./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN --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 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:33:40,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:33:40,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:33:40,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:33:40,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:33:40,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:33:40,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:33:40,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:33:40,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:33:40,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:33:40,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:33:40,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:33:40,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:33:40,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:33:40,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:33:40,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:33:40,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:33:40,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:33:40,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:33:40,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:33:40,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:33:40,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:33:40,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:33:40,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:33:40,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:33:40,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:33:40,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:33:40,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:33:40,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:33:40,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:33:40,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:33:40,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:33:40,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:33:40,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:33:40,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:33:40,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:33:40,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:33:40,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:33:40,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:33:40,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:33:40,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:33:40,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:33:40,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:33:40,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:33:40,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:33:40,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:33:40,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:33:40,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:33:40,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:33:40,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:33:40,727 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:33:40,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:33:40,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:33:40,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:33:40,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:33:40,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:33:40,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:33:40,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:33:40,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:33:40,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:33:40,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:33:40,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:33:40,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:33:40,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:33:40,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:33:40,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:33:40,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:33:40,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:33:40,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:33:40,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:33:40,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:33:40,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:33:40,741 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:33:40,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:33:40,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:33:40,742 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_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-20 12:33:41,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:33:41,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:33:41,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:33:41,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:33:41,123 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:33:41,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-20 12:33:44,398 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:33:44,609 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:33:44,610 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-20 12:33:44,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/data/eae55db2c/edd30f8c956a4706b2bbb0b2b8b8f785/FLAGb15f16487 [2022-11-20 12:33:44,633 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/data/eae55db2c/edd30f8c956a4706b2bbb0b2b8b8f785 [2022-11-20 12:33:44,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:33:44,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:33:44,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:44,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:33:44,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:33:44,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:44,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6944bff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44, skipping insertion in model container [2022-11-20 12:33:44,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:44,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:33:44,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:33:44,872 WARN L237 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_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-20 12:33:44,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:44,893 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:33:44,918 WARN L237 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_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-20 12:33:44,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:44,946 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:33:44,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44 WrapperNode [2022-11-20 12:33:44,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:44,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:33:44,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:33:44,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:33:44,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:44,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:44,994 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 163 [2022-11-20 12:33:44,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:33:44,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:33:44,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:33:44,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:33:45,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:33:45,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:33:45,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:33:45,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:33:45,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (1/1) ... [2022-11-20 12:33:45,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:33:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:45,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:33:45,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65082ff7-09b0-4e30-bf0b-e6d4eda253ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:33:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:33:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:33:45,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:33:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:33:45,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:33:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:33:45,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:33:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:33:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:33:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:33:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:33:45,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:33:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:33:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:33:45,138 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:33:45,339 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:33:45,341 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:33:45,834 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:33:45,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:33:45,846 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:33:45,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:33:45 BoogieIcfgContainer [2022-11-20 12:33:45,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:33:45,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:33:45,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:33:45,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:33:45,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:33:44" (1/3) ... [2022-11-20 12:33:45,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffc8f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:33:45, skipping insertion in model container [2022-11-20 12:33:45,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:44" (2/3) ... [2022-11-20 12:33:45,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffc8f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:33:45, skipping insertion in model container [2022-11-20 12:33:45,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:33:45" (3/3) ... [2022-11-20 12:33:45,878 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-20 12:33:45,889 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:33:45,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:33:45,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:33:45,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:33:46,160 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:33:46,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 212 transitions, 448 flow [2022-11-20 12:33:46,436 INFO L130 PetriNetUnfolder]: 13/209 cut-off events. [2022-11-20 12:33:46,441 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:33:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 13/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 424 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-11-20 12:33:46,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 212 transitions, 448 flow [2022-11-20 12:33:46,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 198 transitions, 414 flow [2022-11-20 12:33:46,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:33:46,494 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bb41ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:33:46,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:33:46,596 INFO L130 PetriNetUnfolder]: 13/197 cut-off events. [2022-11-20 12:33:46,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:33:46,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:46,598 INFO L209 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] [2022-11-20 12:33:46,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1058280500, now seen corresponding path program 1 times [2022-11-20 12:33:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:46,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096541496] [2022-11-20 12:33:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:47,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096541496] [2022-11-20 12:33:47,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096541496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:47,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:47,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999862218] [2022-11-20 12:33:47,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:47,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-20 12:33:47,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:47,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:47,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-20 12:33:47,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:48,507 INFO L130 PetriNetUnfolder]: 127/1374 cut-off events. [2022-11-20 12:33:48,508 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-20 12:33:48,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 1374 events. 127/1374 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11328 event pairs, 14 based on Foata normal form. 83/1315 useless extension candidates. Maximal degree in co-relation 1485. Up to 44 conditions per place. [2022-11-20 12:33:48,529 INFO L137 encePairwiseOnDemand]: 192/212 looper letters, 50 selfloop transitions, 17 changer transitions 11/247 dead transitions. [2022-11-20 12:33:48,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 247 transitions, 731 flow [2022-11-20 12:33:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:33:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:33:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2475 transitions. [2022-11-20 12:33:48,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8980406386066764 [2022-11-20 12:33:48,560 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2475 transitions. [2022-11-20 12:33:48,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2475 transitions. [2022-11-20 12:33:48,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:48,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2475 transitions. [2022-11-20 12:33:48,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.3846153846154) internal successors, (2475), 13 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:48,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:48,599 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:48,601 INFO L175 Difference]: Start difference. First operand has 195 places, 198 transitions, 414 flow. Second operand 13 states and 2475 transitions. [2022-11-20 12:33:48,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 247 transitions, 731 flow [2022-11-20 12:33:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 247 transitions, 677 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:33:48,614 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 501 flow [2022-11-20 12:33:48,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=501, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2022-11-20 12:33:48,621 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 13 predicate places. [2022-11-20 12:33:48,621 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 501 flow [2022-11-20 12:33:48,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:48,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:48,623 INFO L209 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] [2022-11-20 12:33:48,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:33:48,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash -510055688, now seen corresponding path program 2 times [2022-11-20 12:33:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:48,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378837825] [2022-11-20 12:33:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:48,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378837825] [2022-11-20 12:33:49,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378837825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:49,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:49,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274715408] [2022-11-20 12:33:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:49,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-20 12:33:49,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:49,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:49,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-20 12:33:49,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:49,581 INFO L130 PetriNetUnfolder]: 97/1032 cut-off events. [2022-11-20 12:33:49,581 INFO L131 PetriNetUnfolder]: For 204/210 co-relation queries the response was YES. [2022-11-20 12:33:49,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 1032 events. 97/1032 cut-off events. For 204/210 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7908 event pairs, 13 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 1510. Up to 68 conditions per place. [2022-11-20 12:33:49,595 INFO L137 encePairwiseOnDemand]: 199/212 looper letters, 48 selfloop transitions, 16 changer transitions 4/237 dead transitions. [2022-11-20 12:33:49,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 764 flow [2022-11-20 12:33:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:33:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:33:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1512 transitions. [2022-11-20 12:33:49,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8915094339622641 [2022-11-20 12:33:49,600 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1512 transitions. [2022-11-20 12:33:49,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1512 transitions. [2022-11-20 12:33:49,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:49,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1512 transitions. [2022-11-20 12:33:49,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:49,614 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:49,614 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 501 flow. Second operand 8 states and 1512 transitions. [2022-11-20 12:33:49,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 764 flow [2022-11-20 12:33:49,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 237 transitions, 754 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-20 12:33:49,636 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 625 flow [2022-11-20 12:33:49,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=625, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2022-11-20 12:33:49,637 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 19 predicate places. [2022-11-20 12:33:49,638 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 625 flow [2022-11-20 12:33:49,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:49,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:49,640 INFO L209 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] [2022-11-20 12:33:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:33:49,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 644824466, now seen corresponding path program 3 times [2022-11-20 12:33:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:49,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936675163] [2022-11-20 12:33:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936675163] [2022-11-20 12:33:50,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936675163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:50,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:50,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037451264] [2022-11-20 12:33:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:50,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:50,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-20 12:33:50,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:50,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-20 12:33:50,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:50,559 INFO L130 PetriNetUnfolder]: 126/1590 cut-off events. [2022-11-20 12:33:50,583 INFO L131 PetriNetUnfolder]: For 523/537 co-relation queries the response was YES. [2022-11-20 12:33:50,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1590 events. 126/1590 cut-off events. For 523/537 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13367 event pairs, 24 based on Foata normal form. 1/1469 useless extension candidates. Maximal degree in co-relation 2215. Up to 99 conditions per place. [2022-11-20 12:33:50,616 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 44 selfloop transitions, 20 changer transitions 6/239 dead transitions. [2022-11-20 12:33:50,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 239 transitions, 875 flow [2022-11-20 12:33:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:33:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:33:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1696 transitions. [2022-11-20 12:33:50,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-20 12:33:50,623 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1696 transitions. [2022-11-20 12:33:50,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1696 transitions. [2022-11-20 12:33:50,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:50,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1696 transitions. [2022-11-20 12:33:50,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.44444444444446) internal successors, (1696), 9 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,639 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,639 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 625 flow. Second operand 9 states and 1696 transitions. [2022-11-20 12:33:50,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 239 transitions, 875 flow [2022-11-20 12:33:50,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 239 transitions, 849 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-20 12:33:50,652 INFO L231 Difference]: Finished difference. Result has 221 places, 215 transitions, 690 flow [2022-11-20 12:33:50,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=221, PETRI_TRANSITIONS=215} [2022-11-20 12:33:50,655 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 26 predicate places. [2022-11-20 12:33:50,656 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 215 transitions, 690 flow [2022-11-20 12:33:50,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:50,657 INFO L209 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] [2022-11-20 12:33:50,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:33:50,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 229963557, now seen corresponding path program 1 times [2022-11-20 12:33:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:50,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729549908] [2022-11-20 12:33:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:50,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729549908] [2022-11-20 12:33:50,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729549908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:50,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:50,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:33:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842241831] [2022-11-20 12:33:50,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:50,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:33:50,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:33:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:33:50,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-20 12:33:50,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 215 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 183.5) internal successors, (1468), 8 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:50,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:50,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-20 12:33:50,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:51,701 INFO L130 PetriNetUnfolder]: 589/2977 cut-off events. [2022-11-20 12:33:51,701 INFO L131 PetriNetUnfolder]: For 2229/2526 co-relation queries the response was YES. [2022-11-20 12:33:51,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 2977 events. 589/2977 cut-off events. For 2229/2526 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27966 event pairs, 314 based on Foata normal form. 101/2855 useless extension candidates. Maximal degree in co-relation 5194. Up to 695 conditions per place. [2022-11-20 12:33:51,816 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 45 selfloop transitions, 7 changer transitions 14/254 dead transitions. [2022-11-20 12:33:51,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 254 transitions, 1070 flow [2022-11-20 12:33:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:33:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:33:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1862 transitions. [2022-11-20 12:33:51,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783018867924528 [2022-11-20 12:33:51,822 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1862 transitions. [2022-11-20 12:33:51,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1862 transitions. [2022-11-20 12:33:51,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:51,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1862 transitions. [2022-11-20 12:33:51,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.2) internal successors, (1862), 10 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:51,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:51,868 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:51,868 INFO L175 Difference]: Start difference. First operand has 221 places, 215 transitions, 690 flow. Second operand 10 states and 1862 transitions. [2022-11-20 12:33:51,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 254 transitions, 1070 flow [2022-11-20 12:33:51,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 254 transitions, 1055 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 12:33:51,882 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 724 flow [2022-11-20 12:33:51,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=724, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2022-11-20 12:33:51,893 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 37 predicate places. [2022-11-20 12:33:51,896 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 724 flow [2022-11-20 12:33:51,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 183.5) internal successors, (1468), 8 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:51,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:51,898 INFO L209 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] [2022-11-20 12:33:51,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:33:51,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash 693441621, now seen corresponding path program 1 times [2022-11-20 12:33:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394372513] [2022-11-20 12:33:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:51,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:51,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394372513] [2022-11-20 12:33:51,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394372513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:51,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:51,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:51,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487659503] [2022-11-20 12:33:51,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:51,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:33:51,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:33:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:33:52,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 212 [2022-11-20 12:33:52,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:52,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 212 [2022-11-20 12:33:52,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:52,530 INFO L130 PetriNetUnfolder]: 99/2266 cut-off events. [2022-11-20 12:33:52,531 INFO L131 PetriNetUnfolder]: For 612/675 co-relation queries the response was YES. [2022-11-20 12:33:52,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 2266 events. 99/2266 cut-off events. For 612/675 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20023 event pairs, 23 based on Foata normal form. 1/2104 useless extension candidates. Maximal degree in co-relation 3176. Up to 99 conditions per place. [2022-11-20 12:33:52,552 INFO L137 encePairwiseOnDemand]: 208/212 looper letters, 17 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2022-11-20 12:33:52,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 781 flow [2022-11-20 12:33:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:33:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:33:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-20 12:33:52,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386792452830188 [2022-11-20 12:33:52,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-20 12:33:52,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-20 12:33:52,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:52,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-20 12:33:52,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,560 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 724 flow. Second operand 3 states and 597 transitions. [2022-11-20 12:33:52,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 781 flow [2022-11-20 12:33:52,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 226 transitions, 772 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:33:52,574 INFO L231 Difference]: Finished difference. Result has 230 places, 221 transitions, 735 flow [2022-11-20 12:33:52,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=735, PETRI_PLACES=230, PETRI_TRANSITIONS=221} [2022-11-20 12:33:52,575 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 35 predicate places. [2022-11-20 12:33:52,576 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 221 transitions, 735 flow [2022-11-20 12:33:52,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:52,577 INFO L209 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] [2022-11-20 12:33:52,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:33:52,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:52,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2146383957, now seen corresponding path program 2 times [2022-11-20 12:33:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:52,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108899744] [2022-11-20 12:33:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:52,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108899744] [2022-11-20 12:33:52,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108899744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:52,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:52,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:33:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866660191] [2022-11-20 12:33:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:33:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:33:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:33:52,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 212 [2022-11-20 12:33:52,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 221 transitions, 735 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:52,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:52,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 212 [2022-11-20 12:33:52,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:53,184 INFO L130 PetriNetUnfolder]: 65/1785 cut-off events. [2022-11-20 12:33:53,185 INFO L131 PetriNetUnfolder]: For 513/546 co-relation queries the response was YES. [2022-11-20 12:33:53,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1785 events. 65/1785 cut-off events. For 513/546 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13939 event pairs, 26 based on Foata normal form. 12/1677 useless extension candidates. Maximal degree in co-relation 2177. Up to 62 conditions per place. [2022-11-20 12:33:53,204 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 17 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2022-11-20 12:33:53,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 228 transitions, 800 flow [2022-11-20 12:33:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:33:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:33:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-20 12:33:53,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386792452830188 [2022-11-20 12:33:53,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-20 12:33:53,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-20 12:33:53,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:53,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-20 12:33:53,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,212 INFO L175 Difference]: Start difference. First operand has 230 places, 221 transitions, 735 flow. Second operand 3 states and 597 transitions. [2022-11-20 12:33:53,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 228 transitions, 800 flow [2022-11-20 12:33:53,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 228 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:33:53,222 INFO L231 Difference]: Finished difference. Result has 233 places, 223 transitions, 765 flow [2022-11-20 12:33:53,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=233, PETRI_TRANSITIONS=223} [2022-11-20 12:33:53,224 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 38 predicate places. [2022-11-20 12:33:53,224 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 223 transitions, 765 flow [2022-11-20 12:33:53,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:53,225 INFO L209 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] [2022-11-20 12:33:53,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:33:53,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1633305316, now seen corresponding path program 1 times [2022-11-20 12:33:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:53,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169629804] [2022-11-20 12:33:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:53,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:53,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:53,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169629804] [2022-11-20 12:33:53,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169629804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:53,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:53,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344462290] [2022-11-20 12:33:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:53,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:53,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 212 [2022-11-20 12:33:53,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 223 transitions, 765 flow. Second operand has 7 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:53,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 212 [2022-11-20 12:33:53,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:53,859 INFO L130 PetriNetUnfolder]: 73/1355 cut-off events. [2022-11-20 12:33:53,859 INFO L131 PetriNetUnfolder]: For 553/622 co-relation queries the response was YES. [2022-11-20 12:33:53,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 1355 events. 73/1355 cut-off events. For 553/622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10542 event pairs, 36 based on Foata normal form. 8/1275 useless extension candidates. Maximal degree in co-relation 2020. Up to 161 conditions per place. [2022-11-20 12:33:53,873 INFO L137 encePairwiseOnDemand]: 204/212 looper letters, 23 selfloop transitions, 1 changer transitions 25/243 dead transitions. [2022-11-20 12:33:53,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 942 flow [2022-11-20 12:33:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:33:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:33:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1704 transitions. [2022-11-20 12:33:53,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8930817610062893 [2022-11-20 12:33:53,879 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1704 transitions. [2022-11-20 12:33:53,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1704 transitions. [2022-11-20 12:33:53,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:53,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1704 transitions. [2022-11-20 12:33:53,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.33333333333334) internal successors, (1704), 9 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,892 INFO L175 Difference]: Start difference. First operand has 233 places, 223 transitions, 765 flow. Second operand 9 states and 1704 transitions. [2022-11-20 12:33:53,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 942 flow [2022-11-20 12:33:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 243 transitions, 930 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 12:33:53,906 INFO L231 Difference]: Finished difference. Result has 246 places, 218 transitions, 726 flow [2022-11-20 12:33:53,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=726, PETRI_PLACES=246, PETRI_TRANSITIONS=218} [2022-11-20 12:33:53,908 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 51 predicate places. [2022-11-20 12:33:53,908 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 218 transitions, 726 flow [2022-11-20 12:33:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:53,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:53,909 INFO L209 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] [2022-11-20 12:33:53,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:33:53,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 782358272, now seen corresponding path program 1 times [2022-11-20 12:33:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:53,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656482690] [2022-11-20 12:33:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656482690] [2022-11-20 12:33:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656482690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016860659] [2022-11-20 12:33:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:54,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-20 12:33:54,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 218 transitions, 726 flow. Second operand has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:54,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:54,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-20 12:33:54,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:55,460 INFO L130 PetriNetUnfolder]: 412/5060 cut-off events. [2022-11-20 12:33:55,460 INFO L131 PetriNetUnfolder]: For 501/552 co-relation queries the response was YES. [2022-11-20 12:33:55,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6835 conditions, 5060 events. 412/5060 cut-off events. For 501/552 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 55983 event pairs, 191 based on Foata normal form. 4/4591 useless extension candidates. Maximal degree in co-relation 6801. Up to 437 conditions per place. [2022-11-20 12:33:55,515 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 34 selfloop transitions, 5 changer transitions 13/245 dead transitions. [2022-11-20 12:33:55,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 245 transitions, 911 flow [2022-11-20 12:33:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:33:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:33:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1500 transitions. [2022-11-20 12:33:55,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8844339622641509 [2022-11-20 12:33:55,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1500 transitions. [2022-11-20 12:33:55,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1500 transitions. [2022-11-20 12:33:55,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:55,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1500 transitions. [2022-11-20 12:33:55,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.5) internal successors, (1500), 8 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:55,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:55,531 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:55,532 INFO L175 Difference]: Start difference. First operand has 246 places, 218 transitions, 726 flow. Second operand 8 states and 1500 transitions. [2022-11-20 12:33:55,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 245 transitions, 911 flow [2022-11-20 12:33:55,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 245 transitions, 851 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-11-20 12:33:55,551 INFO L231 Difference]: Finished difference. Result has 242 places, 220 transitions, 705 flow [2022-11-20 12:33:55,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=242, PETRI_TRANSITIONS=220} [2022-11-20 12:33:55,555 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 47 predicate places. [2022-11-20 12:33:55,555 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 220 transitions, 705 flow [2022-11-20 12:33:55,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:55,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:55,556 INFO L209 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] [2022-11-20 12:33:55,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:33:55,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash 999993946, now seen corresponding path program 2 times [2022-11-20 12:33:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484787890] [2022-11-20 12:33:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:55,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484787890] [2022-11-20 12:33:55,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484787890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:55,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:55,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:33:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530010885] [2022-11-20 12:33:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:33:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:33:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:33:55,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 212 [2022-11-20 12:33:55,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 220 transitions, 705 flow. Second operand has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:55,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:55,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 212 [2022-11-20 12:33:55,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:57,609 INFO L130 PetriNetUnfolder]: 970/6641 cut-off events. [2022-11-20 12:33:57,609 INFO L131 PetriNetUnfolder]: For 3363/3600 co-relation queries the response was YES. [2022-11-20 12:33:57,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11342 conditions, 6641 events. 970/6641 cut-off events. For 3363/3600 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 74328 event pairs, 655 based on Foata normal form. 110/6253 useless extension candidates. Maximal degree in co-relation 11306. Up to 1399 conditions per place. [2022-11-20 12:33:57,685 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 59 selfloop transitions, 11 changer transitions 12/267 dead transitions. [2022-11-20 12:33:57,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 267 transitions, 1116 flow [2022-11-20 12:33:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:33:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:33:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1838 transitions. [2022-11-20 12:33:57,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8669811320754717 [2022-11-20 12:33:57,691 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1838 transitions. [2022-11-20 12:33:57,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1838 transitions. [2022-11-20 12:33:57,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:57,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1838 transitions. [2022-11-20 12:33:57,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.8) internal successors, (1838), 10 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,714 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,714 INFO L175 Difference]: Start difference. First operand has 242 places, 220 transitions, 705 flow. Second operand 10 states and 1838 transitions. [2022-11-20 12:33:57,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 267 transitions, 1116 flow [2022-11-20 12:33:57,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 267 transitions, 1078 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 12:33:57,896 INFO L231 Difference]: Finished difference. Result has 250 places, 225 transitions, 760 flow [2022-11-20 12:33:57,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=760, PETRI_PLACES=250, PETRI_TRANSITIONS=225} [2022-11-20 12:33:57,897 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 55 predicate places. [2022-11-20 12:33:57,897 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 225 transitions, 760 flow [2022-11-20 12:33:57,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:57,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:57,899 INFO L209 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] [2022-11-20 12:33:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:33:57,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:33:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash 573001442, now seen corresponding path program 3 times [2022-11-20 12:33:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:57,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207703834] [2022-11-20 12:33:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:33:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207703834] [2022-11-20 12:33:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207703834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:58,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:58,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920133385] [2022-11-20 12:33:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:58,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 212 [2022-11-20 12:33:58,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 225 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:58,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:58,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 212 [2022-11-20 12:33:58,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:00,407 INFO L130 PetriNetUnfolder]: 1109/7857 cut-off events. [2022-11-20 12:34:00,407 INFO L131 PetriNetUnfolder]: For 4803/5075 co-relation queries the response was YES. [2022-11-20 12:34:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14267 conditions, 7857 events. 1109/7857 cut-off events. For 4803/5075 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 91753 event pairs, 494 based on Foata normal form. 132/7432 useless extension candidates. Maximal degree in co-relation 14228. Up to 1417 conditions per place. [2022-11-20 12:34:00,486 INFO L137 encePairwiseOnDemand]: 194/212 looper letters, 49 selfloop transitions, 25 changer transitions 7/266 dead transitions. [2022-11-20 12:34:00,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 266 transitions, 1148 flow [2022-11-20 12:34:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:34:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:34:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1655 transitions. [2022-11-20 12:34:00,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674004192872118 [2022-11-20 12:34:00,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1655 transitions. [2022-11-20 12:34:00,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1655 transitions. [2022-11-20 12:34:00,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:00,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1655 transitions. [2022-11-20 12:34:00,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.88888888888889) internal successors, (1655), 9 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:00,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:00,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:00,500 INFO L175 Difference]: Start difference. First operand has 250 places, 225 transitions, 760 flow. Second operand 9 states and 1655 transitions. [2022-11-20 12:34:00,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 266 transitions, 1148 flow [2022-11-20 12:34:00,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 1130 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-20 12:34:00,540 INFO L231 Difference]: Finished difference. Result has 260 places, 241 transitions, 972 flow [2022-11-20 12:34:00,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=260, PETRI_TRANSITIONS=241} [2022-11-20 12:34:00,541 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 65 predicate places. [2022-11-20 12:34:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 241 transitions, 972 flow [2022-11-20 12:34:00,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:00,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:00,542 INFO L209 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] [2022-11-20 12:34:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:34:00,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:34:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash 612573492, now seen corresponding path program 4 times [2022-11-20 12:34:00,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:00,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478159618] [2022-11-20 12:34:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:00,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:00,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478159618] [2022-11-20 12:34:00,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478159618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:00,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:00,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305275262] [2022-11-20 12:34:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:34:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:34:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:34:00,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-20 12:34:00,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 241 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:00,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:00,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-20 12:34:00,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:02,335 INFO L130 PetriNetUnfolder]: 467/5183 cut-off events. [2022-11-20 12:34:02,335 INFO L131 PetriNetUnfolder]: For 3939/4336 co-relation queries the response was YES. [2022-11-20 12:34:02,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 5183 events. 467/5183 cut-off events. For 3939/4336 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 57841 event pairs, 256 based on Foata normal form. 7/4779 useless extension candidates. Maximal degree in co-relation 9256. Up to 826 conditions per place. [2022-11-20 12:34:02,380 INFO L137 encePairwiseOnDemand]: 205/212 looper letters, 31 selfloop transitions, 0 changer transitions 41/256 dead transitions. [2022-11-20 12:34:02,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 256 transitions, 1157 flow [2022-11-20 12:34:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1491 transitions. [2022-11-20 12:34:02,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879127358490566 [2022-11-20 12:34:02,385 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1491 transitions. [2022-11-20 12:34:02,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1491 transitions. [2022-11-20 12:34:02,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:02,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1491 transitions. [2022-11-20 12:34:02,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 186.375) internal successors, (1491), 8 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,395 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,395 INFO L175 Difference]: Start difference. First operand has 260 places, 241 transitions, 972 flow. Second operand 8 states and 1491 transitions. [2022-11-20 12:34:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 256 transitions, 1157 flow [2022-11-20 12:34:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 256 transitions, 1139 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-20 12:34:02,428 INFO L231 Difference]: Finished difference. Result has 266 places, 215 transitions, 728 flow [2022-11-20 12:34:02,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=728, PETRI_PLACES=266, PETRI_TRANSITIONS=215} [2022-11-20 12:34:02,429 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 71 predicate places. [2022-11-20 12:34:02,429 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 215 transitions, 728 flow [2022-11-20 12:34:02,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:02,430 INFO L209 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] [2022-11-20 12:34:02,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:34:02,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:34:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1094927387, now seen corresponding path program 1 times [2022-11-20 12:34:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80637911] [2022-11-20 12:34:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:02,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:02,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80637911] [2022-11-20 12:34:02,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80637911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:02,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:02,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508545851] [2022-11-20 12:34:02,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:02,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:02,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:02,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 212 [2022-11-20 12:34:02,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 215 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:02,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 212 [2022-11-20 12:34:02,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:03,003 INFO L130 PetriNetUnfolder]: 75/2162 cut-off events. [2022-11-20 12:34:03,003 INFO L131 PetriNetUnfolder]: For 1042/1151 co-relation queries the response was YES. [2022-11-20 12:34:03,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 2162 events. 75/2162 cut-off events. For 1042/1151 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 19159 event pairs, 16 based on Foata normal form. 19/2042 useless extension candidates. Maximal degree in co-relation 3347. Up to 98 conditions per place. [2022-11-20 12:34:03,133 INFO L137 encePairwiseOnDemand]: 208/212 looper letters, 16 selfloop transitions, 2 changer transitions 3/212 dead transitions. [2022-11-20 12:34:03,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 212 transitions, 734 flow [2022-11-20 12:34:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:34:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-20 12:34:03,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2022-11-20 12:34:03,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:03,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,140 INFO L175 Difference]: Start difference. First operand has 266 places, 215 transitions, 728 flow. Second operand 3 states and 592 transitions. [2022-11-20 12:34:03,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 212 transitions, 734 flow [2022-11-20 12:34:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 212 transitions, 664 flow, removed 17 selfloop flow, removed 21 redundant places. [2022-11-20 12:34:03,151 INFO L231 Difference]: Finished difference. Result has 229 places, 207 transitions, 613 flow [2022-11-20 12:34:03,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=613, PETRI_PLACES=229, PETRI_TRANSITIONS=207} [2022-11-20 12:34:03,153 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 34 predicate places. [2022-11-20 12:34:03,153 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 207 transitions, 613 flow [2022-11-20 12:34:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:03,154 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:03,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:34:03,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:34:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1128305519, now seen corresponding path program 1 times [2022-11-20 12:34:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:03,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388257187] [2022-11-20 12:34:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:03,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:03,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388257187] [2022-11-20 12:34:03,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388257187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:03,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:03,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156091626] [2022-11-20 12:34:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:03,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:03,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 212 [2022-11-20 12:34:03,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 207 transitions, 613 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:03,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 212 [2022-11-20 12:34:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:03,536 INFO L130 PetriNetUnfolder]: 84/1622 cut-off events. [2022-11-20 12:34:03,536 INFO L131 PetriNetUnfolder]: For 672/906 co-relation queries the response was YES. [2022-11-20 12:34:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1622 events. 84/1622 cut-off events. For 672/906 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12238 event pairs, 32 based on Foata normal form. 54/1578 useless extension candidates. Maximal degree in co-relation 2599. Up to 118 conditions per place. [2022-11-20 12:34:03,551 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 17 selfloop transitions, 4 changer transitions 3/210 dead transitions. [2022-11-20 12:34:03,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 210 transitions, 667 flow [2022-11-20 12:34:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:34:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-20 12:34:03,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2022-11-20 12:34:03,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:03,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-20 12:34:03,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,559 INFO L175 Difference]: Start difference. First operand has 229 places, 207 transitions, 613 flow. Second operand 3 states and 592 transitions. [2022-11-20 12:34:03,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 210 transitions, 667 flow [2022-11-20 12:34:03,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 210 transitions, 650 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-20 12:34:03,569 INFO L231 Difference]: Finished difference. Result has 227 places, 206 transitions, 615 flow [2022-11-20 12:34:03,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=227, PETRI_TRANSITIONS=206} [2022-11-20 12:34:03,571 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 32 predicate places. [2022-11-20 12:34:03,571 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 206 transitions, 615 flow [2022-11-20 12:34:03,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:03,572 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:34:03,573 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:34:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash 648384916, now seen corresponding path program 1 times [2022-11-20 12:34:03,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:03,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111515222] [2022-11-20 12:34:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:05,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111515222] [2022-11-20 12:34:05,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111515222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:05,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:05,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 12:34:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598401062] [2022-11-20 12:34:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:34:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:34:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:34:05,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 212 [2022-11-20 12:34:05,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 206 transitions, 615 flow. Second operand has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:05,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 212 [2022-11-20 12:34:05,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:39,260 INFO L130 PetriNetUnfolder]: 27233/59640 cut-off events. [2022-11-20 12:34:39,260 INFO L131 PetriNetUnfolder]: For 19800/19891 co-relation queries the response was YES. [2022-11-20 12:34:39,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120405 conditions, 59640 events. 27233/59640 cut-off events. For 19800/19891 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 635039 event pairs, 1585 based on Foata normal form. 7/57750 useless extension candidates. Maximal degree in co-relation 120382. Up to 5325 conditions per place. [2022-11-20 12:34:39,813 INFO L137 encePairwiseOnDemand]: 176/212 looper letters, 1192 selfloop transitions, 101 changer transitions 735/2155 dead transitions. [2022-11-20 12:34:39,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 2155 transitions, 10044 flow [2022-11-20 12:34:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2022-11-20 12:34:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2022-11-20 12:34:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 32438 transitions. [2022-11-20 12:34:39,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.651103974307507 [2022-11-20 12:34:39,879 INFO L72 ComplementDD]: Start complementDD. Operand 235 states and 32438 transitions. [2022-11-20 12:34:39,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 32438 transitions. [2022-11-20 12:34:39,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:39,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 235 states and 32438 transitions. [2022-11-20 12:34:39,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 236 states, 235 states have (on average 138.03404255319148) internal successors, (32438), 235 states have internal predecessors, (32438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 236 states, 236 states have (on average 212.0) internal successors, (50032), 236 states have internal predecessors, (50032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,073 INFO L81 ComplementDD]: Finished complementDD. Result has 236 states, 236 states have (on average 212.0) internal successors, (50032), 236 states have internal predecessors, (50032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,073 INFO L175 Difference]: Start difference. First operand has 227 places, 206 transitions, 615 flow. Second operand 235 states and 32438 transitions. [2022-11-20 12:34:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 2155 transitions, 10044 flow [2022-11-20 12:34:40,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 2155 transitions, 10032 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:40,461 INFO L231 Difference]: Finished difference. Result has 682 places, 294 transitions, 1972 flow [2022-11-20 12:34:40,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=235, PETRI_FLOW=1972, PETRI_PLACES=682, PETRI_TRANSITIONS=294} [2022-11-20 12:34:40,463 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 487 predicate places. [2022-11-20 12:34:40,463 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 294 transitions, 1972 flow [2022-11-20 12:34:40,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:40,465 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:40,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:34:40,465 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:34:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash 461149168, now seen corresponding path program 2 times [2022-11-20 12:34:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:40,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253406324] [2022-11-20 12:34:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253406324] [2022-11-20 12:34:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253406324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:41,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:41,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 12:34:41,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191811036] [2022-11-20 12:34:41,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:41,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:34:41,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:34:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:34:41,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 212 [2022-11-20 12:34:41,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 294 transitions, 1972 flow. Second operand has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:41,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:41,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 212 [2022-11-20 12:34:41,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand