [2021-12-06 21:01:42,722 INFO L470 AbstractCegarLoop]: Abstraction has has 685 places, 665 transitions, 8427 flow [2021-12-06 21:01:42,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:42,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:42,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:01:42,722 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1823746883, now seen corresponding path program 16 times [2021-12-06 21:01:42,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:42,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859195290] [2021-12-06 21:01:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:42,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:42,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859195290] [2021-12-06 21:01:42,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859195290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:42,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:42,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:42,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282528185] [2021-12-06 21:01:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:42,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:42,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:42,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:42,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 665 transitions, 8427 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:42,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:42,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:42,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:45,028 INFO L129 PetriNetUnfolder]: 1681/8660 cut-off events. [2021-12-06 21:01:45,029 INFO L130 PetriNetUnfolder]: For 80024/80184 co-relation queries the response was YES. [2021-12-06 21:01:45,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35589 conditions, 8660 events. 1681/8660 cut-off events. For 80024/80184 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 113685 event pairs, 609 based on Foata normal form. 4/8406 useless extension candidates. Maximal degree in co-relation 35386. Up to 2106 conditions per place. [2021-12-06 21:01:45,160 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 321 selfloop transitions, 131 changer transitions 16/719 dead transitions. [2021-12-06 21:01:45,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 719 transitions, 10185 flow [2021-12-06 21:01:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:01:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:01:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2021-12-06 21:01:45,162 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2021-12-06 21:01:45,163 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2021-12-06 21:01:45,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2021-12-06 21:01:45,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:45,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2021-12-06 21:01:45,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:45,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:45,168 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:45,168 INFO L186 Difference]: Start difference. First operand has 685 places, 665 transitions, 8427 flow. Second operand 17 states and 4264 transitions. [2021-12-06 21:01:45,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 719 transitions, 10185 flow [2021-12-06 21:01:45,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 719 transitions, 9971 flow, removed 104 selfloop flow, removed 4 redundant places. [2021-12-06 21:01:45,853 INFO L242 Difference]: Finished difference. Result has 704 places, 685 transitions, 9050 flow [2021-12-06 21:01:45,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8217, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9050, PETRI_PLACES=704, PETRI_TRANSITIONS=685} [2021-12-06 21:01:45,854 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 448 predicate places. [2021-12-06 21:01:45,854 INFO L470 AbstractCegarLoop]: Abstraction has has 704 places, 685 transitions, 9050 flow [2021-12-06 21:01:45,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:45,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:45,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:45,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:01:45,855 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:45,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1612718341, now seen corresponding path program 17 times [2021-12-06 21:01:45,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:45,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884825932] [2021-12-06 21:01:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:45,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:45,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:45,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884825932] [2021-12-06 21:01:45,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884825932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:45,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:45,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:45,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118552574] [2021-12-06 21:01:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:45,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:45,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 685 transitions, 9050 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:45,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:45,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:45,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:48,539 INFO L129 PetriNetUnfolder]: 1715/8923 cut-off events. [2021-12-06 21:01:48,539 INFO L130 PetriNetUnfolder]: For 84428/84588 co-relation queries the response was YES. [2021-12-06 21:01:48,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37177 conditions, 8923 events. 1715/8923 cut-off events. For 84428/84588 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 118154 event pairs, 603 based on Foata normal form. 4/8669 useless extension candidates. Maximal degree in co-relation 36968. Up to 2063 conditions per place. [2021-12-06 21:01:48,698 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 341 selfloop transitions, 134 changer transitions 21/747 dead transitions. [2021-12-06 21:01:48,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 747 transitions, 10970 flow [2021-12-06 21:01:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:01:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 21:01:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2021-12-06 21:01:48,702 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2021-12-06 21:01:48,702 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2021-12-06 21:01:48,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2021-12-06 21:01:48,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:48,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2021-12-06 21:01:48,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,712 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,712 INFO L186 Difference]: Start difference. First operand has 704 places, 685 transitions, 9050 flow. Second operand 21 states and 5258 transitions. [2021-12-06 21:01:48,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 747 transitions, 10970 flow [2021-12-06 21:01:49,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 747 transitions, 10773 flow, removed 97 selfloop flow, removed 3 redundant places. [2021-12-06 21:01:49,442 INFO L242 Difference]: Finished difference. Result has 730 places, 707 transitions, 9782 flow [2021-12-06 21:01:49,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8857, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9782, PETRI_PLACES=730, PETRI_TRANSITIONS=707} [2021-12-06 21:01:49,443 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 474 predicate places. [2021-12-06 21:01:49,443 INFO L470 AbstractCegarLoop]: Abstraction has has 730 places, 707 transitions, 9782 flow [2021-12-06 21:01:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:49,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:49,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:49,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:01:49,444 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash 244749245, now seen corresponding path program 18 times [2021-12-06 21:01:49,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:49,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600561921] [2021-12-06 21:01:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:49,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:49,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600561921] [2021-12-06 21:01:49,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600561921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:49,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:49,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:49,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292135492] [2021-12-06 21:01:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:49,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:49,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:49,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:49,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 707 transitions, 9782 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:49,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:49,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:49,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:52,176 INFO L129 PetriNetUnfolder]: 1718/9061 cut-off events. [2021-12-06 21:01:52,176 INFO L130 PetriNetUnfolder]: For 88072/88232 co-relation queries the response was YES. [2021-12-06 21:01:52,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37998 conditions, 9061 events. 1718/9061 cut-off events. For 88072/88232 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 120556 event pairs, 610 based on Foata normal form. 4/8815 useless extension candidates. Maximal degree in co-relation 37780. Up to 2176 conditions per place. [2021-12-06 21:01:52,333 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 298 selfloop transitions, 181 changer transitions 22/752 dead transitions. [2021-12-06 21:01:52,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 752 transitions, 11237 flow [2021-12-06 21:01:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:01:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 21:01:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2021-12-06 21:01:52,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2021-12-06 21:01:52,336 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2021-12-06 21:01:52,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2021-12-06 21:01:52,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:52,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2021-12-06 21:01:52,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:52,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:52,341 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:52,341 INFO L186 Difference]: Start difference. First operand has 730 places, 707 transitions, 9782 flow. Second operand 16 states and 4017 transitions. [2021-12-06 21:01:52,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 752 transitions, 11237 flow [2021-12-06 21:01:53,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 752 transitions, 11004 flow, removed 107 selfloop flow, removed 4 redundant places. [2021-12-06 21:01:53,065 INFO L242 Difference]: Finished difference. Result has 746 places, 715 transitions, 10163 flow [2021-12-06 21:01:53,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9562, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10163, PETRI_PLACES=746, PETRI_TRANSITIONS=715} [2021-12-06 21:01:53,066 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 490 predicate places. [2021-12-06 21:01:53,066 INFO L470 AbstractCegarLoop]: Abstraction has has 746 places, 715 transitions, 10163 flow [2021-12-06 21:01:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:53,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:53,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:53,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:01:53,067 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1572504923, now seen corresponding path program 19 times [2021-12-06 21:01:53,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:53,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112704822] [2021-12-06 21:01:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:53,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:53,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:53,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112704822] [2021-12-06 21:01:53,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112704822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:53,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:53,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:53,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314831359] [2021-12-06 21:01:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:53,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:53,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:53,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:53,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 715 transitions, 10163 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:53,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:53,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:53,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:55,770 INFO L129 PetriNetUnfolder]: 1723/9109 cut-off events. [2021-12-06 21:01:55,770 INFO L130 PetriNetUnfolder]: For 86759/86919 co-relation queries the response was YES. [2021-12-06 21:01:55,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38646 conditions, 9109 events. 1723/9109 cut-off events. For 86759/86919 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 121391 event pairs, 618 based on Foata normal form. 4/8854 useless extension candidates. Maximal degree in co-relation 38424. Up to 2183 conditions per place. [2021-12-06 21:01:55,946 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 352 selfloop transitions, 135 changer transitions 21/759 dead transitions. [2021-12-06 21:01:55,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 759 transitions, 11710 flow [2021-12-06 21:01:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2021-12-06 21:01:55,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2021-12-06 21:01:55,948 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2021-12-06 21:01:55,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2021-12-06 21:01:55,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:55,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2021-12-06 21:01:55,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:55,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:55,954 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:55,954 INFO L186 Difference]: Start difference. First operand has 746 places, 715 transitions, 10163 flow. Second operand 18 states and 4514 transitions. [2021-12-06 21:01:55,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 759 transitions, 11710 flow [2021-12-06 21:01:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 759 transitions, 11362 flow, removed 59 selfloop flow, removed 5 redundant places. [2021-12-06 21:01:56,664 INFO L242 Difference]: Finished difference. Result has 763 places, 727 transitions, 10454 flow [2021-12-06 21:01:56,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9833, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10454, PETRI_PLACES=763, PETRI_TRANSITIONS=727} [2021-12-06 21:01:56,665 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 507 predicate places. [2021-12-06 21:01:56,665 INFO L470 AbstractCegarLoop]: Abstraction has has 763 places, 727 transitions, 10454 flow [2021-12-06 21:01:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:56,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:56,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:56,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 21:01:56,666 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:01:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash -993370193, now seen corresponding path program 20 times [2021-12-06 21:01:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604749766] [2021-12-06 21:01:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:56,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:56,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604749766] [2021-12-06 21:01:56,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604749766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:56,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:56,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:01:56,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545455971] [2021-12-06 21:01:56,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:56,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:56,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:56,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:01:56,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 727 transitions, 10454 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:56,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:56,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:01:56,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:59,592 INFO L129 PetriNetUnfolder]: 1723/9092 cut-off events. [2021-12-06 21:01:59,592 INFO L130 PetriNetUnfolder]: For 86517/86677 co-relation queries the response was YES. [2021-12-06 21:01:59,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38495 conditions, 9092 events. 1723/9092 cut-off events. For 86517/86677 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 120944 event pairs, 614 based on Foata normal form. 4/8843 useless extension candidates. Maximal degree in co-relation 38273. Up to 2193 conditions per place. [2021-12-06 21:01:59,772 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 339 selfloop transitions, 152 changer transitions 28/769 dead transitions. [2021-12-06 21:01:59,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 769 transitions, 11926 flow [2021-12-06 21:01:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:01:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:01:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2021-12-06 21:01:59,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2021-12-06 21:01:59,775 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2021-12-06 21:01:59,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2021-12-06 21:01:59,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:59,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2021-12-06 21:01:59,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:59,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:59,783 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:59,783 INFO L186 Difference]: Start difference. First operand has 763 places, 727 transitions, 10454 flow. Second operand 18 states and 4514 transitions. [2021-12-06 21:01:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 769 transitions, 11926 flow [2021-12-06 21:02:00,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 776 places, 769 transitions, 11812 flow, removed 57 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:00,533 INFO L242 Difference]: Finished difference. Result has 783 places, 735 transitions, 10935 flow [2021-12-06 21:02:00,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10935, PETRI_PLACES=783, PETRI_TRANSITIONS=735} [2021-12-06 21:02:00,534 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 527 predicate places. [2021-12-06 21:02:00,534 INFO L470 AbstractCegarLoop]: Abstraction has has 783 places, 735 transitions, 10935 flow [2021-12-06 21:02:00,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:00,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:00,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:00,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 21:02:00,535 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1797839325, now seen corresponding path program 1 times [2021-12-06 21:02:00,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:00,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794631521] [2021-12-06 21:02:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:00,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:00,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794631521] [2021-12-06 21:02:00,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794631521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:00,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:00,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:02:00,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438248116] [2021-12-06 21:02:00,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:00,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:02:00,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:00,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:02:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:00,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2021-12-06 21:02:00,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 735 transitions, 10935 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:00,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:00,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2021-12-06 21:02:00,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:02,037 INFO L129 PetriNetUnfolder]: 659/6002 cut-off events. [2021-12-06 21:02:02,037 INFO L130 PetriNetUnfolder]: For 53722/54429 co-relation queries the response was YES. [2021-12-06 21:02:02,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23035 conditions, 6002 events. 659/6002 cut-off events. For 53722/54429 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 77484 event pairs, 35 based on Foata normal form. 25/5848 useless extension candidates. Maximal degree in co-relation 22817. Up to 312 conditions per place. [2021-12-06 21:02:02,151 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 0 changer transitions 25/755 dead transitions. [2021-12-06 21:02:02,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 755 transitions, 11076 flow [2021-12-06 21:02:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:02:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:02:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2021-12-06 21:02:02,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2021-12-06 21:02:02,152 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2021-12-06 21:02:02,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2021-12-06 21:02:02,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:02,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2021-12-06 21:02:02,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:02,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:02,156 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:02,156 INFO L186 Difference]: Start difference. First operand has 783 places, 735 transitions, 10935 flow. Second operand 9 states and 2320 transitions. [2021-12-06 21:02:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 755 transitions, 11076 flow [2021-12-06 21:02:02,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 755 transitions, 10877 flow, removed 62 selfloop flow, removed 4 redundant places. [2021-12-06 21:02:02,656 INFO L242 Difference]: Finished difference. Result has 791 places, 730 transitions, 10729 flow [2021-12-06 21:02:02,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10736, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10729, PETRI_PLACES=791, PETRI_TRANSITIONS=730} [2021-12-06 21:02:02,657 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 535 predicate places. [2021-12-06 21:02:02,657 INFO L470 AbstractCegarLoop]: Abstraction has has 791 places, 730 transitions, 10729 flow [2021-12-06 21:02:02,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:02,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:02,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:02,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 21:02:02,658 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash 356499216, now seen corresponding path program 1 times [2021-12-06 21:02:02,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523485770] [2021-12-06 21:02:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:02,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:02,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523485770] [2021-12-06 21:02:02,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523485770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:02,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:02,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:02:02,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166394477] [2021-12-06 21:02:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:02,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:02:02,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:02:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:02:02,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 286 [2021-12-06 21:02:02,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 730 transitions, 10729 flow. Second operand has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:02,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:02,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 286 [2021-12-06 21:02:02,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:03,799 INFO L129 PetriNetUnfolder]: 479/4086 cut-off events. [2021-12-06 21:02:03,799 INFO L130 PetriNetUnfolder]: For 35786/36082 co-relation queries the response was YES. [2021-12-06 21:02:03,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15554 conditions, 4086 events. 479/4086 cut-off events. For 35786/36082 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 49058 event pairs, 35 based on Foata normal form. 10/3954 useless extension candidates. Maximal degree in co-relation 15343. Up to 222 conditions per place. [2021-12-06 21:02:03,879 INFO L132 encePairwiseOnDemand]: 274/286 looper letters, 27 selfloop transitions, 1 changer transitions 32/762 dead transitions. [2021-12-06 21:02:03,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 762 transitions, 10946 flow [2021-12-06 21:02:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:02:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:02:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3271 transitions. [2021-12-06 21:02:03,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8797740720817644 [2021-12-06 21:02:03,881 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3271 transitions. [2021-12-06 21:02:03,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3271 transitions. [2021-12-06 21:02:03,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:03,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3271 transitions. [2021-12-06 21:02:03,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 251.6153846153846) internal successors, (3271), 13 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:03,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:03,885 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:03,885 INFO L186 Difference]: Start difference. First operand has 791 places, 730 transitions, 10729 flow. Second operand 13 states and 3271 transitions. [2021-12-06 21:02:03,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 762 transitions, 10946 flow [2021-12-06 21:02:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 762 transitions, 10830 flow, removed 31 selfloop flow, removed 26 redundant places. [2021-12-06 21:02:04,251 INFO L242 Difference]: Finished difference. Result has 779 places, 730 transitions, 10646 flow [2021-12-06 21:02:04,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10621, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10646, PETRI_PLACES=779, PETRI_TRANSITIONS=730} [2021-12-06 21:02:04,252 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 523 predicate places. [2021-12-06 21:02:04,252 INFO L470 AbstractCegarLoop]: Abstraction has has 779 places, 730 transitions, 10646 flow [2021-12-06 21:02:04,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:04,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:04,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:04,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 21:02:04,253 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:04,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1720911886, now seen corresponding path program 1 times [2021-12-06 21:02:04,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114345603] [2021-12-06 21:02:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:04,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:04,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114345603] [2021-12-06 21:02:04,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114345603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:04,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:04,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:04,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383755957] [2021-12-06 21:02:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:04,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:04,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:04,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:04,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:04,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 779 places, 730 transitions, 10646 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:04,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:04,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:04,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:06,465 INFO L129 PetriNetUnfolder]: 1174/6241 cut-off events. [2021-12-06 21:02:06,466 INFO L130 PetriNetUnfolder]: For 52447/52578 co-relation queries the response was YES. [2021-12-06 21:02:06,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24305 conditions, 6241 events. 1174/6241 cut-off events. For 52447/52578 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 77746 event pairs, 412 based on Foata normal form. 18/6090 useless extension candidates. Maximal degree in co-relation 24108. Up to 1878 conditions per place. [2021-12-06 21:02:06,606 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 375 selfloop transitions, 30 changer transitions 28/844 dead transitions. [2021-12-06 21:02:06,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 844 transitions, 12137 flow [2021-12-06 21:02:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 21:02:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 21:02:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2021-12-06 21:02:06,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2021-12-06 21:02:06,611 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2021-12-06 21:02:06,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2021-12-06 21:02:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2021-12-06 21:02:06,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:06,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:06,622 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:06,622 INFO L186 Difference]: Start difference. First operand has 779 places, 730 transitions, 10646 flow. Second operand 24 states and 6015 transitions. [2021-12-06 21:02:06,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 844 transitions, 12137 flow [2021-12-06 21:02:07,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 844 transitions, 12104 flow, removed 16 selfloop flow, removed 11 redundant places. [2021-12-06 21:02:07,152 INFO L242 Difference]: Finished difference. Result has 801 places, 759 transitions, 10978 flow [2021-12-06 21:02:07,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10625, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10978, PETRI_PLACES=801, PETRI_TRANSITIONS=759} [2021-12-06 21:02:07,153 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 545 predicate places. [2021-12-06 21:02:07,153 INFO L470 AbstractCegarLoop]: Abstraction has has 801 places, 759 transitions, 10978 flow [2021-12-06 21:02:07,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:07,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:07,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 21:02:07,154 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1613400096, now seen corresponding path program 2 times [2021-12-06 21:02:07,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:07,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472885167] [2021-12-06 21:02:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:07,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:07,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:07,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472885167] [2021-12-06 21:02:07,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472885167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:07,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:07,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:07,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086257366] [2021-12-06 21:02:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:07,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:07,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:07,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:07,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 759 transitions, 10978 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:07,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:07,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:07,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:09,215 INFO L129 PetriNetUnfolder]: 1290/6605 cut-off events. [2021-12-06 21:02:09,215 INFO L130 PetriNetUnfolder]: For 62874/63000 co-relation queries the response was YES. [2021-12-06 21:02:09,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 6605 events. 1290/6605 cut-off events. For 62874/63000 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 82883 event pairs, 458 based on Foata normal form. 13/6428 useless extension candidates. Maximal degree in co-relation 28350. Up to 2050 conditions per place. [2021-12-06 21:02:09,366 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 359 selfloop transitions, 45 changer transitions 19/834 dead transitions. [2021-12-06 21:02:09,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 834 transitions, 12429 flow [2021-12-06 21:02:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:02:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 21:02:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2021-12-06 21:02:09,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2021-12-06 21:02:09,370 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2021-12-06 21:02:09,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2021-12-06 21:02:09,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:09,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2021-12-06 21:02:09,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:09,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:09,379 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:09,379 INFO L186 Difference]: Start difference. First operand has 801 places, 759 transitions, 10978 flow. Second operand 20 states and 5008 transitions. [2021-12-06 21:02:09,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 834 transitions, 12429 flow [2021-12-06 21:02:10,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 834 transitions, 12203 flow, removed 113 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:10,084 INFO L242 Difference]: Finished difference. Result has 831 places, 791 transitions, 11331 flow [2021-12-06 21:02:10,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10850, PETRI_DIFFERENCE_MINUEND_PLACES=797, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11331, PETRI_PLACES=831, PETRI_TRANSITIONS=791} [2021-12-06 21:02:10,085 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 575 predicate places. [2021-12-06 21:02:10,086 INFO L470 AbstractCegarLoop]: Abstraction has has 831 places, 791 transitions, 11331 flow [2021-12-06 21:02:10,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:10,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:10,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:10,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 21:02:10,086 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash 204801746, now seen corresponding path program 3 times [2021-12-06 21:02:10,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957562680] [2021-12-06 21:02:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:10,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:10,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:10,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957562680] [2021-12-06 21:02:10,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957562680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:10,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955874290] [2021-12-06 21:02:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:10,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:10,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:10,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:10,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 791 transitions, 11331 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:10,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:10,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:10,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:12,268 INFO L129 PetriNetUnfolder]: 1336/6926 cut-off events. [2021-12-06 21:02:12,268 INFO L130 PetriNetUnfolder]: For 69488/69631 co-relation queries the response was YES. [2021-12-06 21:02:12,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30714 conditions, 6926 events. 1336/6926 cut-off events. For 69488/69631 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 87563 event pairs, 516 based on Foata normal form. 21/6755 useless extension candidates. Maximal degree in co-relation 30493. Up to 2098 conditions per place. [2021-12-06 21:02:12,435 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 401 selfloop transitions, 42 changer transitions 22/876 dead transitions. [2021-12-06 21:02:12,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 876 transitions, 13150 flow [2021-12-06 21:02:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:02:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 21:02:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2021-12-06 21:02:12,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2021-12-06 21:02:12,437 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2021-12-06 21:02:12,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2021-12-06 21:02:12,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:12,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2021-12-06 21:02:12,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:12,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:12,443 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:12,444 INFO L186 Difference]: Start difference. First operand has 831 places, 791 transitions, 11331 flow. Second operand 20 states and 5012 transitions. [2021-12-06 21:02:12,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 848 places, 876 transitions, 13150 flow [2021-12-06 21:02:13,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 876 transitions, 12860 flow, removed 145 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:13,172 INFO L242 Difference]: Finished difference. Result has 861 places, 823 transitions, 11712 flow [2021-12-06 21:02:13,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=11193, PETRI_DIFFERENCE_MINUEND_PLACES=827, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11712, PETRI_PLACES=861, PETRI_TRANSITIONS=823} [2021-12-06 21:02:13,173 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 605 predicate places. [2021-12-06 21:02:13,173 INFO L470 AbstractCegarLoop]: Abstraction has has 861 places, 823 transitions, 11712 flow [2021-12-06 21:02:13,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:13,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:13,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:13,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 21:02:13,174 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1676019516, now seen corresponding path program 4 times [2021-12-06 21:02:13,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:13,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118377261] [2021-12-06 21:02:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:13,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:13,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:13,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118377261] [2021-12-06 21:02:13,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118377261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:13,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:13,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:13,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767398030] [2021-12-06 21:02:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:13,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:13,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:13,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:13,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 823 transitions, 11712 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:13,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:13,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:13,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:15,498 INFO L129 PetriNetUnfolder]: 1381/7212 cut-off events. [2021-12-06 21:02:15,498 INFO L130 PetriNetUnfolder]: For 69132/69276 co-relation queries the response was YES. [2021-12-06 21:02:15,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31405 conditions, 7212 events. 1381/7212 cut-off events. For 69132/69276 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 92486 event pairs, 443 based on Foata normal form. 13/7039 useless extension candidates. Maximal degree in co-relation 31170. Up to 1903 conditions per place. [2021-12-06 21:02:15,671 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 423 selfloop transitions, 81 changer transitions 26/941 dead transitions. [2021-12-06 21:02:15,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 941 transitions, 13831 flow [2021-12-06 21:02:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 21:02:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 21:02:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2021-12-06 21:02:15,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2021-12-06 21:02:15,674 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2021-12-06 21:02:15,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2021-12-06 21:02:15,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:15,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2021-12-06 21:02:15,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:15,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:15,682 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:15,682 INFO L186 Difference]: Start difference. First operand has 861 places, 823 transitions, 11712 flow. Second operand 24 states and 6012 transitions. [2021-12-06 21:02:15,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 941 transitions, 13831 flow [2021-12-06 21:02:16,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 941 transitions, 13519 flow, removed 156 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:16,411 INFO L242 Difference]: Finished difference. Result has 900 places, 851 transitions, 12215 flow [2021-12-06 21:02:16,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=11532, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=12215, PETRI_PLACES=900, PETRI_TRANSITIONS=851} [2021-12-06 21:02:16,412 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 644 predicate places. [2021-12-06 21:02:16,412 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 851 transitions, 12215 flow [2021-12-06 21:02:16,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:16,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:16,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:16,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 21:02:16,413 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash -231405122, now seen corresponding path program 5 times [2021-12-06 21:02:16,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:16,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089604382] [2021-12-06 21:02:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:16,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:16,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089604382] [2021-12-06 21:02:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089604382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:16,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:16,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:16,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709932522] [2021-12-06 21:02:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:16,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:16,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:16,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:16,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 851 transitions, 12215 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:16,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:16,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:16,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:19,040 INFO L129 PetriNetUnfolder]: 1481/7642 cut-off events. [2021-12-06 21:02:19,041 INFO L130 PetriNetUnfolder]: For 75910/76068 co-relation queries the response was YES. [2021-12-06 21:02:19,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33967 conditions, 7642 events. 1481/7642 cut-off events. For 75910/76068 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 99210 event pairs, 481 based on Foata normal form. 36/7493 useless extension candidates. Maximal degree in co-relation 33713. Up to 2193 conditions per place. [2021-12-06 21:02:19,246 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 419 selfloop transitions, 86 changer transitions 24/940 dead transitions. [2021-12-06 21:02:19,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 940 transitions, 14223 flow [2021-12-06 21:02:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:02:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 21:02:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2021-12-06 21:02:19,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2021-12-06 21:02:19,249 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2021-12-06 21:02:19,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2021-12-06 21:02:19,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:19,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2021-12-06 21:02:19,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:19,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:19,256 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:19,256 INFO L186 Difference]: Start difference. First operand has 900 places, 851 transitions, 12215 flow. Second operand 22 states and 5507 transitions. [2021-12-06 21:02:19,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 940 transitions, 14223 flow [2021-12-06 21:02:20,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 940 transitions, 13999 flow, removed 112 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:20,138 INFO L242 Difference]: Finished difference. Result has 931 places, 883 transitions, 12803 flow [2021-12-06 21:02:20,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12803, PETRI_PLACES=931, PETRI_TRANSITIONS=883} [2021-12-06 21:02:20,139 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 675 predicate places. [2021-12-06 21:02:20,139 INFO L470 AbstractCegarLoop]: Abstraction has has 931 places, 883 transitions, 12803 flow [2021-12-06 21:02:20,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:20,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:20,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:20,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 21:02:20,140 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 946547592, now seen corresponding path program 6 times [2021-12-06 21:02:20,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235372820] [2021-12-06 21:02:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:20,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:20,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:20,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235372820] [2021-12-06 21:02:20,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235372820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:20,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:20,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:20,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219906756] [2021-12-06 21:02:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:20,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:20,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:20,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:20,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 883 transitions, 12803 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:20,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:20,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:20,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:22,958 INFO L129 PetriNetUnfolder]: 1538/7928 cut-off events. [2021-12-06 21:02:22,959 INFO L130 PetriNetUnfolder]: For 74116/74275 co-relation queries the response was YES. [2021-12-06 21:02:23,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35414 conditions, 7928 events. 1538/7928 cut-off events. For 74116/74275 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 103566 event pairs, 508 based on Foata normal form. 28/7762 useless extension candidates. Maximal degree in co-relation 35147. Up to 2275 conditions per place. [2021-12-06 21:02:23,200 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 428 selfloop transitions, 89 changer transitions 16/944 dead transitions. [2021-12-06 21:02:23,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 944 transitions, 14547 flow [2021-12-06 21:02:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:02:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:02:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2021-12-06 21:02:23,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2021-12-06 21:02:23,202 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2021-12-06 21:02:23,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2021-12-06 21:02:23,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:23,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2021-12-06 21:02:23,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:23,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:23,207 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:23,207 INFO L186 Difference]: Start difference. First operand has 931 places, 883 transitions, 12803 flow. Second operand 17 states and 4265 transitions. [2021-12-06 21:02:23,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 944 transitions, 14547 flow [2021-12-06 21:02:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 944 transitions, 14379 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:24,103 INFO L242 Difference]: Finished difference. Result has 952 places, 904 transitions, 13261 flow [2021-12-06 21:02:24,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12663, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13261, PETRI_PLACES=952, PETRI_TRANSITIONS=904} [2021-12-06 21:02:24,104 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 696 predicate places. [2021-12-06 21:02:24,104 INFO L470 AbstractCegarLoop]: Abstraction has has 952 places, 904 transitions, 13261 flow [2021-12-06 21:02:24,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:24,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:24,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:24,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 21:02:24,105 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash 425111128, now seen corresponding path program 7 times [2021-12-06 21:02:24,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244536386] [2021-12-06 21:02:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:24,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:24,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:24,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244536386] [2021-12-06 21:02:24,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244536386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:24,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:24,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:24,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85151460] [2021-12-06 21:02:24,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:24,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:24,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:24,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:24,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 904 transitions, 13261 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:24,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:24,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:24,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:27,023 INFO L129 PetriNetUnfolder]: 1565/8073 cut-off events. [2021-12-06 21:02:27,023 INFO L130 PetriNetUnfolder]: For 77985/78148 co-relation queries the response was YES. [2021-12-06 21:02:27,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36588 conditions, 8073 events. 1565/8073 cut-off events. For 77985/78148 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 106323 event pairs, 521 based on Foata normal form. 32/7920 useless extension candidates. Maximal degree in co-relation 36313. Up to 2331 conditions per place. [2021-12-06 21:02:27,273 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 436 selfloop transitions, 104 changer transitions 14/965 dead transitions. [2021-12-06 21:02:27,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 965 places, 965 transitions, 15016 flow [2021-12-06 21:02:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:02:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 21:02:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2021-12-06 21:02:27,276 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2021-12-06 21:02:27,276 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2021-12-06 21:02:27,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2021-12-06 21:02:27,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:27,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2021-12-06 21:02:27,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:27,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:27,280 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:27,280 INFO L186 Difference]: Start difference. First operand has 952 places, 904 transitions, 13261 flow. Second operand 16 states and 4014 transitions. [2021-12-06 21:02:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 965 places, 965 transitions, 15016 flow [2021-12-06 21:02:28,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 963 places, 965 transitions, 14886 flow, removed 65 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:28,108 INFO L242 Difference]: Finished difference. Result has 972 places, 922 transitions, 13689 flow [2021-12-06 21:02:28,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13135, PETRI_DIFFERENCE_MINUEND_PLACES=948, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13689, PETRI_PLACES=972, PETRI_TRANSITIONS=922} [2021-12-06 21:02:28,109 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 716 predicate places. [2021-12-06 21:02:28,110 INFO L470 AbstractCegarLoop]: Abstraction has has 972 places, 922 transitions, 13689 flow [2021-12-06 21:02:28,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:28,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:28,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:28,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 21:02:28,110 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1029021466, now seen corresponding path program 8 times [2021-12-06 21:02:28,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:28,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599127934] [2021-12-06 21:02:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:28,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:28,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:28,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599127934] [2021-12-06 21:02:28,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599127934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:28,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:28,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:28,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755994322] [2021-12-06 21:02:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:28,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:28,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:28,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:28,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 922 transitions, 13689 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:28,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:28,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:28,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:31,246 INFO L129 PetriNetUnfolder]: 1600/8473 cut-off events. [2021-12-06 21:02:31,246 INFO L130 PetriNetUnfolder]: For 83808/83975 co-relation queries the response was YES. [2021-12-06 21:02:31,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38361 conditions, 8473 events. 1600/8473 cut-off events. For 83808/83975 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 113034 event pairs, 533 based on Foata normal form. 15/8299 useless extension candidates. Maximal degree in co-relation 38078. Up to 2269 conditions per place. [2021-12-06 21:02:31,477 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 460 selfloop transitions, 98 changer transitions 23/992 dead transitions. [2021-12-06 21:02:31,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 992 transitions, 15742 flow [2021-12-06 21:02:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:02:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 21:02:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2021-12-06 21:02:31,479 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2021-12-06 21:02:31,479 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2021-12-06 21:02:31,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2021-12-06 21:02:31,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:31,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2021-12-06 21:02:31,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:31,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:31,485 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:31,485 INFO L186 Difference]: Start difference. First operand has 972 places, 922 transitions, 13689 flow. Second operand 21 states and 5261 transitions. [2021-12-06 21:02:31,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 992 transitions, 15742 flow [2021-12-06 21:02:32,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 987 places, 992 transitions, 15598 flow, removed 50 selfloop flow, removed 3 redundant places. [2021-12-06 21:02:32,353 INFO L242 Difference]: Finished difference. Result has 1001 places, 946 transitions, 14381 flow [2021-12-06 21:02:32,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13583, PETRI_DIFFERENCE_MINUEND_PLACES=967, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14381, PETRI_PLACES=1001, PETRI_TRANSITIONS=946} [2021-12-06 21:02:32,354 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 745 predicate places. [2021-12-06 21:02:32,354 INFO L470 AbstractCegarLoop]: Abstraction has has 1001 places, 946 transitions, 14381 flow [2021-12-06 21:02:32,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:32,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:32,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:32,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 21:02:32,354 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 215260482, now seen corresponding path program 9 times [2021-12-06 21:02:32,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702407115] [2021-12-06 21:02:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:32,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:32,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:32,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702407115] [2021-12-06 21:02:32,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702407115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:32,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:32,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:32,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164585332] [2021-12-06 21:02:32,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:32,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:32,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:32,416 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:32,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 946 transitions, 14381 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:32,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:32,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:32,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:35,735 INFO L129 PetriNetUnfolder]: 1600/8552 cut-off events. [2021-12-06 21:02:35,736 INFO L130 PetriNetUnfolder]: For 89441/89644 co-relation queries the response was YES. [2021-12-06 21:02:35,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39130 conditions, 8552 events. 1600/8552 cut-off events. For 89441/89644 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 114240 event pairs, 508 based on Foata normal form. 39/8405 useless extension candidates. Maximal degree in co-relation 38835. Up to 2369 conditions per place. [2021-12-06 21:02:35,927 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 449 selfloop transitions, 117 changer transitions 23/1000 dead transitions. [2021-12-06 21:02:35,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 1000 transitions, 16143 flow [2021-12-06 21:02:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:02:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:02:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:02:35,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:02:35,929 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:02:35,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:02:35,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:35,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:02:35,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:35,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:35,934 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:35,934 INFO L186 Difference]: Start difference. First operand has 1001 places, 946 transitions, 14381 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:02:35,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 1000 transitions, 16143 flow [2021-12-06 21:02:36,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1014 places, 1000 transitions, 15939 flow, removed 102 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:36,849 INFO L242 Difference]: Finished difference. Result has 1022 places, 956 transitions, 14694 flow [2021-12-06 21:02:36,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=14191, PETRI_DIFFERENCE_MINUEND_PLACES=997, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14694, PETRI_PLACES=1022, PETRI_TRANSITIONS=956} [2021-12-06 21:02:36,850 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 766 predicate places. [2021-12-06 21:02:36,850 INFO L470 AbstractCegarLoop]: Abstraction has has 1022 places, 956 transitions, 14694 flow [2021-12-06 21:02:36,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:36,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:36,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 21:02:36,851 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -423495574, now seen corresponding path program 10 times [2021-12-06 21:02:36,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713172217] [2021-12-06 21:02:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:36,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:36,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:36,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713172217] [2021-12-06 21:02:36,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713172217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:36,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:36,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:36,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728163581] [2021-12-06 21:02:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:36,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:36,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:36,917 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:36,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1022 places, 956 transitions, 14694 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:36,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:36,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:36,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:40,311 INFO L129 PetriNetUnfolder]: 1633/8830 cut-off events. [2021-12-06 21:02:40,311 INFO L130 PetriNetUnfolder]: For 92355/92543 co-relation queries the response was YES. [2021-12-06 21:02:40,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40511 conditions, 8830 events. 1633/8830 cut-off events. For 92355/92543 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 119087 event pairs, 537 based on Foata normal form. 15/8653 useless extension candidates. Maximal degree in co-relation 40209. Up to 2419 conditions per place. [2021-12-06 21:02:40,694 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 477 selfloop transitions, 107 changer transitions 15/1010 dead transitions. [2021-12-06 21:02:40,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1036 places, 1010 transitions, 16599 flow [2021-12-06 21:02:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:02:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:02:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2021-12-06 21:02:40,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2021-12-06 21:02:40,697 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2021-12-06 21:02:40,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2021-12-06 21:02:40,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:40,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2021-12-06 21:02:40,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:40,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:40,702 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:40,702 INFO L186 Difference]: Start difference. First operand has 1022 places, 956 transitions, 14694 flow. Second operand 17 states and 4265 transitions. [2021-12-06 21:02:40,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1036 places, 1010 transitions, 16599 flow [2021-12-06 21:02:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1032 places, 1010 transitions, 16415 flow, removed 48 selfloop flow, removed 4 redundant places. [2021-12-06 21:02:41,734 INFO L242 Difference]: Finished difference. Result has 1041 places, 977 transitions, 15244 flow [2021-12-06 21:02:41,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=14526, PETRI_DIFFERENCE_MINUEND_PLACES=1016, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15244, PETRI_PLACES=1041, PETRI_TRANSITIONS=977} [2021-12-06 21:02:41,735 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 785 predicate places. [2021-12-06 21:02:41,735 INFO L470 AbstractCegarLoop]: Abstraction has has 1041 places, 977 transitions, 15244 flow [2021-12-06 21:02:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:41,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:41,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:41,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 21:02:41,736 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1996532382, now seen corresponding path program 11 times [2021-12-06 21:02:41,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:41,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869484389] [2021-12-06 21:02:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:41,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:41,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:41,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869484389] [2021-12-06 21:02:41,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869484389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:41,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:41,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:41,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647871729] [2021-12-06 21:02:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:41,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:41,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:41,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:41,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1041 places, 977 transitions, 15244 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:41,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:41,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:41,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:45,157 INFO L129 PetriNetUnfolder]: 1636/8777 cut-off events. [2021-12-06 21:02:45,157 INFO L130 PetriNetUnfolder]: For 92457/92634 co-relation queries the response was YES. [2021-12-06 21:02:45,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41035 conditions, 8777 events. 1636/8777 cut-off events. For 92457/92634 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 118177 event pairs, 517 based on Foata normal form. 28/8602 useless extension candidates. Maximal degree in co-relation 40725. Up to 2441 conditions per place. [2021-12-06 21:02:45,455 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 462 selfloop transitions, 127 changer transitions 20/1020 dead transitions. [2021-12-06 21:02:45,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1056 places, 1020 transitions, 16913 flow [2021-12-06 21:02:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:02:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:02:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:02:45,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:02:45,458 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:02:45,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:02:45,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:45,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:02:45,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:45,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:45,463 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:45,463 INFO L186 Difference]: Start difference. First operand has 1041 places, 977 transitions, 15244 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:02:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1056 places, 1020 transitions, 16913 flow [2021-12-06 21:02:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1053 places, 1020 transitions, 16729 flow, removed 67 selfloop flow, removed 3 redundant places. [2021-12-06 21:02:46,532 INFO L242 Difference]: Finished difference. Result has 1060 places, 989 transitions, 15624 flow [2021-12-06 21:02:46,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15066, PETRI_DIFFERENCE_MINUEND_PLACES=1036, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15624, PETRI_PLACES=1060, PETRI_TRANSITIONS=989} [2021-12-06 21:02:46,533 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 804 predicate places. [2021-12-06 21:02:46,534 INFO L470 AbstractCegarLoop]: Abstraction has has 1060 places, 989 transitions, 15624 flow [2021-12-06 21:02:46,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:46,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:46,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:46,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 21:02:46,534 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:46,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1398421174, now seen corresponding path program 12 times [2021-12-06 21:02:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128930811] [2021-12-06 21:02:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:46,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:46,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:46,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128930811] [2021-12-06 21:02:46,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128930811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:46,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:46,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:46,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954362036] [2021-12-06 21:02:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:46,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:46,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:46,603 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:46,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1060 places, 989 transitions, 15624 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:46,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:46,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:46,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:50,148 INFO L129 PetriNetUnfolder]: 1635/9079 cut-off events. [2021-12-06 21:02:50,148 INFO L130 PetriNetUnfolder]: For 96515/96709 co-relation queries the response was YES. [2021-12-06 21:02:50,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41507 conditions, 9079 events. 1635/9079 cut-off events. For 96515/96709 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 123711 event pairs, 532 based on Foata normal form. 15/8904 useless extension candidates. Maximal degree in co-relation 41192. Up to 2431 conditions per place. [2021-12-06 21:02:50,394 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 480 selfloop transitions, 116 changer transitions 24/1031 dead transitions. [2021-12-06 21:02:50,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 1031 transitions, 17288 flow [2021-12-06 21:02:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:02:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:02:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2021-12-06 21:02:50,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2021-12-06 21:02:50,397 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2021-12-06 21:02:50,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2021-12-06 21:02:50,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:50,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2021-12-06 21:02:50,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:50,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:50,402 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:50,403 INFO L186 Difference]: Start difference. First operand has 1060 places, 989 transitions, 15624 flow. Second operand 18 states and 4515 transitions. [2021-12-06 21:02:50,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1075 places, 1031 transitions, 17288 flow [2021-12-06 21:02:51,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1071 places, 1031 transitions, 17145 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-12-06 21:02:51,438 INFO L242 Difference]: Finished difference. Result has 1078 places, 998 transitions, 15992 flow [2021-12-06 21:02:51,439 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15487, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15992, PETRI_PLACES=1078, PETRI_TRANSITIONS=998} [2021-12-06 21:02:51,439 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 822 predicate places. [2021-12-06 21:02:51,439 INFO L470 AbstractCegarLoop]: Abstraction has has 1078 places, 998 transitions, 15992 flow [2021-12-06 21:02:51,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:51,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:51,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:51,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 21:02:51,440 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash 436524064, now seen corresponding path program 13 times [2021-12-06 21:02:51,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674025493] [2021-12-06 21:02:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:51,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:51,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:51,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674025493] [2021-12-06 21:02:51,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674025493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:51,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:51,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:51,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066846685] [2021-12-06 21:02:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:51,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:51,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:51,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:51,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1078 places, 998 transitions, 15992 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:51,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:51,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:51,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:55,440 INFO L129 PetriNetUnfolder]: 1734/9491 cut-off events. [2021-12-06 21:02:55,440 INFO L130 PetriNetUnfolder]: For 107430/107609 co-relation queries the response was YES. [2021-12-06 21:02:55,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44070 conditions, 9491 events. 1734/9491 cut-off events. For 107430/107609 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 129037 event pairs, 538 based on Foata normal form. 13/9318 useless extension candidates. Maximal degree in co-relation 43751. Up to 2415 conditions per place. [2021-12-06 21:02:55,671 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 509 selfloop transitions, 144 changer transitions 23/1087 dead transitions. [2021-12-06 21:02:55,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1097 places, 1087 transitions, 18411 flow [2021-12-06 21:02:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:02:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 21:02:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2021-12-06 21:02:55,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2021-12-06 21:02:55,674 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2021-12-06 21:02:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2021-12-06 21:02:55,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:55,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2021-12-06 21:02:55,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:55,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:55,681 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:55,681 INFO L186 Difference]: Start difference. First operand has 1078 places, 998 transitions, 15992 flow. Second operand 22 states and 5505 transitions. [2021-12-06 21:02:55,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1097 places, 1087 transitions, 18411 flow [2021-12-06 21:02:56,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1094 places, 1087 transitions, 18284 flow, removed 62 selfloop flow, removed 3 redundant places. [2021-12-06 21:02:56,857 INFO L242 Difference]: Finished difference. Result has 1108 places, 1030 transitions, 16933 flow [2021-12-06 21:02:56,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15867, PETRI_DIFFERENCE_MINUEND_PLACES=1073, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16933, PETRI_PLACES=1108, PETRI_TRANSITIONS=1030} [2021-12-06 21:02:56,858 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 852 predicate places. [2021-12-06 21:02:56,858 INFO L470 AbstractCegarLoop]: Abstraction has has 1108 places, 1030 transitions, 16933 flow [2021-12-06 21:02:56,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:56,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:56,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:56,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 21:02:56,859 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:02:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -212568294, now seen corresponding path program 14 times [2021-12-06 21:02:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:56,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203771972] [2021-12-06 21:02:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:56,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:02:56,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203771972] [2021-12-06 21:02:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203771972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:56,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:56,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:02:56,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792588505] [2021-12-06 21:02:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:56,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:56,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:56,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:02:56,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1108 places, 1030 transitions, 16933 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:56,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:56,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:02:56,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:01,298 INFO L129 PetriNetUnfolder]: 1768/9802 cut-off events. [2021-12-06 21:03:01,298 INFO L130 PetriNetUnfolder]: For 117112/117283 co-relation queries the response was YES. [2021-12-06 21:03:01,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46342 conditions, 9802 events. 1768/9802 cut-off events. For 117112/117283 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 134752 event pairs, 586 based on Foata normal form. 13/9623 useless extension candidates. Maximal degree in co-relation 46011. Up to 2440 conditions per place. [2021-12-06 21:03:01,548 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 561 selfloop transitions, 106 changer transitions 21/1099 dead transitions. [2021-12-06 21:03:01,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1126 places, 1099 transitions, 19237 flow [2021-12-06 21:03:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:03:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 21:03:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2021-12-06 21:03:01,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2021-12-06 21:03:01,551 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2021-12-06 21:03:01,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2021-12-06 21:03:01,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:01,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2021-12-06 21:03:01,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:01,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:01,557 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:01,557 INFO L186 Difference]: Start difference. First operand has 1108 places, 1030 transitions, 16933 flow. Second operand 21 states and 5258 transitions. [2021-12-06 21:03:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1126 places, 1099 transitions, 19237 flow [2021-12-06 21:03:02,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1124 places, 1099 transitions, 19033 flow, removed 102 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:03,011 INFO L242 Difference]: Finished difference. Result has 1138 places, 1054 transitions, 17606 flow [2021-12-06 21:03:03,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=16743, PETRI_DIFFERENCE_MINUEND_PLACES=1104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17606, PETRI_PLACES=1138, PETRI_TRANSITIONS=1054} [2021-12-06 21:03:03,012 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 882 predicate places. [2021-12-06 21:03:03,012 INFO L470 AbstractCegarLoop]: Abstraction has has 1138 places, 1054 transitions, 17606 flow [2021-12-06 21:03:03,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:03,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:03,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 21:03:03,013 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1792130372, now seen corresponding path program 15 times [2021-12-06 21:03:03,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068577451] [2021-12-06 21:03:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:03,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:03,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:03,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068577451] [2021-12-06 21:03:03,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068577451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:03,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:03,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:03,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827526570] [2021-12-06 21:03:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:03,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:03,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:03,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:03,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1138 places, 1054 transitions, 17606 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:03,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:03,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:03,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:07,351 INFO L129 PetriNetUnfolder]: 1791/10041 cut-off events. [2021-12-06 21:03:07,351 INFO L130 PetriNetUnfolder]: For 122972/123143 co-relation queries the response was YES. [2021-12-06 21:03:07,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47673 conditions, 10041 events. 1791/10041 cut-off events. For 122972/123143 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 139005 event pairs, 526 based on Foata normal form. 13/9868 useless extension candidates. Maximal degree in co-relation 47329. Up to 2511 conditions per place. [2021-12-06 21:03:07,619 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 530 selfloop transitions, 162 changer transitions 18/1121 dead transitions. [2021-12-06 21:03:07,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1153 places, 1121 transitions, 19829 flow [2021-12-06 21:03:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:03:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:03:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2021-12-06 21:03:07,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2021-12-06 21:03:07,622 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2021-12-06 21:03:07,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2021-12-06 21:03:07,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:07,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2021-12-06 21:03:07,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,627 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,627 INFO L186 Difference]: Start difference. First operand has 1138 places, 1054 transitions, 17606 flow. Second operand 18 states and 4511 transitions. [2021-12-06 21:03:07,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1153 places, 1121 transitions, 19829 flow [2021-12-06 21:03:09,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1151 places, 1121 transitions, 19627 flow, removed 101 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:09,017 INFO L242 Difference]: Finished difference. Result has 1159 places, 1075 transitions, 18261 flow [2021-12-06 21:03:09,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=17406, PETRI_DIFFERENCE_MINUEND_PLACES=1134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=906, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18261, PETRI_PLACES=1159, PETRI_TRANSITIONS=1075} [2021-12-06 21:03:09,018 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 903 predicate places. [2021-12-06 21:03:09,018 INFO L470 AbstractCegarLoop]: Abstraction has has 1159 places, 1075 transitions, 18261 flow [2021-12-06 21:03:09,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:09,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:09,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:09,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-06 21:03:09,019 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 830839342, now seen corresponding path program 16 times [2021-12-06 21:03:09,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:09,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816475386] [2021-12-06 21:03:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:09,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:09,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:09,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816475386] [2021-12-06 21:03:09,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816475386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:09,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:09,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:09,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671589259] [2021-12-06 21:03:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:09,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:09,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:09,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:09,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 1075 transitions, 18261 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:09,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:09,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:09,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:13,563 INFO L129 PetriNetUnfolder]: 1846/10267 cut-off events. [2021-12-06 21:03:13,563 INFO L130 PetriNetUnfolder]: For 129120/129291 co-relation queries the response was YES. [2021-12-06 21:03:13,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49767 conditions, 10267 events. 1846/10267 cut-off events. For 129120/129291 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 143121 event pairs, 525 based on Foata normal form. 13/10086 useless extension candidates. Maximal degree in co-relation 49416. Up to 2554 conditions per place. [2021-12-06 21:03:13,850 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 571 selfloop transitions, 135 changer transitions 16/1133 dead transitions. [2021-12-06 21:03:13,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1173 places, 1133 transitions, 20493 flow [2021-12-06 21:03:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:03:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:03:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2021-12-06 21:03:13,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2021-12-06 21:03:13,852 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2021-12-06 21:03:13,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2021-12-06 21:03:13,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:13,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2021-12-06 21:03:13,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:13,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:13,857 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:13,857 INFO L186 Difference]: Start difference. First operand has 1159 places, 1075 transitions, 18261 flow. Second operand 17 states and 4264 transitions. [2021-12-06 21:03:13,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1173 places, 1133 transitions, 20493 flow [2021-12-06 21:03:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1171 places, 1133 transitions, 20267 flow, removed 113 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:15,390 INFO L242 Difference]: Finished difference. Result has 1180 places, 1096 transitions, 18898 flow [2021-12-06 21:03:15,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=18079, PETRI_DIFFERENCE_MINUEND_PLACES=1155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18898, PETRI_PLACES=1180, PETRI_TRANSITIONS=1096} [2021-12-06 21:03:15,391 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 924 predicate places. [2021-12-06 21:03:15,391 INFO L470 AbstractCegarLoop]: Abstraction has has 1180 places, 1096 transitions, 18898 flow [2021-12-06 21:03:15,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:15,392 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:15,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:15,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 21:03:15,392 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 382049174, now seen corresponding path program 17 times [2021-12-06 21:03:15,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748858887] [2021-12-06 21:03:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:15,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:15,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:15,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748858887] [2021-12-06 21:03:15,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748858887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:15,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:15,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31371779] [2021-12-06 21:03:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:15,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:15,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:15,448 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:15,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1180 places, 1096 transitions, 18898 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:15,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:15,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:15,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:20,011 INFO L129 PetriNetUnfolder]: 1869/10467 cut-off events. [2021-12-06 21:03:20,012 INFO L130 PetriNetUnfolder]: For 137038/137209 co-relation queries the response was YES. [2021-12-06 21:03:20,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51237 conditions, 10467 events. 1869/10467 cut-off events. For 137038/137209 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 145793 event pairs, 578 based on Foata normal form. 13/10286 useless extension candidates. Maximal degree in co-relation 50878. Up to 2589 conditions per place. [2021-12-06 21:03:20,321 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 596 selfloop transitions, 127 changer transitions 17/1151 dead transitions. [2021-12-06 21:03:20,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1195 places, 1151 transitions, 21136 flow [2021-12-06 21:03:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:03:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:03:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2021-12-06 21:03:20,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2021-12-06 21:03:20,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2021-12-06 21:03:20,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2021-12-06 21:03:20,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:20,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2021-12-06 21:03:20,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:20,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:20,329 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:20,329 INFO L186 Difference]: Start difference. First operand has 1180 places, 1096 transitions, 18898 flow. Second operand 18 states and 4514 transitions. [2021-12-06 21:03:20,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1195 places, 1151 transitions, 21136 flow [2021-12-06 21:03:22,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1193 places, 1151 transitions, 20996 flow, removed 70 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:22,043 INFO L242 Difference]: Finished difference. Result has 1201 places, 1115 transitions, 19566 flow [2021-12-06 21:03:22,044 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=18762, PETRI_DIFFERENCE_MINUEND_PLACES=1176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19566, PETRI_PLACES=1201, PETRI_TRANSITIONS=1115} [2021-12-06 21:03:22,044 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 945 predicate places. [2021-12-06 21:03:22,044 INFO L470 AbstractCegarLoop]: Abstraction has has 1201 places, 1115 transitions, 19566 flow [2021-12-06 21:03:22,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:22,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:22,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:22,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 21:03:22,045 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1365412372, now seen corresponding path program 18 times [2021-12-06 21:03:22,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:22,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836210388] [2021-12-06 21:03:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:22,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:22,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836210388] [2021-12-06 21:03:22,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836210388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:22,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:22,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224461190] [2021-12-06 21:03:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:22,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:22,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:22,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:22,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1201 places, 1115 transitions, 19566 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:22,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:22,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:22,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:27,095 INFO L129 PetriNetUnfolder]: 1872/10609 cut-off events. [2021-12-06 21:03:27,095 INFO L130 PetriNetUnfolder]: For 143882/144053 co-relation queries the response was YES. [2021-12-06 21:03:27,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52092 conditions, 10609 events. 1872/10609 cut-off events. For 143882/144053 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 148129 event pairs, 535 based on Foata normal form. 13/10435 useless extension candidates. Maximal degree in co-relation 51726. Up to 2615 conditions per place. [2021-12-06 21:03:27,390 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 554 selfloop transitions, 179 changer transitions 22/1166 dead transitions. [2021-12-06 21:03:27,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1214 places, 1166 transitions, 21554 flow [2021-12-06 21:03:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:03:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 21:03:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2021-12-06 21:03:27,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2021-12-06 21:03:27,393 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2021-12-06 21:03:27,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2021-12-06 21:03:27,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:27,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2021-12-06 21:03:27,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:27,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:27,397 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:27,397 INFO L186 Difference]: Start difference. First operand has 1201 places, 1115 transitions, 19566 flow. Second operand 16 states and 4017 transitions. [2021-12-06 21:03:27,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1214 places, 1166 transitions, 21554 flow [2021-12-06 21:03:29,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1212 places, 1166 transitions, 21376 flow, removed 89 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:29,101 INFO L242 Difference]: Finished difference. Result has 1219 places, 1123 transitions, 19979 flow [2021-12-06 21:03:29,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19390, PETRI_DIFFERENCE_MINUEND_PLACES=1197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=940, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19979, PETRI_PLACES=1219, PETRI_TRANSITIONS=1123} [2021-12-06 21:03:29,102 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 963 predicate places. [2021-12-06 21:03:29,102 INFO L470 AbstractCegarLoop]: Abstraction has has 1219 places, 1123 transitions, 19979 flow [2021-12-06 21:03:29,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:29,102 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:29,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:29,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 21:03:29,102 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash -192138724, now seen corresponding path program 19 times [2021-12-06 21:03:29,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:29,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225992629] [2021-12-06 21:03:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:29,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:29,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:29,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225992629] [2021-12-06 21:03:29,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225992629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:29,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:29,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:29,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024488876] [2021-12-06 21:03:29,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:29,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:29,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:29,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:29,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1219 places, 1123 transitions, 19979 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:29,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:29,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:29,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:34,043 INFO L129 PetriNetUnfolder]: 1891/10729 cut-off events. [2021-12-06 21:03:34,043 INFO L130 PetriNetUnfolder]: For 151412/151583 co-relation queries the response was YES. [2021-12-06 21:03:34,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53544 conditions, 10729 events. 1891/10729 cut-off events. For 151412/151583 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 151171 event pairs, 531 based on Foata normal form. 13/10543 useless extension candidates. Maximal degree in co-relation 53172. Up to 2636 conditions per place. [2021-12-06 21:03:34,420 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 585 selfloop transitions, 153 changer transitions 23/1172 dead transitions. [2021-12-06 21:03:34,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1234 places, 1172 transitions, 22084 flow [2021-12-06 21:03:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:03:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:03:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2021-12-06 21:03:34,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2021-12-06 21:03:34,423 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2021-12-06 21:03:34,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2021-12-06 21:03:34,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:34,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2021-12-06 21:03:34,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:34,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:34,428 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:34,428 INFO L186 Difference]: Start difference. First operand has 1219 places, 1123 transitions, 19979 flow. Second operand 18 states and 4514 transitions. [2021-12-06 21:03:34,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1234 places, 1172 transitions, 22084 flow [2021-12-06 21:03:36,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1229 places, 1172 transitions, 21779 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-12-06 21:03:36,142 INFO L242 Difference]: Finished difference. Result has 1236 places, 1137 transitions, 20419 flow [2021-12-06 21:03:36,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19692, PETRI_DIFFERENCE_MINUEND_PLACES=1212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=20419, PETRI_PLACES=1236, PETRI_TRANSITIONS=1137} [2021-12-06 21:03:36,143 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 980 predicate places. [2021-12-06 21:03:36,143 INFO L470 AbstractCegarLoop]: Abstraction has has 1236 places, 1137 transitions, 20419 flow [2021-12-06 21:03:36,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:36,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:36,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:36,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-06 21:03:36,143 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash 704259706, now seen corresponding path program 20 times [2021-12-06 21:03:36,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:36,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103106514] [2021-12-06 21:03:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:36,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:36,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103106514] [2021-12-06 21:03:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103106514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:36,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:36,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:03:36,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398448902] [2021-12-06 21:03:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:36,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:36,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:36,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2021-12-06 21:03:36,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1236 places, 1137 transitions, 20419 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:36,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:36,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2021-12-06 21:03:36,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:41,375 INFO L129 PetriNetUnfolder]: 1891/10916 cut-off events. [2021-12-06 21:03:41,375 INFO L130 PetriNetUnfolder]: For 152977/153148 co-relation queries the response was YES. [2021-12-06 21:03:41,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53795 conditions, 10916 events. 1891/10916 cut-off events. For 152977/153148 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 154121 event pairs, 578 based on Foata normal form. 13/10738 useless extension candidates. Maximal degree in co-relation 53418. Up to 2632 conditions per place. [2021-12-06 21:03:41,694 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 605 selfloop transitions, 138 changer transitions 25/1179 dead transitions. [2021-12-06 21:03:41,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1250 places, 1179 transitions, 22357 flow [2021-12-06 21:03:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:03:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 21:03:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2021-12-06 21:03:41,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2021-12-06 21:03:41,696 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2021-12-06 21:03:41,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2021-12-06 21:03:41,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:41,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2021-12-06 21:03:41,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:41,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:41,701 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:41,701 INFO L186 Difference]: Start difference. First operand has 1236 places, 1137 transitions, 20419 flow. Second operand 17 states and 4268 transitions. [2021-12-06 21:03:41,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1250 places, 1179 transitions, 22357 flow [2021-12-06 21:03:43,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1246 places, 1179 transitions, 22167 flow, removed 57 selfloop flow, removed 4 redundant places. [2021-12-06 21:03:43,474 INFO L242 Difference]: Finished difference. Result has 1253 places, 1145 transitions, 20768 flow [2021-12-06 21:03:43,475 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20235, PETRI_DIFFERENCE_MINUEND_PLACES=1230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1002, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=20768, PETRI_PLACES=1253, PETRI_TRANSITIONS=1145} [2021-12-06 21:03:43,475 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 997 predicate places. [2021-12-06 21:03:43,475 INFO L470 AbstractCegarLoop]: Abstraction has has 1253 places, 1145 transitions, 20768 flow [2021-12-06 21:03:43,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:43,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:43,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:43,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-06 21:03:43,476 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2038128082, now seen corresponding path program 1 times [2021-12-06 21:03:43,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:43,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617351099] [2021-12-06 21:03:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:43,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:43,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617351099] [2021-12-06 21:03:43,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617351099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:43,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:43,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:43,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794180565] [2021-12-06 21:03:43,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:43,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:43,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:43,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:43,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:43,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2021-12-06 21:03:43,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1253 places, 1145 transitions, 20768 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:43,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:43,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2021-12-06 21:03:43,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:47,191 INFO L129 PetriNetUnfolder]: 1030/9683 cut-off events. [2021-12-06 21:03:47,192 INFO L130 PetriNetUnfolder]: For 131408/132185 co-relation queries the response was YES. [2021-12-06 21:03:47,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43541 conditions, 9683 events. 1030/9683 cut-off events. For 131408/132185 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 140130 event pairs, 25 based on Foata normal form. 22/9447 useless extension candidates. Maximal degree in co-relation 43160. Up to 538 conditions per place. [2021-12-06 21:03:47,533 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 15 selfloop transitions, 4 changer transitions 0/1152 dead transitions. [2021-12-06 21:03:47,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1253 places, 1152 transitions, 20825 flow [2021-12-06 21:03:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:03:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2021-12-06 21:03:47,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2021-12-06 21:03:47,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2021-12-06 21:03:47,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2021-12-06 21:03:47,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:47,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2021-12-06 21:03:47,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:47,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:47,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:47,572 INFO L186 Difference]: Start difference. First operand has 1253 places, 1145 transitions, 20768 flow. Second operand 3 states and 816 transitions. [2021-12-06 21:03:47,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1253 places, 1152 transitions, 20825 flow [2021-12-06 21:03:49,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1250 places, 1152 transitions, 20648 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-12-06 21:03:49,077 INFO L242 Difference]: Finished difference. Result has 1252 places, 1147 transitions, 20619 flow [2021-12-06 21:03:49,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20591, PETRI_DIFFERENCE_MINUEND_PLACES=1248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20619, PETRI_PLACES=1252, PETRI_TRANSITIONS=1147} [2021-12-06 21:03:49,078 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 996 predicate places. [2021-12-06 21:03:49,078 INFO L470 AbstractCegarLoop]: Abstraction has has 1252 places, 1147 transitions, 20619 flow [2021-12-06 21:03:49,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:49,078 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:49,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:49,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 21:03:49,078 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1109948976, now seen corresponding path program 2 times [2021-12-06 21:03:49,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:49,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789475443] [2021-12-06 21:03:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:49,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:49,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:49,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789475443] [2021-12-06 21:03:49,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789475443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:49,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:49,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:49,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144944049] [2021-12-06 21:03:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:49,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:49,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:49,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2021-12-06 21:03:49,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1252 places, 1147 transitions, 20619 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:49,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:49,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2021-12-06 21:03:49,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:52,237 INFO L129 PetriNetUnfolder]: 864/8186 cut-off events. [2021-12-06 21:03:52,237 INFO L130 PetriNetUnfolder]: For 105249/106012 co-relation queries the response was YES. [2021-12-06 21:03:52,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36015 conditions, 8186 events. 864/8186 cut-off events. For 105249/106012 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 114130 event pairs, 23 based on Foata normal form. 37/8007 useless extension candidates. Maximal degree in co-relation 35635. Up to 422 conditions per place. [2021-12-06 21:03:52,531 INFO L132 encePairwiseOnDemand]: 282/286 looper letters, 19 selfloop transitions, 2 changer transitions 0/1154 dead transitions. [2021-12-06 21:03:52,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1254 places, 1154 transitions, 20684 flow [2021-12-06 21:03:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:03:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2021-12-06 21:03:52,532 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2021-12-06 21:03:52,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2021-12-06 21:03:52,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2021-12-06 21:03:52,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:52,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2021-12-06 21:03:52,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:52,534 INFO L186 Difference]: Start difference. First operand has 1252 places, 1147 transitions, 20619 flow. Second operand 3 states and 816 transitions. [2021-12-06 21:03:52,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1254 places, 1154 transitions, 20684 flow [2021-12-06 21:03:53,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1252 places, 1154 transitions, 20668 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-06 21:03:53,792 INFO L242 Difference]: Finished difference. Result has 1254 places, 1149 transitions, 20627 flow [2021-12-06 21:03:53,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20603, PETRI_DIFFERENCE_MINUEND_PLACES=1250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20627, PETRI_PLACES=1254, PETRI_TRANSITIONS=1149} [2021-12-06 21:03:53,793 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 998 predicate places. [2021-12-06 21:03:53,793 INFO L470 AbstractCegarLoop]: Abstraction has has 1254 places, 1149 transitions, 20627 flow [2021-12-06 21:03:53,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:53,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:53,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-06 21:03:53,794 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1357903948, now seen corresponding path program 1 times [2021-12-06 21:03:53,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:53,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064795469] [2021-12-06 21:03:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:53,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:53,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:53,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064795469] [2021-12-06 21:03:53,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064795469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:53,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:53,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:53,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826973596] [2021-12-06 21:03:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:53,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:53,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:53,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2021-12-06 21:03:53,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1254 places, 1149 transitions, 20627 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:53,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:53,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2021-12-06 21:03:53,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:57,701 INFO L129 PetriNetUnfolder]: 977/10078 cut-off events. [2021-12-06 21:03:57,701 INFO L130 PetriNetUnfolder]: For 111108/111957 co-relation queries the response was YES. [2021-12-06 21:03:57,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40201 conditions, 10078 events. 977/10078 cut-off events. For 111108/111957 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 144314 event pairs, 66 based on Foata normal form. 101/9811 useless extension candidates. Maximal degree in co-relation 39820. Up to 561 conditions per place. [2021-12-06 21:03:58,002 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 4 changer transitions 2/1157 dead transitions. [2021-12-06 21:03:58,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1256 places, 1157 transitions, 20695 flow [2021-12-06 21:03:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:03:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2021-12-06 21:03:58,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2021-12-06 21:03:58,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2021-12-06 21:03:58,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2021-12-06 21:03:58,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:58,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2021-12-06 21:03:58,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:58,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:58,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:58,005 INFO L186 Difference]: Start difference. First operand has 1254 places, 1149 transitions, 20627 flow. Second operand 3 states and 811 transitions. [2021-12-06 21:03:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1256 places, 1157 transitions, 20695 flow [2021-12-06 21:03:59,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1255 places, 1157 transitions, 20689 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 21:03:59,458 INFO L242 Difference]: Finished difference. Result has 1257 places, 1151 transitions, 20653 flow [2021-12-06 21:03:59,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20621, PETRI_DIFFERENCE_MINUEND_PLACES=1253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20653, PETRI_PLACES=1257, PETRI_TRANSITIONS=1151} [2021-12-06 21:03:59,459 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1001 predicate places. [2021-12-06 21:03:59,459 INFO L470 AbstractCegarLoop]: Abstraction has has 1257 places, 1151 transitions, 20653 flow [2021-12-06 21:03:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:59,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:59,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:59,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-06 21:03:59,459 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:03:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1001247616, now seen corresponding path program 1 times [2021-12-06 21:03:59,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:59,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692777598] [2021-12-06 21:03:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:59,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:03:59,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692777598] [2021-12-06 21:03:59,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692777598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:59,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:59,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:03:59,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031687831] [2021-12-06 21:03:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:59,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:59,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:03:59,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2021-12-06 21:03:59,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1257 places, 1151 transitions, 20653 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:59,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:59,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2021-12-06 21:03:59,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:03,188 INFO L129 PetriNetUnfolder]: 946/9148 cut-off events. [2021-12-06 21:04:03,188 INFO L130 PetriNetUnfolder]: For 109917/110725 co-relation queries the response was YES. [2021-12-06 21:04:03,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38561 conditions, 9148 events. 946/9148 cut-off events. For 109917/110725 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 128920 event pairs, 48 based on Foata normal form. 77/8954 useless extension candidates. Maximal degree in co-relation 38179. Up to 545 conditions per place. [2021-12-06 21:04:03,461 INFO L132 encePairwiseOnDemand]: 276/286 looper letters, 22 selfloop transitions, 6 changer transitions 0/1159 dead transitions. [2021-12-06 21:04:03,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1259 places, 1159 transitions, 20737 flow [2021-12-06 21:04:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:04:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:04:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2021-12-06 21:04:03,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2021-12-06 21:04:03,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2021-12-06 21:04:03,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2021-12-06 21:04:03,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:03,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2021-12-06 21:04:03,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:03,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:03,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:03,463 INFO L186 Difference]: Start difference. First operand has 1257 places, 1151 transitions, 20653 flow. Second operand 3 states and 811 transitions. [2021-12-06 21:04:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1259 places, 1159 transitions, 20737 flow [2021-12-06 21:04:04,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1258 places, 1159 transitions, 20733 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:04:04,899 INFO L242 Difference]: Finished difference. Result has 1260 places, 1155 transitions, 20705 flow [2021-12-06 21:04:04,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20649, PETRI_DIFFERENCE_MINUEND_PLACES=1256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20705, PETRI_PLACES=1260, PETRI_TRANSITIONS=1155} [2021-12-06 21:04:04,900 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1004 predicate places. [2021-12-06 21:04:04,900 INFO L470 AbstractCegarLoop]: Abstraction has has 1260 places, 1155 transitions, 20705 flow [2021-12-06 21:04:04,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:04,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:04:04,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:04,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-06 21:04:04,901 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:04:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1396385364, now seen corresponding path program 1 times [2021-12-06 21:04:04,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:04,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698700113] [2021-12-06 21:04:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:04,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:04,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:04,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698700113] [2021-12-06 21:04:04,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698700113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:04,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:04,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:04:04,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175739806] [2021-12-06 21:04:04,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:04,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:04:04,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:04:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:04:04,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 286 [2021-12-06 21:04:04,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1260 places, 1155 transitions, 20705 flow. Second operand has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:04,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:04:04,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 286 [2021-12-06 21:04:04,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:09,967 INFO L129 PetriNetUnfolder]: 1235/11962 cut-off events. [2021-12-06 21:04:09,967 INFO L130 PetriNetUnfolder]: For 153387/155476 co-relation queries the response was YES. [2021-12-06 21:04:10,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51798 conditions, 11962 events. 1235/11962 cut-off events. For 153387/155476 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 170538 event pairs, 50 based on Foata normal form. 176/11916 useless extension candidates. Maximal degree in co-relation 51415. Up to 713 conditions per place. [2021-12-06 21:04:10,322 INFO L132 encePairwiseOnDemand]: 273/286 looper letters, 45 selfloop transitions, 9 changer transitions 11/1191 dead transitions. [2021-12-06 21:04:10,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1274 places, 1191 transitions, 20934 flow [2021-12-06 21:04:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:04:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-06 21:04:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3770 transitions. [2021-12-06 21:04:10,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2021-12-06 21:04:10,325 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3770 transitions. [2021-12-06 21:04:10,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3770 transitions. [2021-12-06 21:04:10,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:10,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3770 transitions. [2021-12-06 21:04:10,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.33333333333334) internal successors, (3770), 15 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:10,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:10,329 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:10,329 INFO L186 Difference]: Start difference. First operand has 1260 places, 1155 transitions, 20705 flow. Second operand 15 states and 3770 transitions. [2021-12-06 21:04:10,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1274 places, 1191 transitions, 20934 flow [2021-12-06 21:04:12,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1272 places, 1191 transitions, 20914 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-06 21:04:12,102 INFO L242 Difference]: Finished difference. Result has 1283 places, 1160 transitions, 20745 flow [2021-12-06 21:04:12,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20685, PETRI_DIFFERENCE_MINUEND_PLACES=1258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20745, PETRI_PLACES=1283, PETRI_TRANSITIONS=1160} [2021-12-06 21:04:12,103 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1027 predicate places. [2021-12-06 21:04:12,103 INFO L470 AbstractCegarLoop]: Abstraction has has 1283 places, 1160 transitions, 20745 flow [2021-12-06 21:04:12,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:12,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:04:12,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:12,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-06 21:04:12,104 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:04:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 958013994, now seen corresponding path program 1 times [2021-12-06 21:04:12,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:12,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409254557] [2021-12-06 21:04:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:12,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:12,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409254557] [2021-12-06 21:04:12,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409254557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:12,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:12,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:04:12,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902338408] [2021-12-06 21:04:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:12,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:04:12,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:04:12,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:04:12,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:04:12,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1283 places, 1160 transitions, 20745 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:12,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:04:12,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:04:12,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:29,456 INFO L129 PetriNetUnfolder]: 10980/32620 cut-off events. [2021-12-06 21:04:29,456 INFO L130 PetriNetUnfolder]: For 349372/349687 co-relation queries the response was YES. [2021-12-06 21:04:31,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136913 conditions, 32620 events. 10980/32620 cut-off events. For 349372/349687 co-relation queries the response was YES. Maximal size of possible extension queue 2678. Compared 450283 event pairs, 6839 based on Foata normal form. 51/30435 useless extension candidates. Maximal degree in co-relation 136519. Up to 18732 conditions per place. [2021-12-06 21:04:31,496 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 884 selfloop transitions, 90 changer transitions 58/1446 dead transitions. [2021-12-06 21:04:31,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1333 places, 1446 transitions, 24846 flow [2021-12-06 21:04:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 21:04:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-12-06 21:04:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13825 transitions. [2021-12-06 21:04:31,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8334338075717386 [2021-12-06 21:04:31,502 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13825 transitions. [2021-12-06 21:04:31,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13825 transitions. [2021-12-06 21:04:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13825 transitions. [2021-12-06 21:04:31,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.36206896551724) internal successors, (13825), 58 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:31,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:31,521 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:31,521 INFO L186 Difference]: Start difference. First operand has 1283 places, 1160 transitions, 20745 flow. Second operand 58 states and 13825 transitions. [2021-12-06 21:04:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1333 places, 1446 transitions, 24846 flow [2021-12-06 21:04:35,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1328 places, 1446 transitions, 24825 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-12-06 21:04:35,803 INFO L242 Difference]: Finished difference. Result has 1380 places, 1249 transitions, 21643 flow [2021-12-06 21:04:35,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20732, PETRI_DIFFERENCE_MINUEND_PLACES=1271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=21643, PETRI_PLACES=1380, PETRI_TRANSITIONS=1249} [2021-12-06 21:04:35,804 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1124 predicate places. [2021-12-06 21:04:35,804 INFO L470 AbstractCegarLoop]: Abstraction has has 1380 places, 1249 transitions, 21643 flow [2021-12-06 21:04:35,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:35,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:04:35,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:35,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-06 21:04:35,805 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:04:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1933941778, now seen corresponding path program 1 times [2021-12-06 21:04:35,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:35,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411157457] [2021-12-06 21:04:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:35,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:04:35,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:35,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411157457] [2021-12-06 21:04:35,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411157457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:35,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:04:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748391365] [2021-12-06 21:04:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:35,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:04:35,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:04:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:04:35,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:04:35,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1380 places, 1249 transitions, 21643 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:35,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:04:35,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:04:35,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:55,794 INFO L129 PetriNetUnfolder]: 11680/34679 cut-off events. [2021-12-06 21:04:55,794 INFO L130 PetriNetUnfolder]: For 491827/492152 co-relation queries the response was YES. [2021-12-06 21:04:58,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181509 conditions, 34679 events. 11680/34679 cut-off events. For 491827/492152 co-relation queries the response was YES. Maximal size of possible extension queue 2860. Compared 479075 event pairs, 4623 based on Foata normal form. 65/32473 useless extension candidates. Maximal degree in co-relation 181067. Up to 15620 conditions per place. [2021-12-06 21:04:58,152 INFO L132 encePairwiseOnDemand]: 263/286 looper letters, 607 selfloop transitions, 164 changer transitions 512/1522 dead transitions. [2021-12-06 21:04:58,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1411 places, 1522 transitions, 27230 flow [2021-12-06 21:04:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 21:04:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-12-06 21:04:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8197 transitions. [2021-12-06 21:04:58,156 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.84296585767174 [2021-12-06 21:04:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8197 transitions. [2021-12-06 21:04:58,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8197 transitions. [2021-12-06 21:04:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:58,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8197 transitions. [2021-12-06 21:04:58,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 241.08823529411765) internal successors, (8197), 34 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:58,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:58,167 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:58,167 INFO L186 Difference]: Start difference. First operand has 1380 places, 1249 transitions, 21643 flow. Second operand 34 states and 8197 transitions. [2021-12-06 21:04:58,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1411 places, 1522 transitions, 27230 flow [2021-12-06 21:05:05,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1409 places, 1522 transitions, 26916 flow, removed 157 selfloop flow, removed 2 redundant places. [2021-12-06 21:05:05,927 INFO L242 Difference]: Finished difference. Result has 1439 places, 896 transitions, 13786 flow [2021-12-06 21:05:05,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=21373, PETRI_DIFFERENCE_MINUEND_PLACES=1376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=13786, PETRI_PLACES=1439, PETRI_TRANSITIONS=896} [2021-12-06 21:05:05,928 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1183 predicate places. [2021-12-06 21:05:05,928 INFO L470 AbstractCegarLoop]: Abstraction has has 1439 places, 896 transitions, 13786 flow [2021-12-06 21:05:05,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:05,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:05,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:05,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-06 21:05:05,929 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:05:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 935926426, now seen corresponding path program 1 times [2021-12-06 21:05:05,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:05,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192472534] [2021-12-06 21:05:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:05,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:05:05,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192472534] [2021-12-06 21:05:05,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192472534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:05,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:05,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:05:05,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980091627] [2021-12-06 21:05:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:05,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:05:05,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:05:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:05:05,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2021-12-06 21:05:05,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1439 places, 896 transitions, 13786 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:05,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:05:05,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2021-12-06 21:05:05,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:11,333 INFO L129 PetriNetUnfolder]: 1735/11819 cut-off events. [2021-12-06 21:05:11,333 INFO L130 PetriNetUnfolder]: For 207311/208965 co-relation queries the response was YES. [2021-12-06 21:05:11,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 11819 events. 1735/11819 cut-off events. For 207311/208965 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 158953 event pairs, 346 based on Foata normal form. 170/11503 useless extension candidates. Maximal degree in co-relation 62676. Up to 1401 conditions per place. [2021-12-06 21:05:11,830 INFO L132 encePairwiseOnDemand]: 280/286 looper letters, 19 selfloop transitions, 3 changer transitions 0/904 dead transitions. [2021-12-06 21:05:11,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1133 places, 904 transitions, 13851 flow [2021-12-06 21:05:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:05:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:05:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2021-12-06 21:05:11,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-12-06 21:05:11,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2021-12-06 21:05:11,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2021-12-06 21:05:11,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:05:11,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2021-12-06 21:05:11,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:11,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:11,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:11,833 INFO L186 Difference]: Start difference. First operand has 1439 places, 896 transitions, 13786 flow. Second operand 3 states and 814 transitions. [2021-12-06 21:05:11,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1133 places, 904 transitions, 13851 flow [2021-12-06 21:05:14,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1009 places, 904 transitions, 12128 flow, removed 700 selfloop flow, removed 124 redundant places. [2021-12-06 21:05:14,538 INFO L242 Difference]: Finished difference. Result has 1011 places, 899 transitions, 12093 flow [2021-12-06 21:05:14,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12063, PETRI_DIFFERENCE_MINUEND_PLACES=1007, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12093, PETRI_PLACES=1011, PETRI_TRANSITIONS=899} [2021-12-06 21:05:14,539 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 755 predicate places. [2021-12-06 21:05:14,539 INFO L470 AbstractCegarLoop]: Abstraction has has 1011 places, 899 transitions, 12093 flow [2021-12-06 21:05:14,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:14,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:14,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:14,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-06 21:05:14,540 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:05:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 782012990, now seen corresponding path program 2 times [2021-12-06 21:05:14,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412820630] [2021-12-06 21:05:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:14,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:05:14,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412820630] [2021-12-06 21:05:14,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412820630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:14,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:14,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:05:14,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390218210] [2021-12-06 21:05:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:14,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:05:14,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:05:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:05:14,561 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2021-12-06 21:05:14,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1011 places, 899 transitions, 12093 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:14,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:05:14,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2021-12-06 21:05:14,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:18,913 INFO L129 PetriNetUnfolder]: 1686/11920 cut-off events. [2021-12-06 21:05:18,913 INFO L130 PetriNetUnfolder]: For 133166/134351 co-relation queries the response was YES. [2021-12-06 21:05:19,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53404 conditions, 11920 events. 1686/11920 cut-off events. For 133166/134351 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 159752 event pairs, 398 based on Foata normal form. 181/11634 useless extension candidates. Maximal degree in co-relation 53045. Up to 1219 conditions per place. [2021-12-06 21:05:19,267 INFO L132 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 5 changer transitions 0/907 dead transitions. [2021-12-06 21:05:19,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 907 transitions, 12170 flow [2021-12-06 21:05:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:05:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:05:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2021-12-06 21:05:19,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-12-06 21:05:19,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2021-12-06 21:05:19,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2021-12-06 21:05:19,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:05:19,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2021-12-06 21:05:19,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:19,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:19,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:19,270 INFO L186 Difference]: Start difference. First operand has 1011 places, 899 transitions, 12093 flow. Second operand 3 states and 814 transitions. [2021-12-06 21:05:19,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 907 transitions, 12170 flow [2021-12-06 21:05:20,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1011 places, 907 transitions, 12151 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-12-06 21:05:20,851 INFO L242 Difference]: Finished difference. Result has 1013 places, 902 transitions, 12118 flow [2021-12-06 21:05:20,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12074, PETRI_DIFFERENCE_MINUEND_PLACES=1009, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12118, PETRI_PLACES=1013, PETRI_TRANSITIONS=902} [2021-12-06 21:05:20,852 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 757 predicate places. [2021-12-06 21:05:20,852 INFO L470 AbstractCegarLoop]: Abstraction has has 1013 places, 902 transitions, 12118 flow [2021-12-06 21:05:20,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:20,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:20,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:20,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-06 21:05:20,852 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:05:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1843078578, now seen corresponding path program 2 times [2021-12-06 21:05:20,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:20,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316312621] [2021-12-06 21:05:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:20,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:05:20,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:20,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316312621] [2021-12-06 21:05:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316312621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:20,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:05:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981139834] [2021-12-06 21:05:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:20,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:05:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:05:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:05:20,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:05:20,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1013 places, 902 transitions, 12118 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:20,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:05:20,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:05:20,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:34,845 INFO L129 PetriNetUnfolder]: 10121/30175 cut-off events. [2021-12-06 21:05:34,845 INFO L130 PetriNetUnfolder]: For 396848/398074 co-relation queries the response was YES. [2021-12-06 21:05:36,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159880 conditions, 30175 events. 10121/30175 cut-off events. For 396848/398074 co-relation queries the response was YES. Maximal size of possible extension queue 2763. Compared 413645 event pairs, 5772 based on Foata normal form. 6/28240 useless extension candidates. Maximal degree in co-relation 159521. Up to 17092 conditions per place. [2021-12-06 21:05:36,586 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 812 selfloop transitions, 137 changer transitions 62/1256 dead transitions. [2021-12-06 21:05:36,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1070 places, 1256 transitions, 17254 flow [2021-12-06 21:05:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 21:05:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-12-06 21:05:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13829 transitions. [2021-12-06 21:05:36,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8336749457439112 [2021-12-06 21:05:36,592 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13829 transitions. [2021-12-06 21:05:36,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13829 transitions. [2021-12-06 21:05:36,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:05:36,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13829 transitions. [2021-12-06 21:05:36,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.43103448275863) internal successors, (13829), 58 states have internal predecessors, (13829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:36,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:36,612 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:36,612 INFO L186 Difference]: Start difference. First operand has 1013 places, 902 transitions, 12118 flow. Second operand 58 states and 13829 transitions. [2021-12-06 21:05:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1070 places, 1256 transitions, 17254 flow [2021-12-06 21:05:41,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 1256 transitions, 17238 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-12-06 21:05:41,807 INFO L242 Difference]: Finished difference. Result has 1119 places, 991 transitions, 13696 flow [2021-12-06 21:05:41,808 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12102, PETRI_DIFFERENCE_MINUEND_PLACES=1011, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=13696, PETRI_PLACES=1119, PETRI_TRANSITIONS=991} [2021-12-06 21:05:41,808 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 863 predicate places. [2021-12-06 21:05:41,808 INFO L470 AbstractCegarLoop]: Abstraction has has 1119 places, 991 transitions, 13696 flow [2021-12-06 21:05:41,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:41,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:41,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:41,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-06 21:05:41,809 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:05:41,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash -552655926, now seen corresponding path program 3 times [2021-12-06 21:05:41,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:41,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065232101] [2021-12-06 21:05:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:41,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:05:41,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065232101] [2021-12-06 21:05:41,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065232101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:41,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:41,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:05:41,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032847729] [2021-12-06 21:05:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:41,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:05:41,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:05:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:05:41,897 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:05:41,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1119 places, 991 transitions, 13696 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:41,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:05:41,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:05:41,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:58,309 INFO L129 PetriNetUnfolder]: 10667/31677 cut-off events. [2021-12-06 21:05:58,309 INFO L130 PetriNetUnfolder]: For 487416/488641 co-relation queries the response was YES. [2021-12-06 21:06:00,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182553 conditions, 31677 events. 10667/31677 cut-off events. For 487416/488641 co-relation queries the response was YES. Maximal size of possible extension queue 2882. Compared 434811 event pairs, 6131 based on Foata normal form. 28/29688 useless extension candidates. Maximal degree in co-relation 182143. Up to 17565 conditions per place. [2021-12-06 21:06:00,252 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 781 selfloop transitions, 116 changer transitions 21/1163 dead transitions. [2021-12-06 21:06:00,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1144 places, 1163 transitions, 18023 flow [2021-12-06 21:06:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 21:06:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 21:06:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 6716 transitions. [2021-12-06 21:06:00,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386613386613386 [2021-12-06 21:06:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 6716 transitions. [2021-12-06 21:06:00,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 6716 transitions. [2021-12-06 21:06:00,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:00,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 6716 transitions. [2021-12-06 21:06:00,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 239.85714285714286) internal successors, (6716), 28 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:00,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 286.0) internal successors, (8294), 29 states have internal predecessors, (8294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:00,263 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 286.0) internal successors, (8294), 29 states have internal predecessors, (8294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:00,263 INFO L186 Difference]: Start difference. First operand has 1119 places, 991 transitions, 13696 flow. Second operand 28 states and 6716 transitions. [2021-12-06 21:06:00,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1144 places, 1163 transitions, 18023 flow [2021-12-06 21:06:08,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1142 places, 1163 transitions, 17345 flow, removed 339 selfloop flow, removed 2 redundant places. [2021-12-06 21:06:08,817 INFO L242 Difference]: Finished difference. Result has 1159 places, 1045 transitions, 14495 flow [2021-12-06 21:06:08,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13126, PETRI_DIFFERENCE_MINUEND_PLACES=1115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=909, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14495, PETRI_PLACES=1159, PETRI_TRANSITIONS=1045} [2021-12-06 21:06:08,818 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 903 predicate places. [2021-12-06 21:06:08,818 INFO L470 AbstractCegarLoop]: Abstraction has has 1159 places, 1045 transitions, 14495 flow [2021-12-06 21:06:08,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:08,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:08,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:08,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-06 21:06:08,819 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:06:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1184901988, now seen corresponding path program 4 times [2021-12-06 21:06:08,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:08,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303571456] [2021-12-06 21:06:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:08,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:08,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:08,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303571456] [2021-12-06 21:06:08,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303571456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:08,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:08,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:06:08,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212299366] [2021-12-06 21:06:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:08,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:06:08,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:06:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:06:08,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:06:08,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 1045 transitions, 14495 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:08,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:08,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:06:08,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:27,092 INFO L129 PetriNetUnfolder]: 11396/33473 cut-off events. [2021-12-06 21:06:27,093 INFO L130 PetriNetUnfolder]: For 467396/468651 co-relation queries the response was YES. [2021-12-06 21:06:29,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185278 conditions, 33473 events. 11396/33473 cut-off events. For 467396/468651 co-relation queries the response was YES. Maximal size of possible extension queue 3017. Compared 462516 event pairs, 6379 based on Foata normal form. 2/31449 useless extension candidates. Maximal degree in co-relation 184852. Up to 17716 conditions per place. [2021-12-06 21:06:29,312 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 865 selfloop transitions, 126 changer transitions 53/1289 dead transitions. [2021-12-06 21:06:29,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1207 places, 1289 transitions, 20251 flow [2021-12-06 21:06:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-06 21:06:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-12-06 21:06:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 12163 transitions. [2021-12-06 21:06:29,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8338818044700398 [2021-12-06 21:06:29,317 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 12163 transitions. [2021-12-06 21:06:29,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 12163 transitions. [2021-12-06 21:06:29,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:29,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 12163 transitions. [2021-12-06 21:06:29,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 238.49019607843138) internal successors, (12163), 51 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:29,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 286.0) internal successors, (14872), 52 states have internal predecessors, (14872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:29,332 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 286.0) internal successors, (14872), 52 states have internal predecessors, (14872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:29,332 INFO L186 Difference]: Start difference. First operand has 1159 places, 1045 transitions, 14495 flow. Second operand 51 states and 12163 transitions. [2021-12-06 21:06:29,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1207 places, 1289 transitions, 20251 flow [2021-12-06 21:06:35,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1205 places, 1289 transitions, 19213 flow, removed 519 selfloop flow, removed 2 redundant places. [2021-12-06 21:06:35,889 INFO L242 Difference]: Finished difference. Result has 1248 places, 1142 transitions, 16267 flow [2021-12-06 21:06:35,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13941, PETRI_DIFFERENCE_MINUEND_PLACES=1155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=16267, PETRI_PLACES=1248, PETRI_TRANSITIONS=1142} [2021-12-06 21:06:35,890 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 992 predicate places. [2021-12-06 21:06:35,890 INFO L470 AbstractCegarLoop]: Abstraction has has 1248 places, 1142 transitions, 16267 flow [2021-12-06 21:06:35,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:35,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:35,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-06 21:06:35,891 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:06:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2043682932, now seen corresponding path program 5 times [2021-12-06 21:06:35,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:35,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979842584] [2021-12-06 21:06:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:35,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:35,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:35,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979842584] [2021-12-06 21:06:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979842584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:35,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:06:35,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891355682] [2021-12-06 21:06:35,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:35,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:06:35,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:06:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:06:35,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:06:35,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1248 places, 1142 transitions, 16267 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:35,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:06:35,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:56,274 INFO L129 PetriNetUnfolder]: 11573/34062 cut-off events. [2021-12-06 21:06:56,275 INFO L130 PetriNetUnfolder]: For 517066/518323 co-relation queries the response was YES. [2021-12-06 21:06:58,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192877 conditions, 34062 events. 11573/34062 cut-off events. For 517066/518323 co-relation queries the response was YES. Maximal size of possible extension queue 3094. Compared 472409 event pairs, 6234 based on Foata normal form. 33/32092 useless extension candidates. Maximal degree in co-relation 192409. Up to 17947 conditions per place. [2021-12-06 21:06:58,870 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 869 selfloop transitions, 188 changer transitions 36/1338 dead transitions. [2021-12-06 21:06:58,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1287 places, 1338 transitions, 21469 flow [2021-12-06 21:06:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 21:06:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-12-06 21:06:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 10023 transitions. [2021-12-06 21:06:58,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8344155844155844 [2021-12-06 21:06:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 10023 transitions. [2021-12-06 21:06:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 10023 transitions. [2021-12-06 21:06:58,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:58,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 10023 transitions. [2021-12-06 21:06:58,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 238.64285714285714) internal successors, (10023), 42 states have internal predecessors, (10023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:58,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 286.0) internal successors, (12298), 43 states have internal predecessors, (12298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:58,888 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 286.0) internal successors, (12298), 43 states have internal predecessors, (12298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:58,888 INFO L186 Difference]: Start difference. First operand has 1248 places, 1142 transitions, 16267 flow. Second operand 42 states and 10023 transitions. [2021-12-06 21:06:58,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1287 places, 1338 transitions, 21469 flow [2021-12-06 21:07:06,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1285 places, 1338 transitions, 20065 flow, removed 702 selfloop flow, removed 2 redundant places. [2021-12-06 21:07:06,591 INFO L242 Difference]: Finished difference. Result has 1314 places, 1202 transitions, 16776 flow [2021-12-06 21:07:06,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15169, PETRI_DIFFERENCE_MINUEND_PLACES=1244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16776, PETRI_PLACES=1314, PETRI_TRANSITIONS=1202} [2021-12-06 21:07:06,592 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1058 predicate places. [2021-12-06 21:07:06,592 INFO L470 AbstractCegarLoop]: Abstraction has has 1314 places, 1202 transitions, 16776 flow [2021-12-06 21:07:06,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:06,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:07:06,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:07:06,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-06 21:07:06,593 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:07:06,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:06,593 INFO L85 PathProgramCache]: Analyzing trace with hash -352823078, now seen corresponding path program 6 times [2021-12-06 21:07:06,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:07:06,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190142856] [2021-12-06 21:07:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:06,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:07:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:07:06,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:07:06,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190142856] [2021-12-06 21:07:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190142856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:06,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:07:06,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:07:06,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646999391] [2021-12-06 21:07:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:07:06,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:07:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:07:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:07:06,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:07:06,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1314 places, 1202 transitions, 16776 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:06,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:07:06,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:07:06,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:07:27,598 INFO L129 PetriNetUnfolder]: 11808/34327 cut-off events. [2021-12-06 21:07:27,598 INFO L130 PetriNetUnfolder]: For 503833/505090 co-relation queries the response was YES. [2021-12-06 21:07:30,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193881 conditions, 34327 events. 11808/34327 cut-off events. For 503833/505090 co-relation queries the response was YES. Maximal size of possible extension queue 3122. Compared 476102 event pairs, 5805 based on Foata normal form. 1/32337 useless extension candidates. Maximal degree in co-relation 193385. Up to 17707 conditions per place. [2021-12-06 21:07:30,242 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 933 selfloop transitions, 222 changer transitions 22/1422 dead transitions. [2021-12-06 21:07:30,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1337 places, 1422 transitions, 22434 flow [2021-12-06 21:07:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 21:07:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 21:07:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6242 transitions. [2021-12-06 21:07:30,245 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8394298009682625 [2021-12-06 21:07:30,245 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6242 transitions. [2021-12-06 21:07:30,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6242 transitions. [2021-12-06 21:07:30,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:07:30,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6242 transitions. [2021-12-06 21:07:30,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 240.07692307692307) internal successors, (6242), 26 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:30,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 286.0) internal successors, (7722), 27 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:30,253 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 286.0) internal successors, (7722), 27 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:30,253 INFO L186 Difference]: Start difference. First operand has 1314 places, 1202 transitions, 16776 flow. Second operand 26 states and 6242 transitions. [2021-12-06 21:07:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1337 places, 1422 transitions, 22434 flow [2021-12-06 21:07:37,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1334 places, 1422 transitions, 21925 flow, removed 226 selfloop flow, removed 3 redundant places. [2021-12-06 21:07:37,749 INFO L242 Difference]: Finished difference. Result has 1351 places, 1240 transitions, 17611 flow [2021-12-06 21:07:37,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=16295, PETRI_DIFFERENCE_MINUEND_PLACES=1309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1004, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=17611, PETRI_PLACES=1351, PETRI_TRANSITIONS=1240} [2021-12-06 21:07:37,750 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1095 predicate places. [2021-12-06 21:07:37,750 INFO L470 AbstractCegarLoop]: Abstraction has has 1351 places, 1240 transitions, 17611 flow [2021-12-06 21:07:37,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:37,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:07:37,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:07:37,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-06 21:07:37,751 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:07:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash 619421942, now seen corresponding path program 7 times [2021-12-06 21:07:37,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:07:37,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290406533] [2021-12-06 21:07:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:37,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:07:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:07:37,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:07:37,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290406533] [2021-12-06 21:07:37,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290406533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:37,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:07:37,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:07:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758580495] [2021-12-06 21:07:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:37,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:07:37,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:07:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:07:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:07:37,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:07:37,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1351 places, 1240 transitions, 17611 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:37,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:07:37,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:07:37,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:07:59,563 INFO L129 PetriNetUnfolder]: 12047/35533 cut-off events. [2021-12-06 21:07:59,564 INFO L130 PetriNetUnfolder]: For 550091/551405 co-relation queries the response was YES. [2021-12-06 21:08:02,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204088 conditions, 35533 events. 12047/35533 cut-off events. For 550091/551405 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 495913 event pairs, 5960 based on Foata normal form. 70/33605 useless extension candidates. Maximal degree in co-relation 203577. Up to 18123 conditions per place. [2021-12-06 21:08:02,499 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 947 selfloop transitions, 246 changer transitions 18/1456 dead transitions. [2021-12-06 21:08:02,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1374 places, 1456 transitions, 23655 flow [2021-12-06 21:08:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 21:08:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 21:08:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6241 transitions. [2021-12-06 21:08:02,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8392953200645509 [2021-12-06 21:08:02,503 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6241 transitions. [2021-12-06 21:08:02,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6241 transitions. [2021-12-06 21:08:02,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:08:02,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6241 transitions. [2021-12-06 21:08:02,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 240.03846153846155) internal successors, (6241), 26 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 286.0) internal successors, (7722), 27 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,511 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 286.0) internal successors, (7722), 27 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:02,511 INFO L186 Difference]: Start difference. First operand has 1351 places, 1240 transitions, 17611 flow. Second operand 26 states and 6241 transitions. [2021-12-06 21:08:02,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1374 places, 1456 transitions, 23655 flow [2021-12-06 21:08:10,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1371 places, 1456 transitions, 23023 flow, removed 286 selfloop flow, removed 3 redundant places. [2021-12-06 21:08:10,367 INFO L242 Difference]: Finished difference. Result has 1387 places, 1282 transitions, 18711 flow [2021-12-06 21:08:10,368 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=17156, PETRI_DIFFERENCE_MINUEND_PLACES=1346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=18711, PETRI_PLACES=1387, PETRI_TRANSITIONS=1282} [2021-12-06 21:08:10,368 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1131 predicate places. [2021-12-06 21:08:10,368 INFO L470 AbstractCegarLoop]: Abstraction has has 1387 places, 1282 transitions, 18711 flow [2021-12-06 21:08:10,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:10,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:08:10,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:08:10,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-06 21:08:10,369 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:08:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash -180174622, now seen corresponding path program 8 times [2021-12-06 21:08:10,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:10,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451742125] [2021-12-06 21:08:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:10,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:08:10,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:10,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451742125] [2021-12-06 21:08:10,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451742125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:10,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:10,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:08:10,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160890059] [2021-12-06 21:08:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:10,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:08:10,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:08:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:08:10,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:08:10,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1387 places, 1282 transitions, 18711 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:10,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:08:10,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:08:10,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:08:34,117 INFO L129 PetriNetUnfolder]: 12352/36490 cut-off events. [2021-12-06 21:08:34,118 INFO L130 PetriNetUnfolder]: For 588668/590008 co-relation queries the response was YES. [2021-12-06 21:08:37,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213596 conditions, 36490 events. 12352/36490 cut-off events. For 588668/590008 co-relation queries the response was YES. Maximal size of possible extension queue 3283. Compared 510457 event pairs, 6474 based on Foata normal form. 53/34518 useless extension candidates. Maximal degree in co-relation 213071. Up to 18203 conditions per place. [2021-12-06 21:08:37,377 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 974 selfloop transitions, 210 changer transitions 22/1451 dead transitions. [2021-12-06 21:08:37,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1413 places, 1451 transitions, 24043 flow [2021-12-06 21:08:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 21:08:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-06 21:08:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6956 transitions. [2021-12-06 21:08:37,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386785628164939 [2021-12-06 21:08:37,381 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6956 transitions. [2021-12-06 21:08:37,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6956 transitions. [2021-12-06 21:08:37,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:08:37,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6956 transitions. [2021-12-06 21:08:37,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 239.86206896551724) internal successors, (6956), 29 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:37,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 286.0) internal successors, (8580), 30 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:37,389 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 286.0) internal successors, (8580), 30 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:37,389 INFO L186 Difference]: Start difference. First operand has 1387 places, 1282 transitions, 18711 flow. Second operand 29 states and 6956 transitions. [2021-12-06 21:08:37,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1413 places, 1451 transitions, 24043 flow [2021-12-06 21:08:46,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1410 places, 1451 transitions, 23516 flow, removed 241 selfloop flow, removed 3 redundant places. [2021-12-06 21:08:46,108 INFO L242 Difference]: Finished difference. Result has 1424 places, 1329 transitions, 19837 flow [2021-12-06 21:08:46,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=18230, PETRI_DIFFERENCE_MINUEND_PLACES=1382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19837, PETRI_PLACES=1424, PETRI_TRANSITIONS=1329} [2021-12-06 21:08:46,109 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1168 predicate places. [2021-12-06 21:08:46,109 INFO L470 AbstractCegarLoop]: Abstraction has has 1424 places, 1329 transitions, 19837 flow [2021-12-06 21:08:46,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:46,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:08:46,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:08:46,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-06 21:08:46,110 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:08:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1216396218, now seen corresponding path program 9 times [2021-12-06 21:08:46,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:46,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224011310] [2021-12-06 21:08:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:46,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:08:46,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224011310] [2021-12-06 21:08:46,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224011310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:46,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:46,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:08:46,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029685645] [2021-12-06 21:08:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:46,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:08:46,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:08:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:08:46,185 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:08:46,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1424 places, 1329 transitions, 19837 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:46,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:08:46,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:08:46,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:09:10,288 INFO L129 PetriNetUnfolder]: 12722/37257 cut-off events. [2021-12-06 21:09:10,288 INFO L130 PetriNetUnfolder]: For 639756/641077 co-relation queries the response was YES. [2021-12-06 21:09:13,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225814 conditions, 37257 events. 12722/37257 cut-off events. For 639756/641077 co-relation queries the response was YES. Maximal size of possible extension queue 3376. Compared 521919 event pairs, 6180 based on Foata normal form. 59/35310 useless extension candidates. Maximal degree in co-relation 225277. Up to 18299 conditions per place. [2021-12-06 21:09:13,752 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 1010 selfloop transitions, 266 changer transitions 27/1548 dead transitions. [2021-12-06 21:09:13,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1455 places, 1548 transitions, 26683 flow [2021-12-06 21:09:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 21:09:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-12-06 21:09:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8132 transitions. [2021-12-06 21:09:13,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8362813656931304 [2021-12-06 21:09:13,756 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8132 transitions. [2021-12-06 21:09:13,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8132 transitions. [2021-12-06 21:09:13,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:09:13,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8132 transitions. [2021-12-06 21:09:13,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 239.1764705882353) internal successors, (8132), 34 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:13,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:13,766 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:13,766 INFO L186 Difference]: Start difference. First operand has 1424 places, 1329 transitions, 19837 flow. Second operand 34 states and 8132 transitions. [2021-12-06 21:09:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1455 places, 1548 transitions, 26683 flow [2021-12-06 21:09:23,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1453 places, 1548 transitions, 26191 flow, removed 246 selfloop flow, removed 2 redundant places. [2021-12-06 21:09:23,252 INFO L242 Difference]: Finished difference. Result has 1476 places, 1398 transitions, 22128 flow [2021-12-06 21:09:23,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19415, PETRI_DIFFERENCE_MINUEND_PLACES=1420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22128, PETRI_PLACES=1476, PETRI_TRANSITIONS=1398} [2021-12-06 21:09:23,253 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1220 predicate places. [2021-12-06 21:09:23,253 INFO L470 AbstractCegarLoop]: Abstraction has has 1476 places, 1398 transitions, 22128 flow [2021-12-06 21:09:23,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:23,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:09:23,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:23,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-06 21:09:23,254 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:09:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2077440972, now seen corresponding path program 10 times [2021-12-06 21:09:23,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:23,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666242558] [2021-12-06 21:09:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:23,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:09:23,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:23,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666242558] [2021-12-06 21:09:23,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666242558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:23,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:09:23,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:09:23,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96353894] [2021-12-06 21:09:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:23,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:09:23,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:09:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:09:23,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:09:23,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1476 places, 1398 transitions, 22128 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:23,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:09:23,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:09:23,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:09:49,580 INFO L129 PetriNetUnfolder]: 12947/38329 cut-off events. [2021-12-06 21:09:49,580 INFO L130 PetriNetUnfolder]: For 724003/725370 co-relation queries the response was YES. [2021-12-06 21:09:53,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237723 conditions, 38329 events. 12947/38329 cut-off events. For 724003/725370 co-relation queries the response was YES. Maximal size of possible extension queue 3464. Compared 541722 event pairs, 6315 based on Foata normal form. 1/36330 useless extension candidates. Maximal degree in co-relation 237164. Up to 18069 conditions per place. [2021-12-06 21:09:53,402 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 1139 selfloop transitions, 199 changer transitions 52/1635 dead transitions. [2021-12-06 21:09:53,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1523 places, 1635 transitions, 29110 flow [2021-12-06 21:09:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-06 21:09:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-12-06 21:09:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 11921 transitions. [2021-12-06 21:09:53,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8336363636363636 [2021-12-06 21:09:53,408 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 11921 transitions. [2021-12-06 21:09:53,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 11921 transitions. [2021-12-06 21:09:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:09:53,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 11921 transitions. [2021-12-06 21:09:53,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 238.42) internal successors, (11921), 50 states have internal predecessors, (11921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:53,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 286.0) internal successors, (14586), 51 states have internal predecessors, (14586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:53,424 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 286.0) internal successors, (14586), 51 states have internal predecessors, (14586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:53,424 INFO L186 Difference]: Start difference. First operand has 1476 places, 1398 transitions, 22128 flow. Second operand 50 states and 11921 transitions. [2021-12-06 21:09:53,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1523 places, 1635 transitions, 29110 flow [2021-12-06 21:10:05,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1520 places, 1635 transitions, 28125 flow, removed 464 selfloop flow, removed 3 redundant places. [2021-12-06 21:10:05,188 INFO L242 Difference]: Finished difference. Result has 1563 places, 1492 transitions, 24288 flow [2021-12-06 21:10:05,189 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=21155, PETRI_DIFFERENCE_MINUEND_PLACES=1471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=24288, PETRI_PLACES=1563, PETRI_TRANSITIONS=1492} [2021-12-06 21:10:05,189 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1307 predicate places. [2021-12-06 21:10:05,189 INFO L470 AbstractCegarLoop]: Abstraction has has 1563 places, 1492 transitions, 24288 flow [2021-12-06 21:10:05,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:05,189 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:10:05,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:05,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-06 21:10:05,190 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:10:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash 712138196, now seen corresponding path program 11 times [2021-12-06 21:10:05,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:05,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582325088] [2021-12-06 21:10:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:05,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:10:05,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:05,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582325088] [2021-12-06 21:10:05,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582325088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:05,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:05,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:10:05,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713576284] [2021-12-06 21:10:05,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:05,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:10:05,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:10:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:10:05,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:10:05,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1563 places, 1492 transitions, 24288 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:05,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:10:05,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:10:05,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:10:34,725 INFO L129 PetriNetUnfolder]: 13346/39718 cut-off events. [2021-12-06 21:10:34,725 INFO L130 PetriNetUnfolder]: For 833498/834942 co-relation queries the response was YES. [2021-12-06 21:10:38,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254162 conditions, 39718 events. 13346/39718 cut-off events. For 833498/834942 co-relation queries the response was YES. Maximal size of possible extension queue 3541. Compared 564132 event pairs, 6062 based on Foata normal form. 110/37824 useless extension candidates. Maximal degree in co-relation 253562. Up to 18516 conditions per place. [2021-12-06 21:10:39,009 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 1094 selfloop transitions, 417 changer transitions 56/1812 dead transitions. [2021-12-06 21:10:39,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1614 places, 1812 transitions, 33012 flow [2021-12-06 21:10:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 21:10:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-12-06 21:10:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 12868 transitions. [2021-12-06 21:10:39,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8332038332038332 [2021-12-06 21:10:39,015 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 12868 transitions. [2021-12-06 21:10:39,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 12868 transitions. [2021-12-06 21:10:39,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:10:39,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 12868 transitions. [2021-12-06 21:10:39,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 238.2962962962963) internal successors, (12868), 54 states have internal predecessors, (12868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:39,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 286.0) internal successors, (15730), 55 states have internal predecessors, (15730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:39,031 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 286.0) internal successors, (15730), 55 states have internal predecessors, (15730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:39,031 INFO L186 Difference]: Start difference. First operand has 1563 places, 1492 transitions, 24288 flow. Second operand 54 states and 12868 transitions. [2021-12-06 21:10:39,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1614 places, 1812 transitions, 33012 flow [2021-12-06 21:10:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1612 places, 1812 transitions, 31670 flow, removed 671 selfloop flow, removed 2 redundant places. [2021-12-06 21:10:53,926 INFO L242 Difference]: Finished difference. Result has 1652 places, 1587 transitions, 26174 flow [2021-12-06 21:10:53,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=22960, PETRI_DIFFERENCE_MINUEND_PLACES=1559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=26174, PETRI_PLACES=1652, PETRI_TRANSITIONS=1587} [2021-12-06 21:10:53,927 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1396 predicate places. [2021-12-06 21:10:53,928 INFO L470 AbstractCegarLoop]: Abstraction has has 1652 places, 1587 transitions, 26174 flow [2021-12-06 21:10:53,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:53,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:10:53,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:53,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-06 21:10:53,928 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:10:53,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash -898780910, now seen corresponding path program 12 times [2021-12-06 21:10:53,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:53,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128153640] [2021-12-06 21:10:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:53,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:10:54,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:54,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128153640] [2021-12-06 21:10:54,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128153640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:54,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:10:54,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:10:54,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936929358] [2021-12-06 21:10:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:54,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:10:54,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:10:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:10:54,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:10:54,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1652 places, 1587 transitions, 26174 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:54,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:10:54,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:10:54,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:11:24,447 INFO L129 PetriNetUnfolder]: 13707/40488 cut-off events. [2021-12-06 21:11:24,447 INFO L130 PetriNetUnfolder]: For 847764/849204 co-relation queries the response was YES. [2021-12-06 21:11:28,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263353 conditions, 40488 events. 13707/40488 cut-off events. For 847764/849204 co-relation queries the response was YES. Maximal size of possible extension queue 3606. Compared 574473 event pairs, 6574 based on Foata normal form. 58/38522 useless extension candidates. Maximal degree in co-relation 262714. Up to 18807 conditions per place. [2021-12-06 21:11:29,134 INFO L132 encePairwiseOnDemand]: 265/286 looper letters, 1191 selfloop transitions, 299 changer transitions 22/1757 dead transitions. [2021-12-06 21:11:29,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1678 places, 1757 transitions, 32706 flow [2021-12-06 21:11:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 21:11:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-06 21:11:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6958 transitions. [2021-12-06 21:11:29,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8389197009886665 [2021-12-06 21:11:29,137 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6958 transitions. [2021-12-06 21:11:29,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6958 transitions. [2021-12-06 21:11:29,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:11:29,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6958 transitions. [2021-12-06 21:11:29,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 239.93103448275863) internal successors, (6958), 29 states have internal predecessors, (6958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:11:29,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 286.0) internal successors, (8580), 30 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:11:29,145 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 286.0) internal successors, (8580), 30 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:11:29,145 INFO L186 Difference]: Start difference. First operand has 1652 places, 1587 transitions, 26174 flow. Second operand 29 states and 6958 transitions. [2021-12-06 21:11:29,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1678 places, 1757 transitions, 32706 flow [2021-12-06 21:11:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1675 places, 1757 transitions, 32048 flow, removed 327 selfloop flow, removed 3 redundant places. [2021-12-06 21:11:44,871 INFO L242 Difference]: Finished difference. Result has 1687 places, 1642 transitions, 27727 flow [2021-12-06 21:11:44,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=25529, PETRI_DIFFERENCE_MINUEND_PLACES=1647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=27727, PETRI_PLACES=1687, PETRI_TRANSITIONS=1642} [2021-12-06 21:11:44,872 INFO L334 CegarLoopForPetriNet]: 256 programPoint places, 1431 predicate places. [2021-12-06 21:11:44,872 INFO L470 AbstractCegarLoop]: Abstraction has has 1687 places, 1642 transitions, 27727 flow [2021-12-06 21:11:44,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:11:44,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:11:44,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:11:44,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-06 21:11:44,873 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 21:11:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:11:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 35064310, now seen corresponding path program 13 times [2021-12-06 21:11:44,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:11:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236627646] [2021-12-06 21:11:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:44,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:11:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:11:44,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:11:44,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236627646] [2021-12-06 21:11:44,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236627646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:11:44,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:11:44,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:11:44,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498701329] [2021-12-06 21:11:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:11:44,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:11:44,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:11:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:11:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:11:44,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2021-12-06 21:11:44,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1687 places, 1642 transitions, 27727 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:11:44,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:11:44,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2021-12-06 21:11:44,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand